City of Troy, MO Building Regulations

[R.O. 2006 § 500.010; Ord. No. 936, 7-21-2003; Ord. No. 936A §§ 1, 2 and 5, 6-21-2004; Ord. No. 1110 § 2(1, 2, 5), 12-21-2009; Ord. No. 1223 §2, 5-17-2016]

A certain document, three (3) copies of which are on file in the office of the Building Official of the City of Troy, being marked and designated as the International Building Code, 2015 Edition, as published by the International Code Council, be and is hereby adopted as the Building Code of the City of Troy, in the State of Missouri, for regulating and governing the conditions and maintenance of all property, buildings and structures; by providing the standards for supplied utilities and facilities and other physical things and conditions essential to ensure that structures are safe, sanitary and fit for occupation and use; and the condemnation of buildings and structures unfit for human occupancy and use and the demolition of such structures as herein provided; providing for the issuance of permits and collection of fees therefor; and each and all of the regulations, provisions, penalties, conditions and terms of said Building Code on file in the office of the Building Official, City of Troy, are hereby referred to, adopted, and made a part hereof, as if fully set out in this legislation, with the additions, insertions, deletions and changes, if any, prescribed in Subsection (B) of Section 500.010.

The following sections of the International Building Code (2015) are hereby revised:

In Section 101.1, insert "City of Troy" into [NAME OF JURISDICTION].

SECTION 423 STORM SHELTERS

423.1.1 Scope. This Section applies to the construction of storm shelters constructed as separate detached buildings or constructed as safe rooms, rooms or spaces within buildings for the purpose of providing safe refuge protection from storms that produce high winds, such as tornados and hurricanes. Such structures shall be designated to be hurricane shelters, tornado shelters, or combined hurricane and tornado shelters.

423.4 Group E occupancies. In areas where the shelter design wind speed for tornados is 250 MPH in accordance with Figure 304.2(1) of ICC 500, all Group E occupancies with an aggregate occupant load of 50 or more shall have a storm shelter constructed in accordance with ICC 500. The shelter shall be capable of housing the total occupant load of the Group E occupancy.

Exceptions:

1. Group E day care facilities.

2. Group E occupancies accessory to places of religious worship.

3. Buildings meeting the requirements for shelter design in ICC 500.

Add new text as follows:

423.4.1 Required occupant capacity. The required occupant capacity of the storm shelter shall include all the buildings on the site, and shall be the greater of the following:

1. The total occupant load of the classrooms, vocational rooms and offices in the Group E occupancy.

2. The occupant load of any indoor assembly space that is associated with the Group E occupancy.

Exceptions:

1. Where a new building/addition is being added on an existing Group E site, and where the new building/addition is not of sufficient size to accommodate the required occupant capacity of the storm shelter for all the buildings/addition on the site, the storm shelter shall at a minimum accommodate the required occupant capacity for the new building/addition.

2. Where approved by the code official, the required occupant capacity of the shelter shall be permitted to be reduced by the occupant capacity of any existing storm shelters on the site.

423.4.2 Location. Storm shelters shall be located within the buildings they serve, or shall be located where the maximum distance of travel from at least one exterior door of each building to a door of the shelter serving that building does not exceed one thousand (1,000) feet (304.8 m).

In Section 1612.3, insert "City of Troy" into [NAME OF JURISDICTION].

In Section 1612.3, insert "September, 29, 2010" into [INSERT DATE OF ISSUANCE].

Ordinance No. 936A, 932A, 933A, 934A, 935A of the City of Troy entitled 2009 International Building Code, 2009 International Plumbing Code, 2009 International Mechanical Code, 2009 International Energy Conservation Code, 2009 International Fuel Gas Code, and all other ordinances, laws or parts of ordinances and laws in conflict herewith are hereby repealed.

This Section and the laws, rules, regulations, provisions, requirements, orders and matters established and adopted hereby shall take effect and be in full force and effective on September 1, 2016, which is after the date of this Section's final passage and adoption.

The City of Troy Building Official is hereby ordered and directed to cause this legislation to be published.

Section 500.015 Adoption of the International Plumbing Code (2015).

[R.O. 2006 § 500.015; Ord. No. 932 §§ 1—2, 5, 7-21-2003; Ord. No. 932A §§ 1—2, 5, 6-21-2004; Ord. No. 1110 § 3(1, 2, 5), 12-21-2009; Ord. No. 1223 §3, 5-17-2016]

A certain document, three (3) copies of which are on file in the office of the Building Official of the City of Troy, being marked and designated as the International Plumbing Code, 2015 Edition, as published by the International Code Council, be and is hereby adopted as the Plumbing Code of the City of Troy, in the State of Missouri, regulating and governing the design, construction, quality of materials, erection, installation, alteration, repair, location, relocation, replacement, addition to, use or maintenance of plumbing systems as herein provided; providing for the issuance of permits and collection of fees therefor; and each and all of the regulations, provisions, penalties, conditions and terms of said Plumbing Code on file in the office of the Building Official are hereby referred to, adopted, and made a part hereof, as if fully set out in this legislation, with the additions, insertions, deletions and changes, if any, prescribed in Subsection (B) of Section 500.015.

The following sections of the International Plumbing Code (2015) are hereby revised:

In Section 101.1, insert "City of Troy" into [NAME OF JURISDICTION].

In Section 106.6.2, insert "Per the Building Permit Fee Schedule (See Table 1 to Title IV of the Municipal Code of the City of Troy)" into [JURISDICTION TO INSERT APPROPRIATE SCHEDULE].

In Section 106.6.3, paragraph 2, insert "Zero" into [SPECIFY PERCENTAGE].

In Section 106.6.3, paragraph 3, insert "One hundred" into [SPECIFY PERCENTAGE].

In Section 108.4, insert "Proceeding with work without the required inspection" into [SPECIFY OFFENSE].

In Section 108.4, insert "five hundred dollars ($500.00)" into [AMOUNT].

In Section 108.4, insert "Zero" into [NUMBER OF DAYS].

In Section 305.4.1, insert "30" into first [NUMBER].

In Section 305.4.1, insert "30" into second [NUMBER].

10.

In Section 903.1, insert "12" into [NUMBER].

Ordinance No. 932A of the City of Troy entitled "Section: 500.015 Adoption of the International Plumbing Code" and all other ordinances, laws or parts of ordinances and laws in conflict herewith are hereby repealed.

The City of Troy Building Official is hereby ordered and directed to cause this legislation to be published.

Section 500.020 Adoption of the International Mechanical Code (2015).

[R.O. 2006 § 500.020; Ord. No. 933 §§ 1—2, 5, 7-21-2003; Ord. No. 933A §§ 1—2, 5, 6-21-2004; Ord. No. 1110 § 4(1, 2, 5), 12-21-2009; Ord. No. 1223 §4, 5-17-2016]

A certain document, three (3) copies of which are on file in the office of the Building Official of the City of Troy, being marked and designated as the International Mechanical Code, 2015 Edition, as published by the International Code Council, be and is hereby adopted as the Mechanical Code of the City of Troy, in the State of Missouri, regulating and governing the design, construction, quality of materials, erection, installation, alteration, repair, location, relocation, replacement, addition to, use or maintenance of mechanical systems as herein provided; providing for the issuance of permits and collection of fees therefor; and each and all of the regulations, provisions, penalties, conditions and terms of said Mechanical Code on file in the office of the Building Official of the City of Troy are hereby referred to, adopted, and made a part hereof, as if fully set out in this legislation, with the additions, insertions, deletions and changes, if any, prescribed in Subsection (B) of Section 500.020.

The following sections of the International Mechanical Code (2015) are hereby revised:

In Section 101.1, insert "City of Troy" into [NAME OF JURISDICTION].

In Section 106.5.2, insert "Per the Building Permit Fee Schedule (See Table to Title IV of the Municipal Code of the City of Troy)" into [JURISDICTION TO INSERT APPROPRIATE SCHEDULE].

In Section 106.5.3, insert "Zero" into paragraph 2 [SPECIFY PERCENTAGE].

In Section 106.5.3, insert "One hundred" into paragraph 3 [SPECIFY PERCENTAGE].

In Section 108.4, insert "Proceeding with work without the required inspection" into [SPECIFY OFFENSE].

In Section 108.4, insert "five hundred dollars ($500.00)" into [AMOUNT].

In Section 108.4, insert "Zero" into [NUMBER OF DAYS].

In Section 108.5, insert "Zero" into first [AMOUNT].

In Section 108.5, insert "Five hundred" into second [AMOUNT].

Ordinance No. 933A of the City of Troy entitled "2009 International Mechanical Code" and all other ordinances, laws or parts of ordinances or laws in conflict herewith are hereby repealed.

The City of Troy Building Official is hereby ordered and directed to cause this legislation to be published.

Section 500.025 Adoption of the International Energy Conservation Code (2015).

[R.O. 2006 § 500.025; Ord. No. 934 §§ 1—2, 5, 7-21-2003; Ord. No. 934A §§ 1—2, 5, 6-21-2004; Ord. No. 1110 § 5(1, 2, 5), 12-21-2009; Ord. No. 1223 §5, 5-17-2016]

A certain document, three (3) copies of which are on file in the office of the Building Official of the City of Troy, being marked and designated as the International Energy Conservation Code, 2015 Edition, as published by the International Code Council, be and is hereby adopted as the Energy Conservation Code of the City of Troy, in the State of Missouri, for regulating and governing energy-efficient building envelopes and installation of energy-efficient mechanical, lighting and power systems as herein provided; providing for the issuance of permits and collection of fees therefor; and each and all of the regulations, provisions, penalties, conditions and terms of said Energy Conservation Code on file in the office of the Building Official are hereby referred to, adopted, and made a part hereof, as if fully set out in this legislation, with the additions, insertions, deletions and changes, if any, prescribed in Subsection (B) of Section 500.025.

The following sections of the International Energy Conservation Code (2015) are hereby revised:

In Section C101.1, insert "City of Troy" into [NAME OF JURISDICTION].

In Section R101.1, insert "City of Troy" into [NAME OF JURISDICTION].

Ordinance No. 934A of the City of Troy entitled "2009 International Energy Conservation Code" and all other ordinances, laws or parts of ordinances or laws in conflict herewith are hereby repealed.

The City of Troy Building Official is hereby ordered and directed to cause this legislation to be published.

Section 500.030 Adoption of the International Fuel Gas Code (2015).

[R.O. 2006 § 500.030; Ord. No. 935 §§ 1—2, 5, 7-21-2003; Ord. No. 935A §§ 1—2, 5, 6-21-2004; Ord. No. 1110 § 6(1, 2, 5), 12-21-2009; Ord. No. 1223 §6, 5-17-2016]

A certain document, three (3) copies of which are on file in the office of the Building Official of the City of Troy, being marked and designated as the International Fuel Gas Code, 2015 Edition, as published by the International Code Council, be and is hereby adopted as the Fuel Gas Code of the City of Troy, in the State of Missouri, for regulating and governing fuel gas systems and gas-fired appliances as herein provided; providing for the issuance of permits and collection of fees therefor; and each and all of the regulations, provisions, penalties, conditions and terms of said Fuel Gas Code on file in the office of the Building Official are hereby referred to, adopted, and made a part hereof, as if fully set out in this legislation, with the additions, insertions, deletions and changes, if any, prescribed in Subsection (B) of Section 500.030.

The following sections of the International Fuel Gas Code (2015) are hereby revised:

In Section 101.1, insert "City of Troy" into [NAME OF JURISDICTION].

In Section 106.6.2, insert "Per the Building Permit Fee Schedule (See Table 1 to Title IV of the Municipal Code of the City of Troy)" into [JURISDICTION TO INSERT APPROPRIATE SCHEDULE].

In Section 106.6.3, insert "Zero" into paragraph 2 [SPECIFY PERCENTAGE].

In Section 106.6.3, insert "One hundred" into paragraph 3 [SPECIFY PERCENTAGE].

In Section 108.4, insert "Proceeding with work without the required inspection" into [SPECIFY OFFENSE].

In Section 108.4, insert "Five hundred dollars ($500.00)" into [AMOUNT].

In Section 108.4, insert "Zero" into [NUMBER OF DAYS].

In Section 108.5, insert "Zero" into first [AMOUNT].

In Section 108.5, insert "Five hundred" into second [AMOUNT].

Ordinance No. 935A of the City of Troy entitled "2009 International Fuel Gas Code" and all other ordinances or parts of laws in conflict herewith are hereby repealed.

The City of Troy Building Official is hereby ordered and directed to cause this legislation to be published.

Section 500.035 Adoption of the International Residential Code (2015).

[R.O. 2006 § 500.035; Ord. No. 937 §§ 1—2, 5, 7-21-2003; Ord. No. 937A §§ 1—2, 5, 6-21-2004; Ord. No. 1110 § 7(1, 2, 5), 12-21-2009; Ord. No. 1115, 6-2-2010; Ord. No. 1127, 9-20-2010; Ord. No. 1223 §7, 5-17-2016]

A certain document, three (3) copies of which are on file in the office of the Building Official of the City of Troy, being marked and designated as the International Residential Code, 2015 Edition, as published by the International Code Council, be and is hereby adopted as the Residential Code of the City of Troy, in the State of Missouri, for regulating and governing the construction, alteration, movement, enlargement, replacement, repair, equipment, location, removal and demolition of detached one- and two-family dwellings and multiple single-family dwellings (townhouses) not more than three stories in height with separate means of egress as herein provided; providing for the issuance of permits and collection of fees therefor; and each and all of the regulations, provisions, penalties, conditions and terms of said Residential Code on file in the office of the Building Official are hereby referred to, adopted, and made a part hereof, as if fully set out in this Section, with the additions, insertions, deletions and changes, if any, prescribed in Subsection (B) of Section 500.035.

The following sections of the International Residential Code (2015) are hereby revised:

In Section R101.1, insert "City of Troy" into [NAME OF JURISDICTION].

Section R103 Department of Building Safety is deleted in its entirety.

Section R302.13: Fire Protection of Floors is hereby amended to read as follows: R302.13: Fire Protection of Floors. Deleted in its entirety.

[Ord. No. 1258, 9-20-2018]

The following sections of the International Residential Code (2015) are hereby revised to insert the following sections in their place. Any stricken through text shall be deleted in the International Residential Code (2015) utilized by the City of Troy and, if applicable, underlined text is inserted in the sections. The sections are amended to read as follows:

	R106.3.1 Approval of construction documents. Where the Building Official issues a permit, the construction documents shall be approved in writing or by a stamp that states "REVIEWED FOR CODE COMPLIANCE." One set of construction documents so reviewed shall be retained by the Building Official. The other set may be kept at the site of work or made available at the time of inspection and shall be open to inspection by the Building Official or a duly authorized representative.
	R108.6 Work commencing before permit issuance. Any person who commences work requiring a permit on a building, structure, electrical, gas, mechanical or plumbing system before obtaining the necessary permits shall be subject to a fee established by the applicable governing authority that shall be in addition to the required permit fees.
	Exceptions:
	1. Earthwork.
	2. Stakeouts and other necessary planning procedures.
	SECTION R202 DEFINITIONS
	Revise as follows:
	PAN FLASHING. Corrosion-resistant flashing at the base of an opening that is integrated into the building exterior wall to direct water to the exterior.
	TABLE R301.2(1): CLIMATIC AND GEOGRAPHIC DESIGN CRITERIA. The following values shall be entered into the table and footnotes B and H to the table are amended as follows:

	Ultimate Wind Speed:	115 (51)
	Ground Snow Load:	20
	Wind Design Speed:	90
	Wind Topographic Effects:	No
	Special Wind Region:	No
	Wind-Borne Debris Zone:	No
	Seismic Design Category:	B
	Weathering:	Severe
	Frost Line Depth:	30 inches
	Termite:	Moderate to Heavy
	Winter Design Temp:	6
	Ice Barrier Underlayment Required:	No
	Flood Hazards:	09-29-2010
	Air Freezing Index:	1000
	Mean Annual Temp:	56.3

	Footnotes B and H are amended to read as follows:
	B. The frost line depth may require deeper footings than indicated in Figure R403.1(1). The jurisdiction shall fill in the frost line depth column with thirty (30) inches, the minimum depth of footing below finish grade.
	H. The jurisdiction shall fill in this part of the table with "No."
	R302.1 Exterior walls. Construction, projections, openings and penetrations of exterior walls of dwellings and accessory buildings shall comply with Table R302.1(1) as amended; or dwellings equipped throughout with an automatic sprinkler system installed in accordance with Section P2904 shall comply with Table R302.1(2).
	Exceptions:
	1.	Walls, projections, openings or penetrations in walls perpendicular to the line used to determine the fire separation distance.
	2.	Walls of dwellings and accessory structures located on the same lot.
	3.	Detached tool sheds and storage sheds, playhouses and similar structures exempted from permits are not required to provide wall protection based on location on the lot. Projections beyond the exterior wall shall not extend over the lot line.
	4.	Detached garages accessory to a dwelling located within two (2) feet (610 mm) of a lot line are permitted to have roof eave projections not exceeding four (4) inches (102 mm).
	5.	Foundation vents installed in compliance with this code are permitted.
	6.	Cantilevered manufactured fireplaces.
	7.	Roof eave overhangs.
	8.	Uncovered decks.

Table R302.1(1)
Exterior Walls
Exterior Wall Element		Minimum Fire-Resistance Rating	Minimum Fire Separation Distance
Walls	Fire-resistance rated	1 hour - tested in accordance with ASTM E 119 or UL 263 with exposure from both sides	0 feet to < 3 feet
	Not fire-resistance rated	0 hours	> 3 feet
Projections	Fire-resistance rated	1 hour on the underside^{a, b}	2 feet
	Not fire-resistance rated	0 hours	3 feet
Openings in walls	Not allowed	N/A	< 3 feet
	25% maximum of wall area	0 hours	3 feet
	Unlimited	0 hours	3 feet
Penetrations	All	Comply with Section R302.4	< 3 feet
		None required	3 feet

	For SI: 1 foot = 304.8 mm
	N/A = Not Applicable

	a. Roof eave fire-resistance rating shall be permitted to be reduced to zero (0) hours on the underside of the eave if fireblocking is provided from the wall top plate to the underside of the roof sheathing.
	b. Roof eave fire-resistance rating shall be permitted to be reduced to zero (0) hours on the underside of the eave, provided that gable vent openings are not installed.
	R302.2 Townhouses. Common walls separating townhouses shall be assigned a fire-resistance rating in accordance with Section R302.2, Item 1 or 2. The common wall shared by two townhouses shall be constructed without plumbing or mechanical equipment, ducts or vents in the cavity of the common wall. The wall shall be rated for fire exposure from both sides and shall extend to and be tight against exterior walls and the underside of the roof sheathing. Electrical installations shall be in accordance with Chapters 34 through 43. Penetrations of the membrane of common walls for electrical outlet boxes shall be in accordance with Section R302.4.
	1. Where a fire sprinkler system in accordance with Section P2904 is provided, the common wall shall be not less than a one-hour fire-resistance-rated wall assembly tested in accordance with ASTM E 119 or UL 263.
	2. Where a fire sprinkler system in accordance with Section P2904 is not provided, the common wall shall be not less than a two-hour fire-resistance-rated wall assembly tested in accordance with ASTM E 119 or UL 263, or the common wall may be two independent one-hour fire-resistance-rated wall assemblies.
	R302.5.1 Opening protection. Openings from a private garage directly into a room used for sleeping purposes shall not be permitted. Other openings between the garage and residence shall be equipped with solid wood doors not less than 1 3/8 inches (35 mm) in thickness, solid or honeycomb-core steel doors not less than 1 3/8 inches (35 mm) thick, or 20-minute fire-rated doors.
	R302.5.2 Duct penetration. Ducts in the garage and ducts penetrating the walls or ceilings separating the dwelling from the garage shall be constructed of a minimum No. 28 gage (0.48 mm) sheet steel or other approved material and shall not have openings into the garage.
	R302.13 Fire protection of floors. Floor assemblies that are not required elsewhere in this code to be fire-resistance rated shall be provided with 1/2-inch (12.7 mm) gypsum wallboard membrane, 5/8-inch (16 mm) wood structural panel membrane, or equivalent on the underside of the floor framing member. Penetrations or openings for ducts, vents, electrical outlets, lighting, devices, luminaires, wires, speakers, drainage, piping and similar openings or penetrations shall be permitted. Fire blocking, draft stopping, and/or additional framing is not required.
	Exceptions:
	1. Floor assemblies located directly over a space protected by an automatic sprinkler system in accordance with Section P2904, NFPA 13D, or other approved equivalent sprinkler system.
	2. Floor assemblies located directly over a crawl space not intended for storage or fuel-fired appliances.
	3. Portions of floor assemblies shall be permitted to be unprotected where complying with the following:
	3.1. The aggregate area of the unprotected floor assembly does not exceed one hundred (100) square feet per HVAC zone.
	3.2. Areas of the floor assembly covered by HVAC metal plenum, trunk lines, and steel structural beams shall be considered protected. Gypsum wallboard membrane shall be within one (1) inch of all previously listed items.
	4. Wood floor assemblies using dimension lumber or structural composite lumber equal to or greater than two-inch-by-ten-inch (50.8 mm by 254 mm) nominal dimension, or other approved floor assemblies demonstrating equivalent fire performance.
	R303.3 Bathrooms. Bathrooms, water closet compartments and other similar rooms shall be provided with aggregate glazing area in windows of not less than three (3) square feet (0.3 m²), one-half (1/2) of which must be openable.
	Exception: The glazed areas shall not be required where artificial light and a local exhaust system are provided. The minimum local exhaust rates shall be determined in accordance with Section M1507. Exhaust air from the space shall be exhausted directly to the outdoors, to a ventilated soffit, or a gabled end vent.
	R303.4 Mechanical ventilation. Where the air infiltration rate of a dwelling unit is three (3) air changes per hour or less where tested with a blower door at a pressure of two tenths (0.2) inch w.c. (50 Pa) in accordance with Section N1102.4.1.2, the dwelling unit shall be provided with whole-house mechanical ventilation in accordance with Section M1507.3.
	R303.5.2 Exhaust openings. Exhaust air shall not be directed below six (6) feet and eight (8) inches onto public walkways.
	R303.8 Exterior stairway illumination. Exterior stairways shall be provided with an artificial light source. Exterior stairways providing access to a basement from the outdoor grade level shall be provided with an artificial light source located at the bottom landing of the stairway.
	R309.5 Fire sprinklers. Private garages shall be protected by fire sprinklers where the garage wall has been designed based on Table 302.1(2), Footnote a, and the homeowner has opted to purchase a fire sprinkler system for their residence, as per Section 67.281, RSMo. Sprinklers in garages shall be connected to an automatic sprinkler system that complies with Section P2904. Garage sprinklers shall be residential sprinklers or quick-response sprinklers, designed to provide a density of 0.05 gpm/ft². Garage doors shall not be considered obstructions with respect to sprinkler placement.
	R311.3 Floors and landings at exterior doors. There shall be a landing or floor at each required egress exterior door. The width of each landing shall not be less than the door served. Every landing shall have a dimension of not less than thirty six (36) inches (914 mm) measured in the direction of travel. The slope at exterior landings shall not exceed 1/4 unit vertical in twelve (12) units horizontal (two percent).
	Exception: Exterior balconies less than sixty (60) square feet (5.6 m²) and only accessible from a door are permitted to have a landing less than thirty-six (36) inches (914 mm) measured in the direction of travel.
	R311.3.2 Floor elevations for other exterior doors. Doors other than the required egress door shall be provided with landings or floors not more than 7 3/4 inches (196 mm) below the top of the threshold.
	Exception: A top landing is not required where a stairway of four (4) or fewer risers is located on the exterior side of the door, provided that door does not swing over the stairway.
	R311.7.5 Stair treads and risers. Stair treads and risers shall meet the requirements of this Section. For the purposes of this Section, dimensions and dimensioned surfaces shall be exclusive of carpets, rugs or runners.
	R311.7.5.1 Risers. The riser height shall be not more than 7 3/4 inches (196 mm). The riser shall be measured vertically between leading edges of the adjacent treads. The greatest riser height within any flight of stairs shall not exceed the smallest by more than 3/8 inch (9.5 mm). Risers shall be vertical or sloped from the underside of the nosing of the tread above at an angle not more than thirty degrees (30°) (0.51 rad) from the vertical. Open risers are permitted, provided that the openings located more than thirty (30) inches (762 mm), as measured vertically, to the floor or grade below do not permit the passage of a four-inch-diameter (102 mm) sphere.
	Exceptions:
	1. The opening between adjacent treads is not limited on spiral stairways.
	2. The riser height of spiral stairways shall be in accordance with Section R311.7.10.1.
	R311.7.5.2 Treads. The tread depth shall be not less than ten (10) inches (254 mm). The tread depth shall be measured horizontally between the vertical planes of the foremost projection of adjacent treads and at a right angle to the tread's leading edge. The greatest tread depth within any flight of stairs shall not exceed the smallest by more than 3/8 inch (9.5 mm).
	R311.7.5.2.1 Winder treads. Winder treads shall have a tread depth of not less than ten (10) inches (254 mm) measured between the vertical planes of the foremost projection of adjacent treads at the intersections with the walkline. Winder treads shall have a tread depth of not less than six (6) inches (152 mm) at any point within the clear width of the stair. Within any flight of stairs, the largest winder tread depth at the walk line shall not exceed the smallest winder tread by more than 3/8 inch (9.5 mm). Consistently shaped winders at the walkline shall be allowed within the same flight of stairs as rectangular treads and do not have to be within 3/8 inch (9.5 mm) of the rectangular tread depth.
	Exception: The tread depth at spiral stairways shall be in accordance with Section R311.7.10.1.
	Exceptions:
	1. For remodeling projects in existing homes, homes in urban, infill or high-density developments, or historical buildings or dwellings, riser height of not more than 8 1/4 inches (210 mm) and tread depth of not more than nine (9) inches (229 mm) will be allowed.
	2. For remodeling projects in existing homes, stair tread and riser will be allowed to mimic previous or existing conditions.
	R311.7.6 Landings for stairways. There shall be a floor or landing at the top and bottom of each stairway. The width perpendicular to the direction of travel shall be not less than the width of the flight served. Landings of shapes other than square or rectangular shall be permitted, provided the depth at the walk line and the total area is not less than that of a quarter circle with a radius equal to the required landing width. Where the stairway has a straight run, the depth in the direction of travel shall not be less than 36 inches (914 mm).
	Exception: A floor or landing is not required at the top of an interior or exterior flight of stairs, including stairs in an enclosed garage, provided that a door does not swing over the stairs.
	R312.1.1 Where required. Guards shall be located along open-sided walking surfaces, including stairs, ramps and landings that are located more than thirty (30) inches (762 mm) measured vertically at the edge of the walking surface to the floor or grade below. Insect screening shall not be considered as a guard.
	R312.2 Window fall protection. Window fall protection shall be provided in accordance with Sections R312.2.1 and R312.2.2.
	R312.2.1 Window sills, in dwelling units, where the top of the sill of an operable window opening is located less than twenty-four (24) (310 mm) above the finished floor and greater than seventy-two (72) inches (1,829 mm) above the finished grade or other surface below on the exterior of the building, the operable window shall comply with one of the following:
	1. Operable windows with openings that will not allow a four-inch diameter (102 mm) sphere to pass through the opening where the opening is in its largest open position.
	2. Operable windows that are provided with window fall prevention devices that comply with ASTM F 2090.
	3. Operable windows that are provided with window opening control devices that comply with Section R312.2.2.
	R312.2.2 Window opening control devices. Window opening control devices shall comply with ASTM F 2090. The window opening control device, after operation to release the control device allowing the window to fully open, shall not reduce the new clear opening area of the window unit to less than the area required by Section R310.2.1.
	R313.1 Townhouse automatic fire sprinkler systems. An automatic residential fire sprinkler system shall be installed in townhouses, in accordance with Section 67.281, RSMo.
	Exception: An automatic residential fire sprinkler system shall not be required where additions or alterations are made to existing townhouses that do not have an automatic residential fire sprinkler system installed.
	R313.1.1 Design and installation. Automatic residential fire sprinkler systems for townhouses shall be designed and installed in accordance with Section P2904 or NFPA 13D.
	R313.2 One- and two-family dwellings automatic fire systems. An automatic residential fire sprinkler system shall be installed in one- and two-family dwellings. A builder of a single-family dwelling or residence or multiunit dwellings of four or fewer units shall offer to any purchaser on or before the time of entering into the purchase contract the option, at the purchaser's cost, to install or equip fire sprinklers in the dwelling, residence, or unit. Notwithstanding any other provision of law to the contrary, no purchaser of such a single-family dwelling, residence, or multiunit dwelling shall be denied the right to choose or decline to install a fire sprinkler system in such dwelling or residence being purchased by any code, ordinance, rule, regulation, order, or resolution by any county or other political subdivision. Any county or other political subdivision shall provide in any such code, ordinance, rule, regulation, order, or resolution the mandatory option for purchasers to have the right to choose and the requirement that builders offer to purchasers the option to purchase fire sprinklers in connection with the purchase of any single-family dwelling, residence, or multiunit dwelling of four or fewer units.
	Exception: An automatic residential fire sprinkler system shall not be required for additions or alterations to existing buildings that are not already provided with an automatic residential sprinkler system.
	R313.2.1 Design and installation. Automatic residential fire sprinkler systems shall be designed and installed in accordance with Section P2904 or NFPA 13D.
	R323.1 General. This Section applies to storm shelters where constructed as separate detached buildings or where constructed as safe rooms within buildings for the purpose of providing refuge from storms that produce high winds, such as tornadoes and hurricanes. In addition to other applicable requirements in this code, storm shelters shall be constructed in accordance with ICC/NSSA-500, except when located below grade or if basement walls are fully constructed with concrete.
	R403.1.7 Footings on or adjacent to slopes. The placement of buildings and structures on or adjacent to slopes steeper than one unit vertical in three (3) units horizontal (33.3-percent slope) shall conform to Sections R403.1.7.1 through R403.1.7.4 or plans as signed and sealed by a registered engineer.

Table R404.1.2(10) Concrete Foundation Walls
Maximum Wall Height	Maximum Depth of Unbalanced Backfill	Minimum Nominal Wall Thickness
7 feet 0 inches	6 feet 0 inches or less 7 feet 0 inches	8 inches 10 inches (Note a)
8 feet 0 inches	6 feet 0 inches or less 7 feet 0 inches 8 feet 0 inches	8 inches (Note a) 8 inches (Note a) 8 inches (Note a)
9 feet 0 inches	6 feet 0 inches or less 7 feet 0 inches 8 feet 0 inches 9 feet 0 inches	10 inches (Note b) 10 inches (Note b) 10 inches (Note b) 10 inches (Note b)

	Note a:	Concrete foundation walls may be constructed a minimum of nominal eight (8) inches thick where the wall height from the top of the footing to the top of the wall does not exceed eight (8) feet. A minimum of two #4 reinforcing bars shall be placed horizontally in the top and bottom of the foundation wall. A minimum of two #5 reinforcing bars shall be provided around all window and door openings in concrete foundation and basement walls; bars shall extend a minimum of twenty-four (24) inches beyond the corners of the openings.
	Note b:	Concrete foundation walls may be constructed a minimum of nominal ten (10) inches thick. A minimum of two #5 reinforcing bars shall be placed horizontally in the top, middle, and bottom of the foundation wall. A minimum of two #5 reinforcing bars shall be provided around all window and door openings in concrete foundation and basement walls; bars shall extend a minimum of twenty-four (24) inches beyond the corners of the openings.

	The concrete minimum nominal wall thickness shall be eight (8) inches for foundation walls in soil classes SC, MH, ML-MC and inorganic CL when the maximum wall height is eight (8) feet.
	The concrete minimum wall thickness shall be ten (10) inches for foundation walls in soil classes SC, MH, ML-CL and inorganic CL when the maximum wall height is nine (9) feet.
	The concrete minimum wall thickness shall be twelve (12) inches for foundation walls in soil classes SC, MH, ML-CL and inorganic CL when the maximum wall height is ten (10) feet.
	405.1 Concrete or masonry foundations. Drains shall be provided around concrete or masonry foundations that retain earth and enclose habitable or usable spaces located below grade. Drainage tiles, gravel or crushed stone drains, perforated pipe or other approved systems or materials shall be installed at or below the area to be protected and shall discharge by gravity or mechanical means into an approved drainage system. Gravel or crushed stone drains shall extend not less than one (1) foot (305 mm) beyond the outside edge of the footing and six (6) inches (152 mm) above the top of the footing and be covered with an approved filter membrane material. The top of open joints of drain tiles shall be protected with strips of building paper. Except where otherwise recommended by the drain manufacturer, perforated drains shall be surrounded with an approved filter membrane or the filter membrane shall cover the washed gravel or crushed rock covering the drain. Drainage tiles or perforated pipe shall be placed on a minimum of two (2) inches (51 mm) of washed gravel or crushed rock not less than one sieve size larger than the tile joint opening or perforation and covered with not less than six (6) inches (152 mm) of the same material.
	Exceptions:
	1. A drainage system is not required where the foundation is installed on well-drained ground or sand-gravel mixture soils according to the Unified Soil Classification System, Group I soils, as detailed in Table R405.1.
	2. Drains provided as detailed in Section R405.1.2 are approved as an alternative method to meet the requirements of this Section.
	R405.1.2 Soil evaluations. An evaluation of the soil for the presence or absence of groundwater is required. The evaluation report shall be based on either a subsurface soil investigation or satisfactory data from adjacent areas together with an inspection of the excavation prior to pouring concrete.
	R405.1.2.1 Groundwater present. Provide drain tile, perforated pipe or other approved foundation drainage systems (such as water channel system) around perimeter of the outside of the foundation and inside the foundation. Drain discharge shall be by gravity to daylight or be connected to a basement floor sump.
	R405.1.2.2 No groundwater present. Provide drain tile, perforated pipe or other approved foundation drainage systems (such as water channel system) around perimeter of the outside of the foundation or inside the foundation. Drain discharge shall be by gravity to daylight or be connected to a basement floor sump.
	R405.1.2.3 Filter membranes. An approved filter membrane shall be placed over the top of the joints/pipe perforations. The tile/pipe shall be placed on two (2) inches minimum of gravel or crushed stone and have six (6) inches of minimum cover.
	R405.1.2.4 Drainage system. A drainage system shall discharge by gravity to daylight or be connected to an approved sump (fifteen (15) inches in diameter by eighteen (18) inches deep with fitted cover). A sump pump shall be provided if the basement is finished or partially finished with pump discharge by an approved method.
	R507.2.4 Deck lateral load connection. The lateral load connection required by Section R507.1 shall be permitted to be in accordance with Figure R507.2.3(1) or R507.2.3(2). Where the lateral load connection is provided in accordance with Figure R507.2.3(1), hold-down tension devices shall be installed in not less than two locations per deck, within 24 inches of each end of the deck. Each device shall have an allowable stress design capacity of not less than one thousand five hundred (1,500)pounds (6672 N). Where the lateral load connections are provided in accordance with Figure R507.2.3(2), the hold down tension devices shall be installed in not less than four locations per deck, and each device shall have an allowable stress design capacity of not less than seven hundred fifty (750) pounds (3336 N).
	R602.3.5 Braced wall panel uplift load path. Braced wall panels located at exterior walls that support roof rafters or trusses (including stories below top story) shall have the framing members connected in accordance with one of the following:
	1. Fastening in accordance with Table 602.3(1) where:
	1.1 The ultimate design wind speed does not exceed 115 125 mph (51 56 m/s), the wind exposure category is B, the roof pitch is 5:12 or greater, and the roof span is thirty-two (32) feet (9,754 mm) or less.
	1.2 The net uplift value at the top of a wall does not exceed 100 plf (146 N/mm). The net uplift value shall be determined in accordance with Section R802.11 and shall be permitted to be reduced by 60 plf (86 N/mm) for each full wall above.
	2. Where the net uplift value at the top of a wall exceeds 100 plf (146 N/mm), installing approved uplift framing connectors to provide a continuous load path from the top of the wall to the foundation or to point where the uplift force is 100 plf (146 N/mm) or less. The net uplift value shall be as determined in Item 1.2 above.
	2. Wall sheathing and fasteners designed to resist combined uplift and shear forces in accordance with accepted engineering practice.
	R602.7.5 Supports for headers. Headers shall be supported on each end with one or more jack studs or with approved framing anchors in accordance with Table R602.7(1) or R602.7.(2). The full-height stud adjacent to each end of the header shall be end nailed to each end of the header with four-16d nails (3.5 inches by 0.135 inches). The minimum number of full-height studs at each end of a header shall be in accordance with Table R602.7.5.

Table R602.7.5
Minimum Number of Full Height Studs at Each End of Headers in Exterior Walls
Header Span (feet)	Maximum Stud Spacing (inches) [per Table R602.3(5)]
	16	24
<3	1	1
4	1	1
8	1	1
12	1	1
16	1	1

	R602.13 Alternate simplified bracing method for one- and two-family dwellings when the entire structure is sheathed with wood structural panels and located in wind exposure A or B. The construction documents shall detail the locations and widths of all braced wall panels in accordance with this Section.
	R602.13.1 Wood structural sheathing. The building exterior walls shall be sheathed with seven-sixteenths-inch (11.1 mm) or thicker plywood or OSB wood structural panels. The wood structural panels shall be applied to all exterior walls, gable ends and band boards. All vertical joints between panels shall be blocked. Horizontal joints in braced wall panels shall be blocked.
	R602.13.2 Braced wall panel locations. Braced wall panels shall be located in every exterior braced wall line in accordance with the following criteria:
	1. The outside edge of the first braced wall panel meeting the width established in Table R602.13.3 shall be a maximum of twelve and five-tenths (12.5) feet (3,810 mm) or less from each end of the braced wall line. The outside stud of the first braced wall panels closest to the end of the braced wall line shall be secured with a hold-down device securing the end stud to the foundation with a minimum uplift design value of eight hundred (800) pounds.
	Exception: The eight-hundred-pound hold-down device is not required when the braced wall panel is placed at the end of the braced wall line and there is a twenty-four-inch (610 mm) wide full height sheathed wall placed ninety degrees (90°) to the end of the braced wall line and panel.
	2. The center line spacing of braced wall panels in a braced wall line may not exceed twenty-five (25) feet (7,620 mm).
	R602.13.3 Braced wall panel widths. Braced wall panel locations shall be shown on the floor plans or elevation views and meet the widths established in Table R602.13.3.

Table 602.13.3
Simplified Bracing Panel Widths
		Width of Solid Panel^{a, b}
		8-foot wall height	9-foot wall height	10-foot wall height	12-foot wall height
Plywood/OSB Panel	3:1	32 inches	36 inches	40 inches	48 inches
Simplified Portal Wall^c	6:1	16 inches^d	18 inches^d	20 inches^d	24 inches^d

	a. Linear interpolation is permitted.
	b. Wall height is the vertical distance from the bottom of the sole/sill plate to the top of the double top plate. An additional two-inch (50.8 mm) variation in height is allowed for pre-cut stud framing.
	c. The simplified portal wall, if applicable, shall be constructed in accordance with the applicable detail in Figure R602.13.3. The designer shall provide this detail on the construction documents.
	d. The simplified portal wall width assumes the beam is placed under the top plate of the wall. A smaller width may be calculated for a lower top of beam height using the 6:1 height-to-width ratio.

	R602.13.4 Corner framing. The exterior wall corners shall be constructed in accordance with the applicable detail in Figure R602.10.10.4.
	Exception: Braced wall panels located in accordance with Section R602.13.2.
	R602.13.5 Braced wall line spacing. When the perpendicular distance between the exterior braced wall lines exceeds fifty (50) feet (15,240 mm), the registered design professional shall include the following certification on the drawings: The interior and exterior wall configuration braces for the structure in accordance with or equivalent to the lateral bracing provisions of Section R602.10 of the International Residential Code, 2009 edition or Section 2305 of the International Building Code, 2009 edition.
	R602.13.6 Maximum wall height. Walls greater than twelve (12) feet (3,658 mm) (twelve (12) feet two (2) inches (3,708 mm) actual) in height and twelve (12) feet (3,658 mm) in width shall be designed and detailed by the registered design professional to resist wind loads in both the longitudinal and transverse directions.

OVER RAISED WOOD FLOOR OR SECOND FLOOR

WOOD STRUCTURAL PANEL OVERLAP OPTION

Figure R602.13.3

SIMPLIFIED PORTAL WALL

a. CRIPPLE WALL FRAMING CONSISTING OF STUD FRAMING, SINGLE BOTTOM PLATE, AND DOUBLE TOP PLATE MAY BE ADDED TO THE TOP OF THE NARROW PORTAL WALL AS LONG AS THE COMBINED HEIGHT OF THE TWO WALLS IS LESS THAN OR EQUAL TO TWELVE (12) FEET AND THE TWO WALLS ARE STRAPPED TOGETHER ON THE INTERIOR SIDE WITH A 16GUAGE METAL 1 1/2 INCH WIDE BY TWENTY-ONE-INCH LONG STRAP. A MINIMUM TEN (10) INCHES OF THE STRAP SHALL BE CONNECTED TO EACH WALL OR GABLE TRUSS WITH 9 - 16D NAILS FOR A TOTAL OF 18-16D NAILS IN THE ENTIRE STRAP. STRAPS SHALL BE LOCATED AT EACH END OF THE CONNECTED WALLS OR WALL AND GABLE TRUSS WHERE SPACE ALLOWS FOR THE TEN-INCH LENGTH OF STRAP. THE SPACING BETWEEN THE STRAPS MAY NOT EXCEED FOUR (4) FEET ON CENTER. THE STRAPS SHALL NOT BE BENT HORIZONTALLY TO ACCOMMODATE WOOD FRAMING. IF APPLICABLE, NAILERS SHALL BE ADDED TO ONE OF THE WALLS OR GABLE END USING A MINIMUM OF 9-16D NAILS TO CREATE THE VERTICAL PLANE NEEDED TO MOUNT THE STRAP.

CORNER DETAIL

USED IN CONJUNCTION WITH SIMPLIFIED PORTAL WALL

FIGURE R602.10.10.4

SIMPLIFIED BRACING EXTERIOR CORNER FRAMING

a. END STUD INDICATED ON THE ABOVE DETAILS MAY BE SHIFTED 7/16" TO ALLOW STUD FACE TO BE ALIGNED WITH SHEATHING, OR AN OPTIONAL NON-STRUCTURAL FILLER PANEL MAY BE USED.

	R905.2.8.2 Valleys. Valley linings shall be installed in accordance with the manufacturer's instructions before applying shingles. Valley linings of the following types shall be permitted:
	1. For open valleys (valley lining exposed) lined with metal, the valley lining shall be not less than twenty-four (24) inches (610 mm) wide and of any of the corrosion-resistant metals in Table R905.2.8.2.
	2. For open valleys, valley lining of two plies of mineral-surfaced roll roofing, complying with ASTM D 3909 or ASTM D 6380 Class M, shall be permitted. The bottom layer shall be eighteen (18) inches (457 mm) and the top layer not less than thirty-six (36) inches (914 mm) wide.
	3. For closed valleys (valley covered with shingles), valley lining of one two ply of smooth roll roofing No. 15 felt complying with ASTM D 6380 and not less than thirty-six (36) inches wide (914) mm) ASTM D 226 Type I, ASTM D 4869 Type I, or ASTM D 6757, or valley lining as described in Item 1 and 2 shall be permitted. Self-adhering polymer modified bitumen underlayment complying with ASTM D 1970 shall be permitted in lieu of the lining material.
	R905.2.8.5 Drip Edge. A drip edge shall be provided at eaves and rake edges of shingle roofs. Adjacent segments of drip edge shall be overlapped not less than two (2) inches (51 mm). Drip edges shall extend not less than 1/4 inch (6.4 mm) below the roof sheathing and extend up back onto the roof deck not less than two (2) inches (51 mm). Drip edges shall be mechanically fastened to the roof deck at not more than twelve (12) inches (305 mm) o.c. with fasteners as specified in Section R905.2.5. Underlayment shall be installed over the drip edge along eaves and under the underlayment along rake edges.
	R1005.7 Factory-built chimney offsets. Where a factory-built chimney assembly incorporates offsets, no part of the chimney shall be at an angle of more than thirty degrees (30°) (0.52 rad) from vertical at any point in the assembly, and the chimney assembly shall not include more than four (4) elbows.
	Exception: When chimneys are installed per manufacturer's installation instructions.
	R1006.1.1 Factory-built fireplaces. Exterior combustion air ducts for factory-built fireplaces shall be a listed component of the fireplace or equivalent and shall be installed according to the fireplace manufacturer's instructions.
	R1006.2 Exterior air intake. The exterior air intake on masonry fireplaces shall be capable of supplying combustion air from the exterior of the dwelling or from spaces within the dwelling ventilated with outdoor air such as non-mechanically ventilated crawl or attic spaces. The exterior air intake shall not be located within the garage or basement of the dwelling. The exterior air intake, for other than listed factory-built fireplaces, shall not be located at an elevation higher than the firebox. The exterior air intake shall be covered with a corrosion-resistant screen of one-quarter-inch (6.4 mm) mesh.
	N1101.4 (R102.1.1) Above code programs. The Building Official or other authority having jurisdiction shall be permitted to deem a national, state or local energy-efficiency program to exceed the energy efficiency required by this code. Buildings approved in writing by such an energy-efficiency program shall be considered in compliance with this code. The requirements identified as "mandatory" in this chapter, as applicable, shall be met.
	N1101.5 (R103.2) Information on construction documents. Construction documents shall be drawn to scale upon suitable material. Electronic media documents are permitted to be submitted when approved by the building official. Construction documents shall be of sufficient clarity to indicate the location, nature and extent of the work proposed, and show in sufficient detail pertinent data and features of the building, systems and equipment as herein governed. Details shall include, but are not limited to, as applicable:
	1. Insulation materials and their R values.
	2. Fenestration, U factors and SHGCs.
	3. Area weighted U factor and SHGC calculations.
	4. Mechanical system design criteria.
	5. Mechanical and service water heating system and equipment types, sizes and efficiencies.
	6. Equipment and system controls.
	7. Duct sealing, duct and pipe insulation and location.
	8. Air sealing details.
	N1101.5.1 (R103.2.1) Thermal envelope depiction. The building's thermal envelope shall be represented on the construction drawings.
	N1101.6 (R202) Defined terms.
	PROJECTION FACTOR. The ratio of the horizontal depth of an overhang, eave, or permanently attached shading device, divided by the distance measured vertically from the bottom of the fenestration glazing to the underside of the overhang, eave, or permanently attached shading device.
	N1101.13 (R401.2) Compliance. Projects shall comply with one of the following:
	1. Sections N1101.14 through N1104 as amended.
	2. Section N1105 and the provisions of Sections N1101.14 through N1104 labeled "Mandatory."
	3. An energy rating index (ERI) approach in Section N1106.
	N1101.14 (R401.3) Certificate (Mandatory). A permanent certificate shall be completed by the builder or registered design professional and posted on a wall in the space where the furnace is located, a utility room or an approved location inside the building. Where located on an electrical panel, the certificate shall not cover or obstruct the visibility of the circuit directory label, service disconnect label or other required labels. The certificate shall list the predominant R values of insulation installed in or on ceiling/roof, walls, foundation (slab, basement wall, crawl space wall and/or floor) and ducts outside conditioned spaces; U factors for fenestration and the solar heat gain coefficient (SHGC) of fenestration, and the results from any required duct system and building envelope air leakage testing done on the building. Where there is more than one value for each component, the certificate shall list the value covering the largest area. The certificate shall list the types and efficiencies of heating, cooling and service water heating equipment. Where a gas fired unvented room heater," electric furnace, or baseboard electric heater is installed in this residence, the certificate shall list "gas-fired unvented room heater," "electric furnace" or "baseboard electric heater," as appropriate. An efficiency shall not be listed for gas-fired unvented room heaters, electric furnaces or electric baseboard heaters.

Table N1102.1.2 (R402.1.2)
Insulation and Fenestration Requirements by Component^a
Climate Zone	Fenes- tration U-Factor^b	Skylight^b U-Factor	Glazed Fenes- tration SHGC^{b, c}	Ceiling R-Value	Wood Frame Wall R-Value	Mass Wall R-Valueⁱ	Floor R-Value	Basement^c Wall R-Value	Slab^d R-Value & Depth	Crawl Space^c Wall R-Value
1	NR	0.75	0.25	30	13	3/4	13	0	0	0
2	0.40	0.65	0.25	38	13	4/6	13	0	0	0
3	0.35	0.55	0.25	38	20 or 13 + 5^h	8/13	19	5/13ⁱ	0	5/13
	0.35		0.40	40	20 or 13 + 5			10/13
4 except Marine	0.40	0.55	NR	38	13	8/13	19	0ⁱ	10, 2 ft	10/13
5 and Marine 4	0.32	0.55	NR	49	20 or 13 + 5^h	13/17	30^e	15/19	10, 2 ft	15/19
6	0.32	0.55	NR	49	20 + 5 or 13 + 10^h	15/20	30^e	15/19	10, 4 ft	15/19
7 and 8	0.32	0.55	NR	49	20 + 5 or 13 + 10^h	19/21	38^g	15/19	10, 4 ft	15/19
	For SI: 1 foot = 304.8mm.

	a. R-values are minimums. U-factors and SHGC are maximums. When insulation is installed in a cavity which is less than the label or design thickness of the insulation, the installed R-value of the insulation shall not be less than the R-value specified in the table.
	b. The fenestration U-factor column excludes skylights. The SHGC column applies to all glazed fenestration. Exception: Skylights may be excluded from glazed fenestration SHGC requirements in Climate Zones 1 through 3 where the SHGC for such skylights does not exceed 0.30.
	c. "15/19" means R-15 continuous insulation on the interior or exterior of the home or R-19 cavity insulation at the interior of the basement wall. "15/19" shall be permitted to be met with R-13 cavity insulation on the interior of the basement wall plus R-5 continuous insulation on the interior or exterior of the home. "10/13" means R-10 continuous insulation on the interior or exterior of the home or R-13 cavity insulation at the interior of the basement wall.
	d. R-5 shall be added to the required slab edge R-values for heated slabs. Insulation depth shall be the depth of the footing or two (2) feet, whichever is less in Zones 1 through 3 for heated slabs.
	e. There are no SHGC requirements in the Marine Zone.
	f. Basement wall insulation is not required in warm-humid locations as defined by Figure N1101.10 or Table N1101.10.
	g. Or insulation sufficient to fill the framing cavity, R-19 minimum.
	h. The first value is cavity insulation, the second value is continuous insulation, so "13+5" means R-13 cavity insulation plus R-5 continuous insulation.
	i. The second R-value applies when more than half of the insulation is on the interior of the mass wall.
	j. Exception: Unfinished basements may have up to a maximum of 20% of the total basement wall area exposed above the outside finished grade/ground level as uninsulated concrete foundation walls. The foundation wall area above the outside grade/ground level that may be uninsulated is determined by the formula [.20 times the basement wall height of all walls (including insulated exterior frame walls for walkout basements and walls common to both basement and attached garages) times the perimeter of these basement walls]. In unfinished areas, the basement foundation wall insulation shall extend down to the basement floor slab or to a minimum of twenty-four (24) inches below outside finished grade when the grade is above the floor slab elevation.
	N1102.1.3 (R402.1.3) R-value computation. Insulation material used in layers, such as framing cavity insulation, or continuous insulation shall be summed to compute the corresponding component R-value. The manufacturer's settled R-value shall be used for blown insulation. Computed R-values shall not may include an R-value for other building materials or air films. Where insulated siding is used for the purpose of complying with the continuous insulation requirements of Table N1102.1.2, the manufacturer's labeled R-Value for insulated siding shall be reduced by R-0.6.
	N1102.1.5 (R402.1.5) Total UA alternative. If the total building envelope UA (sum of U-factor times assembly area) is less than or equal to the total UA resulting from using the U-factors in Table N1102.1.4 (multiplied by the same assembly area as in the proposed building), the building shall be considered in compliance with Table N1102.1.2. The UA calculation shall be done using a method consistent with the ASHRAE Handbook of Fundamentals and shall include the thermal bridging effects of framing materials. The SHGC requirements shall be met in addition to UA compliance.
	Exception: Glazed fenestration SHGC. In Climate Zone 4, permanently shaded vertical fenestration shall be permitted to satisfy SHGC requirements. The projection factor of an overhang, eave, or permanently attached shading device shall be greater than or equal to the value listed in Table N1102.2.2.1 for the appropriate orientation. The minimum projection shall extend beyond each side of the glazing a minimum of twelve (12) inches. Each orientation shall be rounded to the nearest cardinal orientation (+/- forty-five degrees (45°) or 0.79 rad) for purposes of calculations and demonstrating compliance.

	Table N1102.1.5
	Minimum Projection Factor Required by Orientation for SHGC Exception
	Orientation	Projection Factor
	North	>=0.40^a
	South	>=0.20
	East	>=0.50
	West	>=0.50

	a. For the north orientation, a vertical projection located on the west-edge of the fenestration with the equivalent of PF>=0.15 shall also satisfy the minimum projection factor requirement.
	N1102.2.4 (R402.2.4) Access hatches and doors. Access doors from conditioned spaces to unconditioned spaces such as attics and crawl spaces shall be weatherstripped and insulated to a level equivalent to the insulation on the surrounding surfaces. Access shall be provided to all equipment that prevents damaging or compressing the insulation. A wood-framed or equivalent baffle or retainer is required to be provided when loose-fill insulation is installed, the purpose of which is to prevent the loose-fill insulation from spilling into the living space when the attic access is opened, and to provide the permanent means of maintaining the installed R-value of the loose-fill insulation.
	Exception: Vertical doors that provide access from the conditioned to unconditioned spaces shall be permitted to meet the fenestration requirements of Table R1102.1.2 based on the applicable climate zone specified in Chapter 3.
	N1102.4 (R402.4) Air leakage (Mandatory). The building thermal envelope shall may be designed and constructed to limit air leakage in accordance with the requirements of Sections R1102.4.1 through R1102.4.4.
	N1102.4.1 (R402.4.1) Building thermal envelope. The building thermal envelope shall comply with Sections N1102.4.1.1 and N1102.4.1.2. The sealing methods between dissimilar materials shall allow for differential expansion and contraction.
	N1102.4.1.1 (R402.4.1.1) Installation. The components of the building thermal envelope as listed in Table N1102.4.1.1 shall be installed in accordance with the manufacturer's instructions and the criteria listed in Table N1102.4.1.1, as applicable to the method of construction. Where required by the Building Official, an approved third party shall inspect all components and verify compliance.
	N1102.4.1.2 (R402.4.1.2) Testing. The Any building or dwelling unit shall may be tested and verified as having an air leakage rate of not exceeding five (5) air changes per hour in Climate Zones 1 and 2, and three air changes per hour in Climate Zones 3 through 8 Zone 4. Testing shall be conducted in accordance with ASTM E 779 or ASTM E 1827 and reported at a pressure of two-tenths (0.2) inches w.g. (50 Pascals). Where required by the Code Official, testing shall be conducted by an approved third party. A written report of the results of the test shall be signed by the party conducting the test and provided to the Code Official. Testing shall be performed at any time after creation of all penetrations of the building thermal envelope.
	During testing:
	1. Exterior windows and doors, fireplace and stove doors shall be closed, but not sealed, beyond the intended weatherstripping or other infiltration control measures.
	2. Dampers including exhaust, intake, makeup air, backdraft and flue dampers shall be closed, but not sealed beyond intended infiltration control measures.
	3. Interior doors, if installed at the time of the test, shall be open.
	4. Exterior doors for continuous ventilation systems and heat recovery ventilators shall be closed and sealed.
	5. Heating and cooling systems, if installed at the time of the test, shall be turned off.
	6. Supply and return registers, if installed at the time of the test, shall be fully open.

Table N1102.4.1.1 (402.4.1.1)
Air Barrier and Insulation Installation
Component	Air-Barrier Criteria	Insulation Installation Criteria
General Requirements	A continuous air barrier shall be installed in the building envelope. The exterior thermal envelope contains a continuous air barrier. Breaks or joints in the air barrier shall be sealed.	Air permeable insulation shall not be used as a sealing material.
Ceiling/attic	The air barrier in any dropped ceiling/soffit shall be aligned with the insulation and any gaps in the air barrier sealed. Access openings, drop down stairs or knee wall doors to unconditioned attic spaces shall be sealed.	The insulation in any dropped ceiling/soffit shall be aligned with the air barrier.
Walls	The junction of the foundation and sill plate shall be sealed. The junction of the top plate and the top of the exterior walls shall be sealed. Knee walls shall be sealed.	Cavities within corners and headers of frame walls shall be insulated by completely filling the cavity with a material having a thermal resistance of R-3 per inch minimum. Exterior thermal envelope insulation for framed walls shall be installed in substantial contact and continuous alignment with the air barrier.
Windows, skylights and doors	The space between window/door jambs and framing, and skylights and framing shall be sealed.
Rim joists	Rim joists shall include the air barrier.	Rim joists shall be insulated.
Floors (including above garage and cantilevered floors)	The air barrier shall be installed at any exposed edge of insulation.	Floor framing cavity insulation shall be installed to maintain permanent contact with the underside of subfloor decking, or floor framing cavity insulation shall be permitted to be in contact with the top side of sheathing, or continuous insulation installed on the underside of floor framing; and extends from the bottom to the top of all perimeter floor framing members.
Crawl space walls	Exposed earth in unvented crawl spaces shall be covered with Class I vapor retarder with overlapping joists taped.	Where provided instead of floor insulation, insulation shall be permanently attached to the crawl space walls.
Shafts, penetrations	Duct shafts, utility penetrations, and flue shafts opening to exterior or unconditioned space shall be sealed.
Narrow cavities		Batts in narrow cavities shall be cut to fit, or narrow cavities shall be filled by insulation that on installation readily conforms to the available cavity space.
Garage separation	Air sealing shall be provided between the garage and conditioned spaces.
Recessed lighting	Recessed light fixtures installed in the building thermal envelope shall be sealed to the drywall.	Recessed light fixtures installed in the building thermal envelope shall be air tight and IC rated.
Plumbing and wiring		Batt insulation shall be cut neatly to fit around wiring and plumbing in exterior walls, or insulation that on installation readily conforms to available space shall extend behind piping and wiring.
Shower/tub on exterior wall	The air barrier installed at exterior walls adjacent to showers and tubs shall separate them from showers and tubs.	Exterior walls adjacent to showers and tubs shall be insulated.
Electrical/phone box on exterior walls	The air barrier shall be installed behind electrical or communication boxes or air sealed boxes shall be installed.
HVAC register boots	HVAC register boots that penetrate building thermal envelope shall be sealed to the subfloor or drywall.
Concealed sprinklers	When required to be sealed, concealed fire sprinklers shall only be sealed in a manner that is recommended by the manufacturer. Caulking or other adhesive sealants shall not be used to fill voids between fire sprinkler cover plates and walls or ceilings.

	a. In addition, inspection of log walls shall be in accordance with the provisions of ICC 400.
	N1102.4.4 (R402.4.4) Rooms containing fuel-burning appliances. In Climate Zones 3 through 8, where open combustion air ducts provide combustion air to open combustion fuel-burning appliances, the appliances and combustion air opening shall be located outside the building thermal envelope or enclosed in a room, isolated from inside the thermal envelope. Such rooms shall be sealed and insulated in accordance with the envelope requirements of Table N1102.1.2, where the walls, floors and ceilings shall meet a minimum of the basement wall R-value requirement. The door into the room shall be fully gasketed and any water lines and ducts in the room insulated in accordance with Section N1103. The combustion air duct shall be insulated where it passes through conditioned space to a minimum of R-8.
	Exceptions:
	1. Direct vent appliances with both intake and exhaust pipes installed continuous to the outside.
	2. Fireplaces and stoves complying with Sections N1102.4.2 and R1006.
	3. Mechanical equipment in an unfinished space.
	N1102.4.5 (R402.4.5) Recessed lighting. Recessed luminaires installed in the building thermal envelope shall may be sealed to limit air leakage between conditioned and unconditioned spaces. All recessed luminaires shall may be IC-rated and labeled as having an air leakage rate not more than 2.0 cfm (0.944 L/s) when tested in accordance with ASTM E 283 at a 1.57 psf (75 Pa) pressure differential. All recessed luminaires shall may be sealed with a gasket or caulk between the housing and interior wall or ceiling covering.
	N1103.1.1 (R403.1.1) Programmable thermostat. The thermostat controlling the primary heating or cooling system of the dwelling unit shall be capable of controlling the heating and cooling system on a daily schedule to maintain different temperature set points at different times of the day. This thermostat shall include the capability to set back or temporarily operate the system to maintain zone temperatures down to fifty-five degrees Fahrenheit (55° F.) (13° C.) or up to eighty-five degrees Fahrenheit (85° F.) (29° C.). The thermostat shall initially be programmed by the manufacturer with a heating temperature set point no higher than seventy degrees Fahrenheit (70° F.) (21° C.) and a cooling temperature set point no lower than seventy-eight degrees Fahrenheit (78° F.) (26° C.).
	N1103.3.3 (R403.3.3) Duct testing (Mandatory). Ducts shall be pressure tested to determine air leakage by one (1) of the following methods:
	1. Rough in test: Total leakage shall be measured with a pressure differential of 0.1 inch w.g. (25 Pa) across the system, including the manufacturer's air handler enclosure if installed at the time of the test. All registers shall be taped or otherwise sealed during the test.
	2. Postconstruction test: Total leakage shall be measured with a pressure differential of one-tenth (0.1) inch w.g. (25 Pa) across the entire system, including the manufacturer's air handler enclosure. Registers shall be taped or otherwise sealed during the test.
	Exception: A duct air leakage test shall not be required where ducts and air handlers are located entirely within the building thermal envelope.
	A written report of the results of the test shall be signed by the party conducting the test and provided to the code official.
	N1103.3.5 (R403.3.5) Building cavities (Mandatory). Building framing cavities shall not be used as ducts or plenums.
	N1103.4.1 (R403.4.1) Protection of piping insulation. Piping insulation exposed to weather shall be protected from damage, including that caused by sunlight, moisture, equipment maintenance and wind, and shall provide shielding from solar radiation that can cause degradation of the material. Adhesive tape shall not be permitted.
	N1103.6 (R403.6) Mechanical ventilation (Mandatory). The building shall be provided with ventilation that meets the requirements of Section M1507 of this code or the International Mechanical Code, as applicable, or with other approved means of ventilation. Outdoor air intakes and exhausts shall have automatic or gravity dampers that close when the ventilation system is not operating.
	N1103.6.1 (R403.6.1) Whole house mechanical ventilation system fan efficacy. Mechanical ventilation system fans shall meet the efficacy requirements of Table N1103.6.1.
	Exception: Where mechanical ventilation fans are integral to tested and listed HVAC equipment, they shall be powered by an electronically commutated motor.

Table N1103.6.1 (R403.6.1)
Mechanical Ventilation System Fan Efficacy
Fan Location	Air Flow Rate Minimum (cfm)	Minimum Efficacy (cfm/watt)	Air Flow Rate Maximum (cfm)
Range hoods	Any	2.8 cfm/watt	Any
In-line fan	Any	2.8 cfm/watt	Any
Bathroom, utility room	10	1.4 cfm/watt	<90
Bathroom, utility room	90	2.8 cfm/watt	Any
For SI: one cubic foot per minute = 28.3 L/min.

	N1103.7 (R403.7) Equipment sizing and efficiency rating (Mandatory). Heating and cooling equipment shall be sized in accordance with ACCA Manual S based on building loads calculated in accordance with ACCA Manual J or other approved heating and cooling calculation methodologies. New or replacement heating and cooling equipment shall have an efficiency rating equal to or greater than the minimum required by Federal law for the geographic location where the equipment is installed.
	N1104 (R404) Electrical Power and Lighting Systems (Mandatory)
	N1104.1 (R404.1) Lighting equipment (Mandatory). Not less than seventy-five percent (75%) of the lamps in permanently installed lighting fixtures shall be high efficacy lamps or not less than seventy-five percent (75%) of the permanently installed lighting fixtures shall contain only high efficacy lamps.
	Exception: Low voltage lighting.
	N1104.1.1 (R404.1.1) Lighting equipment (Mandatory). Fuel gas lighting systems shall not have continuously burning pilot lights.

Table N1105.5.2(1) [R405.5.2(1)]
Specifications for the Standard Reference and Proposed Designs
Building Component	Standard Reference Design	Proposed Design
Above-grade walls	Type: mass wall if proposed wall is mass; otherwise wood frame	As proposed
	Gross area: same as proposed	As proposed
	U-factor: as specified in Table N1102.1.4	As proposed
	Solar absorptance = 0.75	As proposed
	Remittance = 0.90	As proposed
Basement and crawl space walls	Type: same as proposed	As proposed
	Gross area: same as proposed	As proposed
	U-factor: from Table N1102.1.4, with insulation layer on interior side of walls	As proposed
Above-grade floors	Type: wood frame	As proposed
	Gross area: same as proposed	As proposed
	U-factor: as specified in Table N1102.1.4	As proposed
Ceilings	Type: wood frame	As proposed
	Gross area: same as proposed	As proposed
	U-factor: as specified in Table N1102.1.4	As proposed
Roofs	Type: composition shingle on wood sheathing	As proposed
	Gross area: same as proposed	As proposed
	Solar absorptance = 0.75	As proposed
	Emittance = 0.90	As proposed
Attics	Type: vented with aperture = 1 ft² per 300 ft² ceiling area	As proposed
Foundations	Type: same as proposed	As proposed
	Foundation wall area above and below grade and soil characteristics: same as proposed	As proposed
Opaque doors	Area: 40 ft²	As proposed
	Orientation: North	As proposed
	U-factor: same as fenestration from Table N1102.1.4	As proposed
Vertical fenestration other than opaque doors	Total area^b = a) The proposed glazing area, where the proposed glazing area is less than 15 percent (15%) of the conditioned floor area b) Fifteen percent (15%) of the conditioned floor area, where the proposed glazing area is fifteen percent (15%) or more of the conditioned floor area	As proposed
	Orientation: equally distributed to four cardinal compass orientations (N, E, S and W)	As proposed
	U-factor: as specified in Table N1102.1.4	As proposed
	SHGC: as specified in Table N1102.1.2 except that for climates with no requirement (NR) SHGC = 0.40 shall be used	As proposed
	Interior shade fraction: 0.92 - (0.21 x SHGC for the standard reference design)	0.92 - (0.21 x SHGC as proposed)
	External shading: none	As proposed
Skylights	None	As proposed
Thermally isolated sunrooms	None	As proposed
Air exchange rate	Air leakage rate of 5 air changes per hour in Climate Zone 4 1 and 2, and 3 air changes per hour in Climate Zones 3 through 8 at a pressure of 0.2 inches w.g. (50 Pa). The mechanical ventilation rate shall be in addition to the air leakage rate and the same as in the proposed design, but no greater than 0.01 x CFA + 7.5 x (N_br + 1) where: CFA = conditioned floor area N_br = number of bedrooms Energy recovery shall not be assumed for mechanical ventilation	For residences that are not tested, the same air leakage rate as the standard reference design. For tested residences, the measured air exchange rate^a. The mechanical ventilation rate ^b shall be in addition to the air leakage rate and shall be proposed.
Mechanical ventilation	None, except where mechanical ventilation is specified by the proposed design, in which case: Annual vent fan energy use: kWh/yr = 0.03942 x CFA + 29.565 x (N_br +1) where: CFA = conditioned floor area N_br = number of bedrooms	As proposed
Internal gains	IGain = 17,900 + 23.8 x CFA + 4104 x N_br (Btu/day per dwelling unit)	Same as standard reference design.
Internal mass	An internal mass for furniture and contents of 8 pounds per square foot of floor area	Same as standard reference design, plus any additional mass specifically designed as a thermal storage element^c but not integral to the building envelope or structure.
Structural mass	For masonry floor slabs, 80% of floor area covered by R-2 carpet and pad, and 20% of floor directly exposed to room air	As proposed
	For masonry basement walls, as proposed, but with insulation required by Table R402.1.4 located on the interior side of the walls	As proposed
	For other walls, for ceilings, floors, and interior walls, wood frame construction	As proposed
Heating systems^{d, e}	As proposed for other than electric heating without a heat pump, where the proposed design utilizes electric heating without a heat pump the standard reference design shall be an air source heat pump meeting the requirements of Section C403 of the IECC Commercial Provisions. Fuel type: same as the proposed design Efficiencies: Electric: air-source heat pump with prevailing Federal minimum standards Non-electric furnaces: natural gas furnace with prevailing Federal minimum standards Non-electric boilers: natural gas boiler with prevailing Federal minimum standards Capacity: sized in accordance with Section N1103.7	As proposed
Cooling systems^{d, f}	As proposed Fuel type: electric Efficiency: in accordance with prevailing Federal minimum standards Capacity: sized in accordance with Section N1103.7	As proposed
Service water heating^{d, e, f}	As proposed Use: same as proposed design Fuel type: same as proposed design Efficiency: in accordance with prevailing Federal minimum standards Use: gal/day = 30 + 10 x N_br Tank temperature: 120° F.	As proposed Gal/day = 30 + (10 x N) Same as standard reference
Thermal distribution systems	Duct insulation: from Section N1103.2.1 A thermal distribution system efficiency (DSE) of 0.88 shall be applied to both the heating and cooling system efficiencies for all systems other than tested duct systems. For tested duct systems, the leakage rate shall be 4 cfm (113.3 L/min) per 100 ft² (9.29 m²) of conditioned floor area at a pressure of differential of one tenth (0.1) inches w.g. (25 Pa)	As tested or specified in Table R405.5.2(2) if not tested. Duct insulation shall be as proposed.
Thermostat	Type: Manual, cooling temperature setpoint = 75° F.; Heating temperature setpoint = 72° F.	Same as standard reference

For SI: 1 square foot = 0.93 m², 1 British thermal unit = 1055 J, 1 pound per square foot = 4.88 kg/m², 1 gallon (US) = 3.785 L, ° C. = (° F.-32)/1.8, 1 degree = 0.79 rad

	a. Where required by the Code Official, testing shall be conducted by an approved party. Hourly calculations as specified in the ASHRAE Handbook of Fundamentals, or the equivalent, shall be used to determine the energy loads resulting from infiltration.
	b. The combined air exchange rate for infiltration and mechanical ventilation shall be determined in accordance with Equation 43 of 2001 ASHRAE Handbook of Fundamentals, page 26.24, and the "Whole-house Ventilation" provisions of 2001 ASHRAE Handbook of Fundamentals, page 26.19, for intermittent mechanical ventilation.
	c. "Thermal storage element" shall mean a component not part of the floors, walls or ceilings that is part of a passive solar system, and that provides thermal storage such as enclosed water columns, rock beds, or phase-change containers. A thermal storage element must be in the same room as fenestration that faces within fifteen degrees (15°) (0.26 rad) of true south, or must be connected to such a room with pipes or ducts that allow the element to be actively charged.
	d. For a proposed design with multiple heating, cooling or water heating systems using different fuel types, the applicable standard reference design system capacities and fuel types shall be weighted in accordance with their respective loads as calculated by accepted engineering practice for each equipment and fuel type present.
	e. For a proposed design without a proposed heating system, a heating system with the prevailing Federal minimum efficiency shall be assumed for both the standard reference design and proposed design.
	f. For a proposed design home without a proposed cooling system, an electric air conditioner with the prevailing Federal minimum efficiency shall be assumed for both the standard reference design and the proposed design.
	g. For a proposed design with a non-storage-type water heater, a forty-gallon storage-type water heater with the prevailing Federal minimum energy factor for the same fuel as the predominant heating fuel type shall be assumed. For the case of a proposed design without a proposed water heater, a forty-gallon storage-type water heater with the prevailing Federal minimum efficiency for the same fuel as the predominant heating fuel type shall be assumed for both the proposed design and standard reference design.
	M1301.2 Identification. Each length of pipe and tubing and each pipe fitting utilized in a mechanical system shall bear the identification of the manufacturer.
	M1301.3 Installation of materials. Materials shall be installed in strict accordance with the standards under which the materials are accepted and approved. In the absence of such in tallation procedures, the manufacturer's instructions shall be followed. Where the requirements of referenced standards or manufacturer's instructions do not conform to minimum provisions of this code, the provisions of this code shall apply.
	M1301.4 Plastic pipe, fittings and components. Plastic pipe, fittings and components shall be third-party certified as conforming to NSF 14.
	M1301.5 Third-party testing and certification. Piping, tubing and fittings shall comply with the applicable referenced standards, specifications and performance criteria of this code and shall be identified in accordance with Section M1301.2. Piping, tubing and fittings shall either be tested by an approved third-party testing agency or certified by an approved third-party certification agency.
	M1305.1.4.1 Ground clearance. Equipment and appliances supported from the ground shall be level and firmly supported on a concrete slab or other approved material extending not less than 3 two (2) inches (76 50.8 mm) above the adjoining ground. Such support shall be in accordance with the manufacturer's installation instructions. Appliances suspended from the floor shall have a clearance of not less than six (6) inches (152 mm) from the ground.
	M1305.1.4.3 Electrical requirements. A luminaire controlled by a switch located at the required passageway opening and a receptacle outlet shall be installed at or near the appliance location in accordance with Chapter 39. Exposed lamps shall be protected from damage by location or lamp guards.
	Exception: Basements.
	M1307.2 Anchorage of appliances. Appliances designed to be fixed in position shall be fastened or anchored in an approved manner. In Seismic Design Categories D_0, D₁ and D₂, and in townhouses in Seismic Design Category C, water heaters and thermal storage units shall be anchored or strapped to resist horizontal displacement caused by earthquake motion in accordance with one of the following:
	1. Anchorage and strapping shall be designed to resist a horizontal force equal to one-third (1/3) of the operating weight of the water heater storage tank, acting in any horizontal direction. Strapping shall be at points within the upper one-third (1/3) and lower one-third (1/3) of the appliance's vertical dimensions. At the lower point, the strapping shall maintain a minimum distance of four (4) inches (102 mm) above the controls.
	2. The anchorage strapping shall be in accordance with the appliance manufacturer's recommendations.
	M1401.3 Equipment and appliance sizing. Heating and cooling equipment and appliances shall be sized in accordance with ACCA Manual S or other approved sizing methodologies based on building loads calculated in accordance with ACCA Manual J or other approved heating and cooling calculation methodologies.
	Exception: Heating and cooling equipment and appliance sizing shall not be limited to the capacities determined in accordance with Manual S where either of the following conditions applies:
	1. The specified equipment or appliance utilizes multistage technology or variable refrigerant flow technology, and the loads calculated in accordance with the approved heating and cooling calculation methodology are within the range of the manufacturer's published capacities for that equipment or appliance.
	2. The specified equipment or appliance manufacturer's published capacities cannot satisfy both the total and sensible heat gains calculated in accordance with the approved heating and cooling calculation methodology and the next larger standard size unit is specified.
	M1411.3.1 Auxiliary and secondary drain systems. In addition to the requirements of Section M1411.3, a secondary drain or auxiliary drain pan shall be required for each cooling or evaporator coil where damage to any building components will occur as a result of overflow from the equipment drain pan or stoppage in the condensate drain piping. Such piping shall maintain a minimum horizontal slope in the direction of discharge or not less than 1/8 unit vertical in 12 units horizontal (one-percent slope). Drain piping shall be not less than three-quarter-inch (19 mm) nominal pipe size. One of the following methods shall be used:
	1. An auxiliary drain pan with a separate drain shall be installed under the coils on which condensation will occur. The auxiliary pan drain shall discharge to a conspicuous point of disposal to alert occupants in the event of a stoppage of the primary drain. The pan shall have a minimum depth of one and five-tenths (1.5) inches (38 mm), shall be not less than three (3) inches (76 mm) larger than the unit or the coil dimensions in width and length and shall be constructed of corrosion-resistant material. Galvanized sheet steel pans shall have a minimum thickness of not less than 0.0236 inch (0.6010 mm) (No. 24 26 Gage). Non-metallic pans shall have a minimum thickness of not less than 0.0625 inch (1.6 mm).
	M1501.1 Outdoor discharge. The air removed by every mechanical exhaust system shall be discharged to the outdoors in accordance with Section M1506.2. Air shall not be exhausted into an attic, soffit, ridge vent or crawl space.
	Exception: Whole-house ventilation-type attic fans that discharge into the attic space of dwelling units having private attics shall be permitted.
	M1502.4.1 Material and size. Exhaust ducts shall have a smooth interior finish and be constructed of metal having a minimum thickness of 0.0157 inch (0.3950 mm) (No. 28 30 gage). The duct shall be four (4) inches (102 mm) nominal in diameter.
	M1502.4.2 Duct installation. Exhaust ducts shall be supported at intervals not to exceed twelve (12) feet (3,658 mm) and shall be secured in place. The insert end of the duct shall extend into the adjoining duct or fitting in the direction of airflow. Exhaust duct joints shall be sealed in accordance with Section M1601.4.1 and shall be mechanically fastened. Ducts shall not be joined with screws or similar fasteners that protrude more than 1/8 inch (3.2 mm) into the inside of the duct.
	M1502.4.5.1 Specified length. The maximum length of the exhaust duct shall be thirty-five (35) feet (10,688 mm) from the connection to the transition duct from the dryer to the outlet terminal. Where fittings are used, the maximum length of the exhaust duct shall be reduced in accordance with Table M1502.4.5.1. The maximum length of the exhaust duct does not include the transition duct.
	Exception: The maximum developed length may be extended to fifty-five (55) feet if clearly labeled cleanouts are provided within twelve (12) inches of the second elbow, at every elbow thereafter, and at least every fifteen (15) feet of developed length thereafter.
	M1503.4 Makeup air required. Exhaust hood systems capable of exhausting in excess of 400 six hundred (600) cubic feet per minute (0.19 m³/s) shall be mechanically or naturally provided with makeup air at a rate approximately equal to the exhaust air rate. Such makeup air systems shall be equipped with not less than one (1) damper. Each damper shall be a gravity damper or an electrically operated damper that automatically opens when the exhaust system operates. Dampers shall be accessible for inspection, service, repair and replacement without removing permanent construction or any other ducts not connected to the damper being inspected, serviced, repaired or replaced. Such makeup air systems shall be equipped with a means of closure and shall be automatically controlled to start and operate simultaneously with the exhaust system.
	M1506.3 Exhaust openings. Air exhaust openings shall terminate not less than three (3) feet (914 mm) from property lines; three (3) feet (914 mm) from operable and nonoperable openings into the building and ten (10) feet (3,048 mm) from mechanical air intakes except where the opening is located three (3) feet (914 mm) above the air intake. Openings shall comply with Sections R303.5.2 and R303.6.
	M1601.1 Duct design. Duct systems serving heating, cooling and ventilation equipment shall be installed in accordance with the provisions of this Section, and ACCA Manual D the appliance manufacturer's installation instructions or other approved methods.
	M1601.1.1 Above-ground duct systems. Above-ground duct systems shall conform to the following:
	1. Equipment connected to duct systems shall be designed to limit discharge air temperature to not greater than 250° F. (121° C.).
	2. Factory-made ducts shall be listed and labeled in accordance with UL 181 and installed in accordance with the manufacturer's instructions.
	2. Fibrous glass duct construction shall conform to the SMACNA Fibrous Glass Duct Construction Standards or NAIMA Fibrous Glass Duct Construction Standards.
	3. Field-fabricated and shop-fabricated metal and flexible duct constructions shall conform to the SMACNA HVAC Duct Construction Standards - Metal and Flexible except as allowed by Table M1601.1.1. Galvanized steel shall conform to ASTM A 653.
	4. The use of gypsum products to construct return air ducts or plenums is permitted, provided that the air temperature does not exceed 125° F. (52° C.) and exposed surfaces are not subject to condensation.
	5. Duct systems shall be constructed of materials having a flame spread index of not greater than 200.
	6. Stud wall cavities and the spaces between solid floor joists to be used as non-ducted air plenums shall comply with the following conditions:
	6.1. These cavities or spaces shall not be used as a plenum for air supply.
	6.2. These cavities or spaces shall not be a part of required fire-resistance-rated assembly.
	6.3. Stud wall cavities shall not convey air from more than one floor level.
	6.4. Stud wall cavities and joist-space plenums shall be isolated from adjacent concealed spaces by tight-fitting fireblocking in accordance with Section R602.8.
	6.5. Stud wall cavities in the outside walls of building envelope assemblies shall not be utilized as air plenums.

Table M1601.1.1
Duct Construction Minimum Sheet Metal Thickness for Single Dwelling Units^a
Round Duct Diameter (inches)	Static Pressure
	1/2-inch Water Gage		1-inch Water Gage
	Thickness (inches)		Thickness (inches)
	Galvanized	Aluminum	Galvanized	Aluminum
<12	0.013	0.018	0.013	0.018
12 to 14	0.013	0.018	0.016	0.023
15 to 17	0.016	0.023	0.019	0.027
18	0.016	0.023	0.024	0.034
19 to 20	0.019	0.027	0.024	0.034

Rectangular Duct Dimension (largest dimension)	Static Pressure
	1/2-inch Water Gage		1-inch Water Gage
	Thickness (inches)		Thickness (inches)
	Galvanized	Aluminum	Galvanized	Aluminum
<8	0.013	0.018	0.013	0.018
9 to 10	0.013	0.018	0.016	0.023
11 to 12	0.016	0.023	0.019	0.027
13 to 16	0.019 0.016	0.027	0.019	0.027
17 to 18	0.019	0.027	0.024	0.034
19 to 20	0.024 0.019	0.034	0.024	0.034

For SI: 1 inch = 25.4 mm, 1 inch water gage = 249 Pa.

	M1601.4.1 Joints, seams and connections. Joints of duct systems shall be made substantially airtight in an unconditioned area by means of tapes, mastics, liquid sealants, gasketing or other approved closure systems. Closure systems used with rigid fibrous glass ducts shall comply with UL 181A and shall be marked 181A-P for pressure-sensitive tape, 181A-M for mastic or 181A-H for heat-sensitive tape. Closure systems used with flexible air ducts and flexible air connectors shall comply with UL 181B and shall be marked 181B-FX for pressure-sensitive tape or 181B-M for mastic. Duct connections to flanges of air distribution system equipment or sheet metal fittings shall be mechanically fastened. Mechanical fasteners for use with flexible non-metallic air ducts shall comply with UL 181B and shall be marked 181B-C. Crimp joints for round metal ducts shall have a contact lap of at least one and one-half (1 1/2) means of at least three sheet metal screws or rivets equally spaced around the joint. Closure systems used to seal metal ductwork shall be installed in accordance with the manufacturer's installation instructions.
	Longitudinal and transverse joints, seams and connections in metallic and nonmetallic ducts shall be constructed as specified in SMACNA HVAC Duct Construction Standards Metal and Flexible and NAIMA Fibrous Glass Duct Construction Standards. Joints, longitudinal and transverse seams, and connections in ductwork shall be securely fastened and sealed with welds, gaskets, mastics (adhesives), mastic plus embedded fabric systems, liquid sealants or tapes. Tapes and mastics used to seal fibrous glass ductwork shall be listed and labeled in accordance with UL 181A and shall be marked "181A P" for pressure-sensitive tape, "181A-M" for mastic or "181A-H" for heat sensitive tape.
	Tapes and mastic used to seal metallic and flexible air ducts and flexible air connectors shall comply with UL 181B and shall be marked "181B-FX" for pressure-sensitive tape or "181B-M" for mastic. Duct connections to flanges of air distribution system equipment shall be sealed and mechanically fastened. Mechanical fasteners for use with flexible nonmetallic air ducts shall comply with UL 181B and shall be marked 181 B-C. Crimp joints for round metallic ducts shall have a contact lap of not less than one (1) inch (25 mm) and shall be mechanically fastened by means of not less than three sheet metal screws or rivets equally spaced around the joint.
	Closure systems used to seal all ductwork shall be installed in accordance with the manufacturer's instructions.
	Exceptions:
	1. Spray polyurethane foam shall be permitted to be applied without additional joint seals.
	2. Where a duct connection is made that is partially inaccessible, three (3) screws or rivets shall be equally spaced on the exposed portion of the joint so as to prevent a hinge effect.
	3. For ducts having a static pressure classification of less than two (2) inches of water column (500 Pa), additional closure systems shall not be required for continuously welded joints and seams and locking type joints and seams of other than snap lock and button-lock types.
	Continuously welded and locking-type longitudinal joints and seams in ducts operating at static pressure less than two (2) inches of water column (500 Pa) pressure classification shall not require additional closure systems.
	M1602.2 Return air openings. Return air openings for heating, ventilation and air conditioning systems shall comply with all of the following:
	1. Openings shall not be located less than ten (10) feet (3,048 mm) measured in any direction from an open combustion chamber or draft hood of another appliance located in the same room or space.
	2. The amount of return air taken from any room or space shall be not greater than the flow rate of supply air delivered to such room or space.
	2. Return and transfer openings shall be sized in accordance with the appliance or equipment manufacturers' installation instructions, Manual D or the design of the registered design professional.
	3. Return air shall not be taken from a closet, bathroom, toilet room, kitchen, garage, mechanical room, boiler room, furnace room or unconditioned attic.
	Exceptions:
	1. Taking return air from a kitchen is not prohibited where such return air openings serve the kitchen only, and are located not less than ten (10) feet (3,048 mm) from the cooking appliances.
	2. Dedicated forced-air systems serving only the garage shall not be prohibited from obtaining return air from the garage.
	3. Taking return air from an unconditioned crawl space shall not be accomplished through a direct connection to the return side of a forced-air furnace. Transfer openings in the crawl space enclosure shall not be prohibited.
	4. Return air from one dwelling unit shall not be discharged into another dwelling unit.
	G2408.4 (305.7) Clearances from grade. Equipment and appliances installed at grade level shall be supported on a level concrete slab or other approved material extending not less than two (2) inches (76 50.8 mm) above adjoining grade or shall be suspended not less than six (6) inches (152 mm) above adjoining grade. Such supports shall be installed in accordance with the manufacturer's installation instructions.
	G2409.1 (308.1) Scope. This Section shall govern the reduction in required clearances to combustible materials, including gypsum board, and combustible assemblies for chimneys, vents, appliances, devices and equipment. Clearance requirements for air-conditioning equipment and central heating boilers and furnaces shall comply with Sections G2409.3 and G2409.4.
	G2412.9 (401.9) Identification. Each length of pipe and tubing and each pipe fitting, utilized in a fuel gas system, shall bear the identification of the manufacturer.
	G2412.10 (401.10) Third-party testing and certification. Piping, tubing and fittings shall comply with the applicable referenced standards, specifications and performance criteria of this code and shall be identified in accordance with Section G2412.9. Piping, tubing and fittings shall either be tested by an approved third-party testing agency or certified by an approved third-party certification agency.
	G2415.3 (404.3) Prohibited locations. Piping shall not be installed in or through a ducted supply, return or exhaust, or a clothes chute, chimney or gas vent, dumbwaiter or elevator shaft. Piping installed downstream of the point of delivery shall not extend through any townhouse unit other than the unit served by such piping.
	G2428.3.16 (504.3.20) Chimney and vent locations. Tables G2428.3(1), G2428.3(2), G2428.3(3) and G2428.3(4) shall be used only for chimneys and vents not exposed to the outdoors below the roof line. A Type B vent or listed chimney lining system passing through an unused masonry chimney flue shall not be considered to be exposed to the outdoors. Where vents extend outdoors above the roof more than five (5) feet (1,524 mm) higher than required by Figure G2427.6.3 and where vents terminate in accordance with the Section G2427.6.3, Item 2, the outdoor portion of the vent shall be enclosed as required by this section for vents not considered to be exposed to the outdoors or such venting system shall be engineered. A Type B vent shall not be considered to be exposed to the outdoors where it passes through an unventilated enclosure or chase insulated to a value of not less than R8.
	G2439.7.4.1 (614.8.4.1) Specified length. The maximum length of the exhaust duct shall be 35 feet (10,688 mm) from the connection to the transition duct from the dryer to the outlet terminal. Where fittings are used, the maximum length of the exhaust duct shall be reduced in accordance with Table G2439.7.4.1. The maximum length of the exhaust duct does not include the transition duct.
	Exception: The maximum developed length may be extended to fifty-five (55) feet if clearly labeled cleanouts are provided within twelve (12) inches of the second elbow, at every elbow thereafter, and at least every fifteen (15) feet of developed length thereafter.
	G2442.4 (618.4) Prohibited sources. Outdoor or return air for forced-air heating and cooling systems shall not be taken from the following locations:
	1. Closer than ten (10) feet (3,048 mm) from an appliance vent outlet, a vent opening from a plumbing drainage system or the discharge outlet of an exhaust fan, unless the outlet is three (3) feet (914 mm) above the outside air inlet.
	2. Where there is the presence of objectionable odors, fumes or flammable vapors; or where located less than ten (10) feet (3,048 mm) above the surface of any abutting public way or driveway; or where located at grade level by a sidewalk, street, alley or driveway.
	3. A hazardous or insanitary location or a refrigeration machinery room as identified in the International Mechanical Code.
	4. A room or space, the volume of which is less than twenty-five percent (25%) of the entire volume served by such system. Where connected by a permanent opening having an area sized in accordance with Section G2442.2, adjoining rooms or spaces shall be considered as a single room or space for the purpose of determining the volume of such rooms or spaces.
	Exception: The minimum volume requirement shall not apply where the amount of return air taken from a room or space is less than or equal to the amount of supply air delivered to such room or space.
	5. A room or space containing an appliance where such a room or space serves as the sole source of return air.
	Exception: This shall not apply where:
	1. The appliance is a direct-vent appliance or an appliance not requiring a vent in accordance with Section G2425.8.
	2. The room or space complies with the following requirements:
	2.1. The return air shall be taken from a room or space having a volume exceeding one cubic foot for each 10 Btu/h (9.6L/W) of combined input rating of all fuel-burning appliances therein.
	2.2. The volume of supply air discharged back into the same space shall be approximately equal to the volume of return air taken from the space.
	2.3. Return-air inlets shall not be located within ten (10) feet (3,048 mm) of a draft hood in the same room or space or the combustion chamber of any atmospheric burner appliance in the same room or space.
	3. Rooms or spaces containing solid-fuel-burning appliances, provided that return-air inlets are located not less than ten (10) feet (3,048 mm) from the firebox of such appliances.
	6. A closet, bathroom, toilet room, kitchen, garage, boiler room, furnace room or unconditioned attic.
	Exceptions:
	1. Where return air intakes are located not less than ten (10) feet (3,048 mm) from cooking appliances and serve only the kitchen area, taking return air from a kitchen area shall not be prohibited.
	2. Dedicated forced air systems serving only a garage shall not be prohibited from obtaining return air from the garage.
	3. Where a closet is provided with a supply register, taking return air from the closet shall not be prohibited.
	7. A crawl space by means of direct connection to the return side of a forced-air system. Transfer openings in the crawl space enclosure shall not be prohibited.
	P2503.5.1 Rough plumbing. DWV systems shall be tested on completion of the rough piping installation by water or, for piping systems other than plastic, by air without evidence of leakage. Either test shall be applied to the drainage system in its entirety or in sections after rough-in piping has been installed, as follows:
	1. Water test. Each section shall be filled with water to a point not less than five (5) feet (1,524 mm) above the highest fitting connection in that section, or to the highest point in the completed system. Water shall be held in the section under test for a period of fifteen (15) minutes. The system shall prove leak free by visual inspection.
	2. Air test. The portion under test shall be maintained at a gauge pressure of five (5) pounds per square inch (psi) (34 kPa) or ten (10) inches of mercury column (34 kPa). This pressure shall be held without introduction of additional air for a period of fifteen (15) minutes.
	P2603.4 Pipes through foundation walls. A pipe that passes through a foundation wall shall be provided with a relieving arch, or a pipe sleeve shall be built into the foundation wall. The sleeve shall be two (2) pipe sizes greater than the pipe passing through the wall.
	1. In Section P2603.5.1, insert "30" into the first [NUMBER].
	2. In Section P2603.5.1, insert "30" into the second [NUMBER].
	P2690.1 Identification. Each length of pipe and each pipe fitting, trap, fixture, material and device utilized in a plumbing system shall bear the identification of the manufacturer and any markings required by the applicable referenced standards. Nipples created from the cutting and threading of approved pipe shall not be required to be identified.
	Exception: Where the manufacturer identification cannot be marked on pipe fittings and pipe nipples because of the small size of such fittings, the identification shall be printed on the item packaging or on documentation provided with the item.
	P2609.2 Installation of materials. Materials used shall be installed in strict accordance with the standards under which the materials are accepted and approved. In the absence of such installation procedures, the manufacturer's instructions shall be followed. Where the requirements of referenced standards or manufacturer's instructions do not conform to minimum provisions of this code, the provisions of this code shall apply.
	P2609.3 Plastic pipe, fittings and components. Plastic pipe, fittings and components shall be third-party certified as conforming to NSF 14.
	P2609.4 Third-party certification. Plumbing products and materials required by the code to be in compliance with a referenced standard shall be listed by a third-party certification agency as complying with the referenced standards. Products and materials shall be identified in accordance with Section P2609.1.
	P2706.3 Prohibited waste receptors. Plumbing fixtures that are used for washing or bathing shall not be used to receive the discharge of indirect waste piping.
	Exceptions:
	1. A kitchen sink trap is acceptable for use as a receptor for a dishwasher.
	2. A laundry tray is acceptable for use as a receptor for a clothes-washing machine.
	3. A drain or waste pipe above a trap is acceptable for use as a receptor for mechanical equipment condensate drains.
	P2801.8 Water heater seismic bracing. In Seismic Design Categories D₀, D₁ and D₂ and townhouses in Seismic Design Category C, water heaters shall be anchored or strapped in the upper one-third (1/3) and in the lower one-third (1/3) of the appliance to resist a horizontal force equal to one-third (1/3) of the operating weight of the water heater, acting in any horizontal direction, or in accordance with the appliance manufacturer's recommendations.
	P2903.5 Water hammer. The flow velocity of the water distribution system shall be controlled to reduce the possibility of water hammer. A water-hammer arrestor shall be installed where quick-closing valves are used. Water-hammer arrestors shall be installed in accordance with the manufacturer's installation instructions. Water-hammer arrestors shall conform to ASSE 1010.
	P2904.1 General. When installed, the design and installation of residential fire sprinkler systems shall be in accordance with NFPA 13D or Section 2904, which shall be considered equivalent to NFPA 13D. Partial residential sprinkler systems shall be permitted to be installed only in buildings not required to be equipped with a residential sprinkler system. Section P2904 shall apply to stand-alone and multipurpose wet-pipe sprinkler systems that do not include the use of antifreeze. A multipurpose fire sprinkler system shall provide domestic water to both fire sprinklers and plumbing fixtures. A stand-alone sprinkler system shall be separate and independent from the water distribution system. A backflow preventer shall not be required to separate a stand-alone system from the water distribution system.
	R3201.2.1 Trap seal protection. Trap seals of emergency floor drain traps and traps subject to evaporation shall be protected by one of the methods in Sections P3201.2.1.1 through P3201.2.1.4.
	Exception: Basement floor drains with a condensate line draining to it.
	E3609.3 Bonding for other systems. An intersystem bonding termination for connecting intersystem bonding conductors required for other systems shall be provided external to enclosures at the service equipment or metering equipment enclosure and at the disconnecting means for any additional buildings or structures. The intersystem bonding termination shall comply with the following:
	1. It shall be accessible for connection and inspection.
	2. It shall consist of a set of terminals with the capacity for connection of not less than three (3) intersystem bonding conductors.
	3. It shall not interfere with opening of the enclosure for a service, building or structure disconnecting means, or metering equipment.
	4. Where located at the service equipment, it shall be securely mounted and electrically connected to an enclosure for the service equipment, to the meter enclosure, or to an exposed nonflexible metallic service raceway, or shall be mounted at one of these enclosures and connected to the enclosure or to the grounding electrode conductor with a 6 AWG or larger copper conductor.
	5. Where located at the disconnecting means for a building or structure, it shall be securely mounted and electrically connected to the metallic enclosure for the building or structure disconnecting means, or shall be mounted at the disconnecting means and connected to the metallic enclosure or to the grounding electrode conductor with a 6 AWG or larger copper conductor.
	6. It shall be listed as grounding and bonding equipment. (250.94)
	E3701.5.1 Disconnecting means. Each multiwire branch circuit shall may be provided with a means that will simultaneously disconnect all ungrounded conductors at the point where the branch circuit originates. [210.4(B)]
	E3901.2.2 Wall Space. As used in this Section, a wall space shall include the following.
	1. Any space that is two (2) feet or more in width, including space measured around corners, and that is unbroken along the floor line by doorways and similar openings, fireplaces, and fixed cabinets.
	2. The space occupied by fixed panels in exterior walls, excluding sliding panels.
	3. The space created by fixed room dividers such as railings and freestanding bar type counters.
	E3902.2 Garage and accessory building receptacles. 125-volt, single-phase, 15- or 20-ampere receptacles installed in garage and grade-level portions of unfinished accessory buildings used for storage or wok areas shall have ground-fault circuit-interrupter protection for personnel. [210.8(A)(2)]
	Exception: Fastened-in-place appliances or outlets designated for refrigerators/freezers.
	E3902.5 Unfinished basement receptacles. 125-volt, single-phase, 15- and 20-ampere receptacles installed in unfinished basements shall have ground-fault circuit-interrupter protection for personnel. For purposes of this Section, unfinished basements are defined as portions or areas of the basement not intended as habitable rooms and limited to storage areas, work areas, and similar areas. [210.8(A)(5)]
	Exceptions:
	1. A receptacle supplying only a permanently installed fire alarm or burglar alarm system. Receptacles installed in accordance with this exception shall not be considered as meeting the requirements of Section E3901.9.
	2. Fastened-in-place appliances or outlets designated for refrigerators/freezers.
	E3902.6 Kitchen receptacles. 125-volt, single-phase, 15- and 20-ampere receptacles that serve countertop surfaces shall have ground-fault circuit-interrupter protection for personnel. [210.8(A)(6)]
	Exception: Fastened-in-place appliances or outlets designated for refrigerators/freezers.
	E3902.9 Laundry areas. 125 volt, single-phase, 15- and 20-ampere receptacles installed in laundry areas shall have ground-fault circuit-interrupter protection for personnel. [210.8(A)(9)]
	E3902.10 Kitchen dishwasher branch circuit. Ground-fault circuit-interrupter protection shall be provided for outlets that supply dishwashers in dwelling unit locations. [210.8(D)]
	E3902.14 Location of ground-fault circuit interrupters. Ground-fault circuit interrupters shall be installed only in a readily accessible location. [210.8(A)]
	E3902.16 Arc-fault circuit-interrupter protection. Branch circuits that supply 120-volt, single-phase, 15- and 20-ampere outlets installed in kitchens, family rooms, dining rooms, living rooms, parlors, libraries, dens, bedrooms, sunrooms, recreation rooms, closets, hallways, laundry areas and similar rooms or areas shall be protected by any of following: [120.12(a)]
	1. A listed combination-type arc fault circuit interrupter, installed to provide protection of the entire branch circuit. [210.12(A)(1)]
	2. A listed branch/feeder type AFCI installed at the origin of the branch circuit in combination with a listed outlet-branch-circuit-type arc fault circuit interrupter installed at the first outlet box on the branch circuit. The first outlet box in the branch circuit shall be marked to indicate that it is the first outlet of the circuit. [210.12(A)(2)]
	3. A listed supplemental arc protection circuit breaker installed at the origin of the branch circuit in combination with a listed outlet-branch-circuit-type arc fault circuit interrupter installed at the first outlet box on the branch circuit where all of the following conditions are met:
	3.1. The branch circuit wiring shall be continuous from the branch circuit overcurrent device to the outlet-branch-circuit arc fault circuit interrupter.
	3.2. The maximum length of the branch circuit wiring from the branch circuit overcurrent device to the first outlet shall not exceed fifty (50) feet (15.2 m) for 14 AWG conductors and seventy (70) feet (21.3 m) for 12 AWG conductors.
	3.3 The first outlet box in the branch circuit shall be marked to indicate that it is the first outlet of the circuit. [210.12(A)(3)]
	4. A listed outlet-branch-circuit-type arc fault circuit interrupter installed at the first outlet on the branch circuit in combination with a listed branch circuit overcurrent protective device where all of the following conditions are met:
	4.1 The branch circuit wiring shall be continuous from the branch circuit overcurrent device to the outlet-branch-circuit arc fault circuit interrupter.
	4.2 The maximum length of the branch circuit wiring from the branch circuit overcurrent device to the first outlet shall not exceed fifty (50) feet (15.2 m) for 14 AWG conductors and seventy (70) feet (21.3 m) for 12 AWG conductors.
	4.3 The first outlet box in the branch circuit shall be marked to indicate that it is the first outlet on the circuit.
	4.4 The combination of the branch circuit overcurrent device and outlet branch circuit AFCI shall be identified as meeting the requirements for a system combination type AFCI and shall be listed as such. [210.12(A)(4)]
	5. Where metal outlet boxes and junction boxes and RMC, IMC, EMT, Type MC or steel armored Types AC cables meeting the requirements of Section E3908.8, metal wireways or metal auxiliary gutters are installed for the portion of the branch circuit between the branch circuit overcurrent device and the first outlet, a listed outlet branch circuit type AFCI installed at the first outlet shall be considered as providing protection for the remaining portion of the branch circuit. [210.12(A)(5)]
	6. Where a listed metal or nonmetallic conduit or tubing or Type MC cable is encased in not less than two (2) inches (50.8 mm) of concrete for the portion of the branch circuit between the branch circuit overcurrent device and the first outlet, a listed outlet branch circuit type AFCI installed at the first outlet shall be considered as providing protection for the remaining portion of the branch circuit. [210.12(A)(6)]
	Exception: AFCI protection is not required for an individual branch circuit supplying only a fire alarm system where the branch circuit is wired with metal outlet and junction boxes and RMC, IMC, EMT or steel sheathed armored cable Type AC or Type MC meeting the requirements of Section E3908.8.
	E3902.17 Arc-fault circuit interrupter protection for branch circuit extensions or modifications. Where branch circuit wiring is modified, replaced, or extended in any of the areas specified in Section E3902.16, the branch circuit shall be protected by one of the following:
	1. A combination -type AFCI located at the origin of the branch circuit.
	2. An outlet branch circuit type AFCI located at the first receptacle outlet of the existing branch circuit. [210.12(B)]
	Exception: AFCI protection shall not be required where the extension of the existing conductors is not more than six (6) feet (1.8 m) 30 feet (9.5 m) in length and does not include any additional outlets or devices. [210.12(B) Exception]
	E4002.14 Tamper resistant receptacles. In areas specified in Section E3901.1, 125-volt, 15- and 20-ampere receptacles shall be listed tamper-resistant receptacles. [406.12(A)]
	Exception: Receptacles in the following locations shall not be required to be tamper-resistant.
	1. Receptacles located more than 5.5 feet (1,676 mm) above the floor.
	2. Receptacles that are part of a luminaire or appliance.
	3. A single receptacle for a single appliance or a duplex receptacle for two (2) appliances where such receptacles are located in spaces dedicated for the appliances served and, under conditions of normal use, the appliances are not easily moved from one place to another. The appliances shall be cord-and-plug-connected to such receptacles in accordance with Section E3909.4. [406.12(A) Exception]

ORDINANCE No 937A of the City of Troy entitled "2009 International Residential Code" and all other ordinances, laws or parts of ordinances and laws in conflict herewith are hereby repealed.

The City of Troy Building Official is hereby ordered and directed to cause this legislation to be published.

Section 500.036 Adoption of the National Electrical Code (2014).

[R.O. 2006 § 500.036; Ord. No. 981, 12-20-2004; Ord. No. 1110 § 1, 12-21-2009; Ord. No. 1223 §1, 5-17-2016]

A certain document, three (3) copies of which are on file in the office of the Building Official of the City of Troy, being marked and designated as the 2014 National Electrical Code, promulgated as a standard of the National Fire Protection Association, be and is hereby adopted as the electrical code of the City of Troy, in the State of Missouri.

Ordinance No. 981 of the City of Troy entitled "2008 National Electrical Code" and all other ordinances or parts of ordinances in conflict are hereby repealed.

The City of Troy Building Official is hereby ordered and directed to cause this legislation to be published.

Section 500.037 International Swimming Pool and Spa Code (2015).

[Ord. No. 1223 §8, 5-17-2016]

A certain document, three (3) copies of which are on file in the office of the Building Official of the City of Troy, being marked and designated as the International Swimming Pool and Spa Code, 2015 Edition, as published by the International Code Council, be and is hereby adopted as the Pool and Spa Code of the City of Troy, in the State of Missouri, regulating and governing the design, construction, alteration, movement, renovation, replacement, repair and maintenance of swimming pools, spas, hot tubs, aquatic facilities and related equipment as herein provided; providing for the issuance of permits and collection of fees therefor; and each and all of the regulations, provisions, penalties, conditions and terms of said Pool and Spa Code on file in the office of the Building Official are hereby referred to, adopted, and made a part hereof, as if fully set out in this legislation, with the additions, insertions, deletions and changes, if any, prescribed in Subsection (B) of this Section.

The following sections of the International Swimming Pool and Spa Code (2015) are hereby revised:

In Section 101.1, insert "City of Troy" into [NAME OF JURISDICTION].

Section 103 is deleted.

Section 105.6 is deleted.

Section 105.6.1 is deleted.

In Section 105.6.2, insert "Per the Building Permit Fee Schedule (See Table I to Title IV of the Municipal Code of the City of Troy into [JURISDICTION TO INSERT APPROPRIATE SCHEDULE].

In Section 105.6.3, insert "Zero" into second paragraph [SPECIFY PERCENTAGE].

In Section 105.6.3, insert "One hundred" into third paragraph [SPECIFY PERCENTAGE].

In Section 107.4, insert "Proceeding with work without the required inspection" into [SPECIFY OFFENSE].

In Section 107.4, insert "five hundred dollars ($500.00)" into [AMOUNT].

10.

In Section 107.4, insert "Zero" into [NUMBER OF DAYS].

11.

In Section 107.5, insert "Zero" into first [AMOUNT].

12.

In Section 107.5, insert "five hundred dollars ($500.00)" into second [AMOUNT].

13.

Section 108 is deleted.

The City of Troy Building Official is hereby ordered and directed to cause this legislation to be published.

Section 500.040 Penalty.

[R.O. 2006 § 500.040]

Any person violating any of the provisions of this Chapter or any of the Codes adopted in this Chapter shall be deemed guilty of a misdemeanor and upon conviction thereof shall be fined in an amount not exceeding five hundred dollars ($500.00) or be imprisoned in the City or County Jail for a period of not exceeding ninety (90) days, or both such fine and imprisonment. Each day such violation is committed or permitted to continue shall constitute a separate offense and shall be punishable as such hereunder.

Section 500.050 Earthquake and Seismic Design Requirements.

[R.O. 2006 § 500.050]

All construction in the City shall comply with the requirements of Sections 319.200 through 319.207, RSMo., and any amendments thereto, relating to earthquakes and seismic construction requirements.

Section 500.060 Enforcement Official.

[R.O. 2006 § 500.060; Ord. No. 793 § 1, 12-18-1995]

The Building Commissioner shall be the person responsible for the enforcement of the Troy Building Code.

Section 500.070 Buildings and Residences — Address Number Required.

[R.O. 2006 § 500.070; Ord. No. 814 §§ 1—2, 12-16-1996]

Each residence or other structure designed or used for the occupancy of persons shall have placed upon it such numbers or other identifying marks, in such size, area and manner to comply with the requirements of the 911 director of Lincoln County.

Any persons failing to comply with the provisions of this Section shall be guilty of an infraction and shall be subject to a fine not to exceed one hundred dollars ($100.00). The court in its discretion may consider each day of non-compliance as a separate offense and may assess a fine for each such day of non-compliance.

Section 500.080 Depositing Materials on Public Streets Prohibited.

[R.O. 2006 § 500.090; Ord. No. 845 §§ 1—2, 6-15-1998; Ord. No. 845A, 7-17-2000]

It shall be unlawful for any person to engage in any action which causes or permits any solid materials or liquids, including, but not limited to, soil, mud, earth, sand, gravel, stone, or concrete, to be deposited on or in any public street or other property which is subject to current City ordinances.

All vehicles and other equipment leaving construction sites shall use the exits designated for such by the City Engineer. All vehicles and equipment leaving construction sites shall be cleaned prior to leaving the site in a manner, which is sufficient to prevent violation of Subsection (A) of this Section.

In the event solid materials or liquids are deposited on any public street or other property which is subject to current City ordinances by a vehicle or other equipment leaving a construction site, the City shall notify the owner, developer, or general contractor and may issue a stop work order until the solid material or liquid is removed to the satisfactions of the City. If the person or persons notified fail to remove the solid materials or liquids within thirty (30) minutes, the City may remove the solid materials or liquids and shall charge any costs incurred by the City to the person or persons notified. Said costs shall be a debt to the City and shall be due and payable upon notice thereof. No additional building permits shall be issued to an owner, developer, or general contractor who owes the City for the cost of removing solid materials or liquids.

Any person violating the provisions of this Section shall be guilty of a misdemeanor and upon conviction shall be subject to a fine not to exceed five hundred dollars ($500.00) and costs.

Section 500.090 Regulations Concerning Temporary Access Roads and Real Estate Development and Construction.

[R.O. 2006 § 500.100; Ord. No. 848 §§ 1—7, 8-17-1998; Ord. No. 848A, 5-15-2000]

Temporary access shall be provided for all construction sites prior to any land disturbances to minimize curb damage and the amount of earth deposits onto street and/or adjoining properties during construction. Said temporary access shall be in the form of a construction road, or temporary driveway, to be maintained in a clean condition with no mud or standing water in said driveway. For residential lots, driveway is to be rocked at the time of foundation walls back-fill, but no later than subfloor installation and maintained in a clean condition until permanent drive is installed.

When grading operations are completed or suspended for more than thirty (30) days, permanent grass must be established at sufficient density to provide erosion control on the site. Between permanent grass seeding periods, cover shall be provided according to the recommendations in Chapter 525.

All structures requiring a building permit shall be placed a minimum of thirty (30) feet from the top of existing stream banks, this strip shall be part of the platted lots and placement of structures in this area is prohibited. Watercourses shall be maintained and made the responsibility of the subdivision trustees or in the case of a site plan, by the property owner.

Provisions shall be made by the owner or contractor at any construction site to accommodate the increased runoff caused by changed soil and surface conditions during and after grading. Unvegetated open channels shall be designed so that gradients result in velocities more than two (2) fps and less than five (5) fps shall be established in permanent vegetation by use of commercial erosion control blankets or line with rock rip-rap, concrete or other suitable materials as approved by the City Engineer. Detention basins, diversions or other appropriate structures shall be constructed to prevent velocities above five (5) fps (refer to Chapter 525).

Violations. All persons violating this Section shall be issued a citation by the City Police and notice to abate said violation within two (2) days from the date of said notice. Said notice shall be deemed properly served when said notice is posted on the property of said citation notice. All persons failing to comply with such notice to abate said violation shall be deemed in violation of this Section and upon failure to comply with said notice, the City shall cause said violation to be corrected, and the City shall have the authority to revoke building or development permits on said property.

Enforcement Officials. The following City Officials named herein by title hereby have the authority to enforce this Section: the Building Inspector, any officer of the Police Department, Street Supervisor and the City Engineer.

Penalties. Any person violating any provisions of these regulations and found guilty of such violation shall be fined not less than one hundred dollars ($100.00) per offense. Each day said violation continues shall be deemed a separate offense and subject to said fine.

Section 500.100 Rapid Entry System — When Needed.

[R.O. 2006 § 500.120; Ord. No. 912, 8-19-2002]

When deemed necessary for the protection of life or property, the City Building Commissioner may require a rapid entry system be installed on new buildings. Said system shall be approved by an official of the Fire Department.

Section 500.110 Restricting Access to City Streets.

[R.O. 2006 § 500.130; Ord. No. 998 § 1, 9-19-2005]

No person owning property which is outside of the corporate City limits of Troy, Missouri, and is adjacent to a Troy City street, may access any such City street by building or maintaining an entrance onto said City street without the express written consent of the City of Troy.