(CHAPTER 1 ADMINISTRATION)
| ||||
(SECTION R101 GENERAL)
| ||||
R101.1 Title. These
provisions shall be known as the Residential Code for One- and Two-family
Dwellings of the City of O'Fallon, Missouri, and shall be cited as
such and will be referred to herein as "this code."
| ||||
(SECTION R103 DEPARTMENT OF
BUILDING SAFETY)
| ||||
R103.2 Appointment. The
Building Official shall be appointed as approved by ordinance.
| ||||
R103.90 Work completed by licensed
contractors. All mechanical, electrical, plumbing, and drainlaying
work shall be performed by a contractor licensed in accordance with
Sections 103.90.1 through 103.90.4.
| ||||
Exceptions:
| ||||
1.
|
Work in which a permit is not required.
| |||
2.
|
Minor work, as determined by the
Building Official, when the work is performed by the owner to the
dwelling in which he/she resides.
| |||
R103.90.1 Licensing of mechanical
contractors. Any contractor wishing to enter into the mechanical
business within the City of O'Fallon, shall first be duly examined
and be successfully passed and licensed by St. Charles County, Missouri,
and hold an active license as Class A or Class B.
| ||||
R103.90.2 Licensing of electrical
contractors. Any contractor wishing to enter into the electrical
business within the City of O'Fallon, shall first be duly examined
and be successfully passed and licensed by St. Charles County, Missouri,
and hold an active license as electrical contractor.
| ||||
R103.90.3 Licensing of plumbing
contractors. Any contractor wishing to enter into the plumbing
business within the City of O'Fallon, shall first be duly examined
and be successfully passed and licensed by St. Charles County, Missouri,
and hold an active license as plumbing contractor.
| ||||
R103.90.4 Licensing of drainlaying
contractors. Any contractor wishing to enter into the drainlaying
business within the City of O'Fallon, shall first be duly examined
and be successfully passed and licensed by St. Charles County, Missouri,
and hold an active license as drainlaying contractor.
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(SECTION R105 PERMITS)
| ||||
R105.2 Work exempt from permit. Exemption from permit requirements of this code shall not be deemed
to grant authorization for any work to be done in any manner in violation
of the provisions of this code or any other laws or ordinances of
this jurisdiction. Permits shall not be required for the following:
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Building:
| ||||
1.
|
Retaining walls that are not over
4 feet (1,219 mm) in height measured from the bottom of the footing
to the top of the wall, unless supporting a surcharge, impounding
Class I, II or IIIA liquids, or altering the channelized drainage
of any drainage area or lot.
| |||
2.
|
Water tanks supported directly upon
grade if the capacity does not exceed 5,000 gallons (18,927 L) and
the ratio of height to diameter or width does not exceed 2 to 1.
| |||
3.
|
Sidewalks and driveways on private
property and not affecting the right-of-way.
| |||
4.
|
Painting, papering, tiling, carpeting,
cabinets, counter tops, tuckpointing, siding, and similar finish work.
| |||
5.
|
Prefabricated swimming pools that
are less than 24 inches (610 mm) deep.
| |||
6.
|
Swings and other playground equipment.
| |||
7.
|
Window awnings supported by an exterior
wall that do not project more than 54 inches (1,372 mm) from the exterior
wall and do not require additional support.
| |||
8.
|
Flag poles less than thirty-five
(35) feet in height.
| |||
9.
|
Replacement of doors and windows
where the opening size is not increased or decreased.
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10.
|
Reroofing of asphalt shingle roofs.
| |||
11.
|
Sheds less than 3 feet in depth and
a total square footage of less than 25.
| |||
Electrical:
| ||||
1.
|
Listed cord-and-plug-connected temporary
decorative lighting.
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2.
|
Reinstallation of attachment plug
receptacles but not the outlets therefor.
| |||
3.
|
Replacement of branch circuit overcurrent
devices of the required capacity in the same location.
| |||
4.
|
Electrical wiring, devices, appliances,
apparatus or equipment operating at less than 25 volts and not capable
of supplying more than 50 watts of energy.
| |||
5.
|
Minor repair work, including the
replacement of lamps or the connection of approved portable electrical
equipment to approved permanently installed receptacles.
| |||
Gas:
| ||||
1.
|
Portable heating, cooking or clothes-drying
appliances.
| |||
2.
|
Replacement of any minor part that
does not alter approval of equipment or make such equipment unsafe.
| |||
3.
|
Portable-fuel-cell appliances that
are not connected to a fixed piping system and are not interconnected
to a power grid.
| |||
Mechanical:
| ||||
1.
|
Portable heating appliances.
| |||
2.
|
Portable ventilation appliances.
| |||
3.
|
Portable cooling units.
| |||
4.
|
Steam, hot- or chilled-water piping
within any heating or cooling equipment regulated by this code.
| |||
5.
|
Replacement of any minor part that
does not alter approval of equipment or make such equipment unsafe.
| |||
6.
|
Portable evaporative coolers.
| |||
7.
|
Self-contained refrigeration systems
containing 10 pounds (4.54 kg) or less of refrigerant or that are
actuated by motors of 1 horsepower (746 W) or less.
| |||
8.
|
Portable-fuel-cell appliances that
are not connected to a fixed piping system and are not interconnected
to a power grid.
| |||
Plumbing:
| ||||
1.
|
The stopping of leaks in drains,
water, soil, waste or vent pipe; provided, however, that if any concealed
trap, drainpipe, water, soil, waste or vent pipe becomes defective
and it becomes necessary to remove and replace the same with new material,
such work shall be considered as new work and a permit shall be obtained
and inspection made as provided in this code.
| |||
2.
|
The clearing of stoppages or the
repairing of leaks in pipes, valves or fixtures, and the removal and
reinstallation of water closets, provided such repairs do not involve
or require the replacement or rearrangement of valves, pipes or fixtures.
| |||
3.
|
Fixture replacement with similar
fixtures where plumbing connections are not relocated.
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(SECTION R106 CONSTRUCTION
DOCUMENTS)
| ||||
R106.1 Submittal documents. Submittal documents consisting of construction documents, and other
data shall be submitted as required by the Building Official. The
construction documents shall be prepared by a registered design professional
where required by the statutes of the jurisdiction in which the project
is to be constructed. Where special conditions exist, the Building
Official is authorized to require additional construction documents
to be prepared by a registered design professional.
| ||||
Exception:
| ||||
The Building Official is authorized
to waive the submission of construction documents and other data not
required to be prepared by a registered design professional if it
is found that the nature of the work applied for is such that reviewing
of construction documents is not necessary to obtain compliance with
this code.
| ||||
R106.90 Sprinkler verification. All applications for permit for one- and two-family dwellings shall
include a written verification by the builder affirming that a fire
sprinkler system was offered to the purchaser prior to entering into
the purchase contract. If there is no purchaser at the time that the
permit application is submitted, then said verification shall be made
as soon as there is a purchaser and prior to the issuance of a certification
of occupancy for the new residence.
| ||||
R106.91 Elevations certified. Any building being erected or constructed in flood plain shall provide
an elevation certificate from a Registered Engineer or Land Surveyor,
licensed in the State of Missouri, before final approval of the foundation
inspection will be given.
| ||||
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 shall be kept at the site of work, including in the
local office such as a job trailer or display home, or made available
at the time of inspection and shall be open to inspection by the Building
Official or a duly authorized representative.
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(SECTION R108 FEES)
| ||||
R108.2 Schedule of Permit Fees. On buildings, structures, electrical, gas, mechanical and plumbing systems or alterations requiring a permit, a fee for each permit shall be paid as required, in accordance with Section 500.470 of the City of O'Fallon Municipal Code.
| ||||
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.
|
Rough grading of lots, not to include
excavating for basements
| |||
2.
|
Stakeouts and other similar preparatory
actions
| |||
(SECTION R109 INSPECTIONS)
| ||||
R109.90 Workmanship. Repairs, maintenance work, alterations or installations which are
caused directly or indirectly by the enforcement of this code shall
be executed and installed in a workmanlike manner in compliance with
this code, in accordance with industry standards, and in accordance
with the manufacturer's installation instructions.
| ||||
(SECTION R112 MEANS OF APPEAL)
| ||||
R112.1 Application for Appeal. For the appeal process and requirements, see Section 113 of the
Building Code.
| ||||
R112.2 Limitations on Authority. Delete in its entirety.
| ||||
R112.3 Qualifications. Delete in its entirety.
| ||||
R112.4 Administration. Delete in its entirety.
| ||||
(SECTION R113 VIOLATIONS)
| ||||
R113.2 Notice of Violation. When the Building Official determines that a violation of this code
exists, he/she shall immediately notify the violator. The notification
shall be in writing and shall be delivered to the violator or his/her
legally authorized representative or mailed to his/her last known
address via 1st Class U.S. Mail. Any person having been notified that
a violation other than a stop work order exists and who fails to abate
the violation within ten (10) days after notification shall be subject
to the penalties enumerated in Section 113.4.
| ||||
R113.4 Violation Penalties. Any person, firm or corporation who shall violate any provisions
of this code, or who shall fail to comply with any of the requirements
thereof, or who shall erect, construct, alter or repair a structure
in violation of an approved plan or directive of the Building Official,
or of a permit or certificate issued under the provisions of this
code, or who shall continue any work in or about a structure after
having been served a stop work order, or any owner or tenant of a
building or premises in which such violation shall exist, shall upon
conviction thereof be punishable by a fine of not more than five hundred
dollars ($500.00) or by imprisonment not exceeding ninety (90) days,
or by both such fine and imprisonment. Each day that a violation continues
shall be deemed a separate offense.
| ||||
(SECTION R114 STOP WORK ORDER)
| ||||
R114.2 Unlawful Continuance. Any person who shall continue any work in or about the structure
after having been served with a stop work order, except such work
as that person is directed to perform to remove a violation or unsafe
condition(s), shall be subject to penalties as prescribed by law liable
to penalties as specified in Section 113.4 of this code.
|
(CHAPTER 3 BUILDING PLANNING)
|
(SECTION R301 DESIGN CRITERIA)
|
TABLE R301.2(1)
| ||
---|---|---|
CLIMATIC AND GEOGRAPHIC DESIGN
CRITERIA
| ||
GROUND SNOW LOAD
|
20 PSF
| |
WIND DESIGN
|
Speed (MPH)
|
115 MPH
|
Topographic effects
|
No
| |
Special wind region
|
No
| |
Wind-borne debris zone
|
No
| |
SEISMIC DESIGN CATEGORY
|
SDC C
| |
SUBJECT TO DAMAGE FROM
|
Weathering
|
Severe
|
Frost line depth
|
30 inches
| |
Termite
|
Moderate to Heavy
| |
WINTER DESIGN TEMP
|
6° F.
| |
ICE BARRIER UNDERLAYMENT REQUIRED
|
No
| |
FLOOD HAZARDS
|
(See Floodplain Administrator)
| |
AIR FREEZING INDEX
|
1000
| |
MEAN ANNUAL TEMP
|
55.2° F.
|
For SI: 1 pound per square foot =
0.0479 kPa, 1 mile per hour = 0.447 m/s.
| ||
a.
|
Weathering may require a higher strength
concrete or grade of masonry than necessary to satisfy the structural
requirements of this code. The weathering column shall be filled in
with the weathering index, "negligible," "moderate" or "severe" for
concrete as determined from Figure R301.2(3). The grade of masonry
units shall be determined from ASTM C 34, C 55, C 62, C 73, C 90,
C 129, C 145, C 216 or C 652.
| |
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 the minimum depth of
footing below finish grade.
| |
c.
|
The jurisdiction shall fill in this
part of the table to indicate the need for protection depending on
whether there has been a history of local subterranean termite damage.
| |
d.
|
The jurisdiction shall fill in this
part of the table with the wind speed from the basic wind speed map
[Figure R301.2(4)A]. Wind exposure category shall be determined on
a site-specific basis in accordance with Section R301.2.1.4.
| |
e.
|
The outdoor design dry-bulb temperature
shall be selected from the columns of 97 1/2-percent values for
winter from Appendix D of the International Plumbing Code. Deviations
from the Appendix D temperatures shall be permitted to reflect local
climates or local weather experience as determined by the Building
Official.
| |
f.
|
The jurisdiction shall fill in this
part of the table with the seismic design category determined from
Section R301.2.2.1.
| |
g.
|
The jurisdiction shall fill in this
part of the table with: (a) the date of the jurisdiction's entry into
the National Flood Insurance Program (date of adoption of the first
code or ordinance for management of flood hazard areas), (b) the date(s)
of the Flood Insurance Study, and (c) the panel numbers and dates
of the currently effective FIRMs and FBFMs or other flood hazard map
adopted by the authority having jurisdiction, as amended.
| |
h.
|
In accordance with Sections R905.1.2,
R905.4.3.1, R905.5.3.1, R905.6.3.1, R905.7.3.1 and R905.8.3.1, where
there has been a history of local damage from the effects of ice damming,
the jurisdiction shall fill in this part of the table with "YES."
Otherwise, the jurisdiction shall fill in this part of the table with
"NO."
| |
i.
|
The jurisdiction shall fill in this
part of the table with the 100-year return period air freezing index
(BF-days) from Figure R403.3(2) or from the 100-year (99 percent)
value on the National Climatic Data Center data table "Air Freezing
Index-USA Method (Base 32° F.)."
| |
j.
|
The jurisdiction shall fill in this
part of the table with the mean annual temperature from the National
Climatic Data Center data table "Air Freezing Index-USA Method (Base
32° F.)."
| |
k.
|
In accordance with Section R301.2.1.5,
where there is local historical data documenting structural damage
to buildings due to topographic wind speed-up effects, the jurisdiction
shall fill in this part of the table with "YES." Otherwise, the jurisdiction
shall indicate "NO" in this part of the table.
| |
l.
|
In accordance with Figure R301.2(4)A,
where there is local historical data documenting unusual wind conditions,
the jurisdiction shall fill in this part of the table with "YES" and
identify any specific requirements. Otherwise, the jurisdiction shall
indicate "NO" in this part of the table.
| |
m.
|
In accordance with Section R301.2.1.2.1,
the jurisdiction shall indicate the wind-borne debris wind zone(s).
Otherwise, the jurisdiction shall indicate "NO" in this part of the
table.
|
R301.90 Minimum residential
dwelling unit areas. The minimum residential dwelling unit area shall be in accordance with Section 500.030.
| |||
(SECTION R302 FIRE-RESISTANT
CONSTRUCTION)
| |||
R302.1 Exterior walls. Construction, projections, openings and penetrations of exterior
walls of dwellings and accessory buildings shall comply with Table
R302.1(1); 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 2 feet (610 mm) of a lot line are permitted to have
roof eave projections not exceeding 4 inches (102 mm).
| ||
5.
|
Foundation vents installed in compliance
with this code are permitted.
| ||
6.
|
Uncovered decks.
| ||
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 (2) 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 1-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 2-hour fire-resistance-rated wall assembly tested
in accordance with ASTM E 119 or UL 263, or the common wall shall
be two (2) independent 1-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 honeycombcore steel
doors not less than 1 3/8 inches (35 mm) thick, or 20-minute
fire-rated doors.
| |||
R302.11.3 Required Fire Separation
Enclosure. All prefabricated metal chimneys shall be enclosed
in a fire-resistant shaft with one (1) layer of type "X" gypsum board
five-eighths (5/8) inch thick, starting from the fireplace connection
to the underside of the roof sheathing, securely attached with framing
materials. When the chimney chase is located on an exterior wall of
the structure, it need only be separated by lining the wall between
the chimney chase and the exterior wall with type "X" gypsum board
5/8 inch (16 mm) thick.
| |||
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 a 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, taping, 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 100 square feet (7.4 m2) per story.
| ||
3.2.
|
Areas of the floor assembly covered
by metal plenum, trunk lines and steel structural beams shall be considered
protected. The gypsum wallboard membrane shall be within two (2) inches
of all previously listed items.
| ||
4.
|
Wood floor assemblies using dimension
lumber or structural composite lumber equal to or greater than 2-inch
by 10-inch (50.8 mm by 254 mm) nominal dimension, or other approved
floor assemblies demonstrating equivalent fire performance.
| ||
(SECTION R303 LIGHT, VENTILATION,
AND HEATING)
| |||
R303.1.90 Basements and cellars. The glass window area in basements and cellars shall not be less
than one percent (1%) of the floor area served and shall be operable
for natural ventilation.
| |||
R303.4 Mechanical ventilation. Where the air infiltration rate of a dwelling unit is less than
five (5) air changes per hour where tested with a blower door at a
pressure of 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.
| |||
R303.7.90 Controls. All
switches that control interior stairway lights shall be illuminated
switches.
| |||
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.
| |||
(SECTION R306 SANITATION)
| |||
R306.90 Hose Bib. Every
dwelling shall be equipped with one (1) outside frost proof hose bib
which shall be protected from backflow in accordance with Section
P2902.4.3 of this code.
| |||
R306.91 Floor Drain. All basements shall be equipped with a floor drain within twenty
(20) feet of heating/cooling system(s) and water heaters. The floor
drain shall comply with Chapter 27, Section P2719 of this code.
| |||
(SECTION R309 GARAGES AND CARPORTS)
| |||
R309.5 Fire sprinklers. Private garages shall be protected by fire sprinklers where the
garage wall has been designed based on Table R302.1(2), Footnote a,
and the homeowner has opted to purchase a fire sprinkler system for
their residence in accordance with 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.
| |||
(SECTION R310 EMERGENCY ESCAPE
AND RESCUE OPENINGS)
| |||
R310.1 Emergency Escape and
Rescue Openings. Basements, habitable attics and every sleeping
room shall have not less than one (1) operable emergency escape and
rescue opening. Where basements contain one (1) or more sleeping rooms,
an emergency escape and rescue opening shall be required in each sleeping
room. Emergency escape and rescue openings shall open directly into
a public way, or to a yard or court that opens to a public way.
| |||
Exceptions:
| |||
1.
|
Storm shelters and basements used
only to house mechanical equipment not exceeding a total floor area
of two hundred (200) square feet.
| ||
2.
|
Emergency escape and rescue openings
are not required in basements (other than sleeping rooms) provided
they were approved prior to the adoption of this ordinance.
| ||
(SECTION R311 MEANS OF EGRESS)
| |||
R311.3 Floors and landings
at exterior doors. There shall be a landing or floor on each
side of each 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 36 inches (914 mm) measured in the direction of travel.
The slope at exterior landings shall not to exceed 1/4 unit vertical
in 12 units horizontal (2 percent).
| |||
Exceptions:
| |||
1.
|
Exterior balconies less than 60 square
feet (5.6 m2) and only accessible from
a door are permitted to have a landing less than 36 inches (914 mm)
measured in the direction of travel.
| ||
2.
|
Doors that are not required egress
doors and are served by a stairway no more than four (4) risers.
| ||
3.
|
Doors protected by a guard in accordance
with this code.
| ||
4.
|
Doors protected in a manner approved
by the Building Official.
| ||
R311.3.2 Floor elevations for
other exterior doors. Doors other than the required egress
door shall be provided with landings and floors not more than 7 3/4
inches (196 mm) below the top of the threshold.
| |||
Exception:
| |||
A landing is not required where a
stairway of four (4) or fewer risers is located on the exterior side
of the door, provided the 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.
| |||
Exceptions:
| |||
The alteration, repair, or reconstruction
of an existing stairway shall not be required to comply with this
Section where the existing space and construction does not allow a
reduction in pitch or slope.
| |||
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 that
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 be not less than 36 inches (914 mm).
| |||
Exceptions:
| |||
1.
|
A floor or landing is not required
at the top of an interior flight of stairs, including stairs in an
enclosed garage, provided that a door does not swing over the stairs.
| ||
2.
|
Where not required by Section R311.3
and R311.3.2.
| ||
(SECTION R313 AUTOMATIC FIRE
SPRINKLER SYSTEMS)
| |||
R313.1 Townhouse automatic
fire sprinkler systems. An automatic residential fire sprinkler
system shall be installed in townhouses, in accordance with R313.90.
| |||
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.
| |||
R313.2 One- and two-family
dwellings automatic fire systems. An automatic residential
fire sprinkler system shall be installed in one- and two-family dwellings
in accordance with R313.90.
| |||
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.
| |||
R313.90 Sprinklers in Residential
Structures. Notwithstanding the provisions of the Building
Code and International Residential Code, as amended and adopted by
the City of O'Fallon, Missouri, and in accordance with Section 67.281,
RSMo., a builder of one- or two-family dwellings 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 one- or two-family
dwelling shall be denied the right to choose or decline to install
a fire sprinkler system in such dwelling or residence being purchased.
|
(CHAPTER 4 FOUNDATIONS)
|
(SECTION R403 FOOTINGS)
|
R403.1.1 Minimum size. The minimum width, W, and thickness, T, for concrete footings shall
be in accordance with Tables R403.1(1) through R403.1(4) and Figure
R403.1(1) or R403.1.3, as applicable. The footing width shall be based
on the load-bearing value of the soil in accordance with Table R401.4.1.
Footing projections, P, shall be not less than 2 inches (51 mm) and
shall not exceed the thickness of the footing. Footing thickness and
projection for fireplaces shall be in accordance with Section R1001.2.
The size of footings supporting piers and columns shall be based on
the tributary load and allowable soil pressure in accordance with
Table R401.4.1. Footings for wood foundations shall be in accordance
with the details set forth in Section R403.2, and Figures R403.1(2)
and R403.1(3).
|
Table R403.1(1)
| |||||||
---|---|---|---|---|---|---|---|
Minimum Width and Thickness
for Concrete Footings for Light-Frame Construction (inches)a,b
| |||||||
Load-Bearing Value of Soil
(psf)
| |||||||
Snow Load or Roof Live Load
|
Story and Type of Structure
with Light Frame
|
1500
|
2000
|
2500
|
3000
|
3500
|
4000
|
20 psf
|
1 story - slab-on-grade
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
1 story - with crawl space
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
1 story - plus basement
|
18 x 6
|
14 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
2 story - slab-on-grade
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
2 story - with crawl space
|
16 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
2 story - plus basement
|
22 x 6
|
16 x 6
|
13 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
3 story - slab-on-grade
|
14 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
3 story - with crawl space
|
19 x 6
|
14 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
3 story - plus basement
|
25 x 8
|
19 x 6
|
15 x 6
|
13 x 6
|
12 x 6
|
12 x 6
| |
30 psf
|
1 story - slab-on-grade
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
1 story - with crawl space
|
13 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
1 story - plus basement
|
19 x 6
|
14 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
2 story - slab-on-grade
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
2 story - with crawl space
|
17 x 6
|
13 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
2 story - plus basement
|
23 x 6
|
17 x 6
|
14 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
3 story - slab-on-grade
|
15 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
3 story - with crawl space
|
20 x 6
|
15 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
3 story - plus basement
|
26 x 8
|
20 x 6
|
16 x 6
|
13 x 6
|
12 x 6
|
12 x 6
| |
50 psf
|
1 story - slab-on-grade
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
1 story - with crawl space
|
16 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
1 story - plus basement
|
21 x 6
|
16 x 6
|
13 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
2 story - slab-on-grade
|
14 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
2 story - with crawl space
|
19 x 6
|
14 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
2 story - plus basement
|
25 x 7
|
19 x 6
|
15 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
3 story - slab-on-grade
|
17 x 6
|
13 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
3 story - with crawl space
|
22 x 6
|
17 x 6
|
13 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
3 story - plus basement
|
28 x 9
|
21 x 6
|
17 x 6
|
14 x 6
|
12 x 6
|
12 x 6
| |
70 psf
|
1 story - slab-on-grade
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
1 story - with crawl space
|
18 x 6
|
13 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
1 story - plus basement
|
24 x 7
|
18 x 6
|
14 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
2 story - slab-on-grade
|
16 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
2 story - with crawl space
|
21 x 6
|
16 x 6
|
13 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
2 story - plus basement
|
27 x 9
|
20 x 6
|
16 x 6
|
14 x 6
|
12 x 6
|
12 x 6
| |
3 story - slab-on-grade
|
19 x 6
|
14 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
3 story - with crawl space
|
25 x 7
|
18 x 6
|
15 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
3 story - plus basement
|
30 x 10
|
23 x 6
|
18 x 6
|
15 x 6
|
13 x 6
|
12 x 6
|
For SI: 1 inch = 25.4 mm, 1 plf =
14.6N/m, 1 pound per square foot = 47.9 N/m2.
| ||
a.
|
Interpolation allowed. Extrapolation
is not allowed.
| |
b.
|
Based on 32-foot-wide house with
load-bearing center wall that carries half of the tributary attic,
and floor framing. For every two (2) feet of adjustment to the width
of the house, add or subtract two (2) inches of footing width and
one (1) inch of footing thickness [but not less than six (6) inches
thick].
| |
Table R403.1(2)
| |||||||
---|---|---|---|---|---|---|---|
Minimum Width and Thickness
for Concrete Footings for Light-Frame Construction with Brick Veneer
(inches)a,b
| |||||||
Load-Bearing Value of Soil
(psf)
| |||||||
Snow Load or Roof Live Load
|
Story and Type of Structure
with Brick Veneer
|
1500
|
2000
|
2500
|
3000
|
3500
|
4000
|
20 psf
|
1 story - slab-on-grade
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
1 story - with crawl space
|
15 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
1 story - plus basement
|
21 x 6
|
15 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
2 story - slab-on-grade
|
15 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
2 story - with crawl space
|
20 x 6
|
15 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
2 story - plus basement
|
26 x 8
|
20 x 6
|
16 x 6
|
13 x 6
|
12 x 6
|
12 x 6
| |
3 story - slab-on-grade
|
20 x 6
|
15 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
3 story - with crawl space
|
26 x 8
|
19 x 6
|
15 x 6
|
13 x 6
|
12 x 6
|
12 x 6
| |
3 story - plus basement
|
32 x 11
|
24 x 7
|
19 x 6
|
16 x 6
|
14 x 6
|
12 x 6
| |
30 psf
|
1 story - slab-on-grade
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
1 story - with crawl space
|
16 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
1 story - plus basement
|
22 x 6
|
16 x 6
|
13 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
2 story - slab-on-grade
|
16 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
2 story - with crawl space
|
22 x 6
|
16 x 6
|
13 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
2 story - plus basement
|
27 x 9
|
21 x 6
|
16 x 6
|
14 x 6
|
12 x 6
|
12 x 6
| |
3 story - slab-on-grade
|
21 x 6
|
16 x 6
|
13 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
3 story - with crawl space
|
27 x 8
|
20 x 6
|
16 x 6
|
13 x 6
|
12 x 6
|
12 x 6
| |
3 story - plus basement
|
33 x 11
|
24 x 7
|
20 x 6
|
16 x 6
|
14 x 6
|
12 x 6
| |
50 psf
|
1 story - slab-on-grade
|
13 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
1 story - with crawl space
|
18 x 6
|
14 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
1 story - plus basement
|
24 x 7
|
18 x 6
|
14 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
2 story - slab-on-grade
|
18 x 6
|
14 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
2 story - with crawl space
|
24 x 7
|
18 x 6
|
14 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
2 story - plus basement
|
29 x 10
|
22 x 6
|
18 x 6
|
15 x 6
|
13 x 6
|
12 x 6
| |
3 story - slab-on-grade
|
27 x 7
|
18 x 6
|
13 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
3 story - with crawl space
|
29 x 9
|
22 x 6
|
17 x 6
|
14 x 6
|
12 x 6
|
12 x 6
| |
3 story - plus basement
|
35 x 12
|
26 x 8
|
21 x 6
|
17 x 6
|
15 x 6
|
13 x 6
| |
70 psf
|
1 story - slab-on-grade
|
15 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
1 story - with crawl space
|
20 x 6
|
15 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
1 story - plus basement
|
26 x 8
|
20 x 6
|
16 x 6
|
13 x 6
|
12 x 6
|
12 x 6
| |
2 story - slab-on-grade
|
20 x 6
|
15 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
2 story - with crawl space
|
26 x 8
|
19 x 6
|
15 x 6
|
13 x 6
|
12 x 6
|
12 x 6
| |
2 story - plus basement
|
32 x 11
|
24 x 7
|
19 x 6
|
16 x 6
|
14 x 6
|
12 x 6
| |
3 story - slab-on-grade
|
26 x 8
|
19 x 6
|
15 x 6
|
13 x 6
|
12 x 6
|
12 x 6
| |
3 story - with crawl space
|
31 x 11
|
23 x 7
|
19 x 6
|
16 x 6
|
13 x 6
|
12 x 6
| |
3 story - plus basement
|
37 x 13
|
28 x 9
|
22 x 6
|
18 x 6
|
16 x 6
|
14 x 6
|
For SI: 1 inch = 25.4 mm, 1 plf =
14.6N/m, 1 pound per square foot = 47.9 N/m2.
| ||
a.
|
Interpolation allowed. Extrapolation
is not allowed.
| |
b.
|
Based on 32-foot-wide house with
load-bearing center wall that carries half of the tributary attic,
and floor framing. For every two (2) feet of adjustment to the width
of the house, add or subtract two (2) inches of footing width and
one (1) inch of footing thickness [but not less than six (6) inches
thick].
| |
Table R403.1(3)
| |||||||
---|---|---|---|---|---|---|---|
Minimum Width and Thickness
for Concrete Footings With Cast-in-Place Concrete or Fully Grouted
Masonry Wall Construction (inches)a,b
| |||||||
Load-Bearing Value of Soil
(psf)
| |||||||
Snow Load or Roof Live Load
|
Story and Type of Structure
with CMU
|
1500
|
2000
|
2500
|
3000
|
3500
|
4000
|
20 psf
|
1 story - slab-on-grade
|
14 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
1 story - with crawl space
|
19 x 6
|
14 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
1 story - plus basement
|
25 x 8
|
19 x 6
|
15 x 6
|
13 x 6
|
12 x 6
|
12 x 6
| |
2 story - slab-on-grade
|
23 x 7
|
18 x 6
|
14 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
2 story - with crawl space
|
29 x 9
|
22 x 6
|
17 x 6
|
14 x 6
|
12 x 6
|
12 x 6
| |
2 story - plus basement
|
35 x 12
|
26 x 8
|
21 x 6
|
17 x 6
|
15 x 6
|
13 x 6
| |
3 story - slab-on-grade
|
32 x 11
|
24 x 7
|
19 x 6
|
16 x 6
|
14 x 6
|
12 x 6
| |
3 story - with crawl space
|
38 x 14
|
28 x 9
|
23 x 6
|
19 x 6
|
16 x 8
|
14 x 6
| |
3 story - plus basement
|
43 x 17
|
33 x 11
|
26 x 8
|
22 x 6
|
19 x 6
|
16 x 6
| |
30 psf
|
1 story - slab-on-grade
|
15 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
1 story - with crawl space
|
20 x 6
|
15 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
1 story - plus basement
|
26 x 8
|
20 x 6
|
16 x 6
|
13 x 6
|
12 x 6
|
12 x 6
| |
2 story - slab-on-grade
|
24 x 7
|
18 x 6
|
15 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
2 story - with crawl space
|
30 x 10
|
22 x 6
|
18 x 6
|
15 x 6
|
13 x 6
|
12 x 6
| |
2 story - plus basement
|
36 x 13
|
27 x 8
|
21 x 6
|
18 x 6
|
15 x 6
|
13 x 6
| |
3 story - slab-on-grade
|
33 x 12
|
25 x 7
|
20 x 6
|
17 x 6
|
14 x 6
|
12 x 6
| |
3 story - with crawl space
|
39 x 14
|
29 x 9
|
23 x 7
|
19 x 6
|
17 x 6
|
14 x 6
| |
3 story - plus basement
|
44 x 17
|
33 x 12
|
27 x 8
|
22 x 6
|
19 x 6
|
17 x 6
| |
50 psf
|
1 story - slab-on-grade
|
17 x 6
|
13 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
1 story - with crawl space
|
22 x 6
|
17 x 6
|
13 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
1 story - plus basement
|
28 x 9
|
21 x 6
|
17 x 6
|
14 x 6
|
12 x 6
|
12 x 6
| |
2 story - slab-on-grade
|
27 x 8
|
20 x 6
|
16 x 6
|
13 x 6
|
12 x 6
|
12 x 6
| |
2 story - with crawl space
|
32 x 11
|
24 x 7
|
19 x 6
|
16 x 6
|
14 x 6
|
12 x 6
| |
2 story - plus basement
|
38 x 14
|
28 x 9
|
23 x 6
|
19 x 6
|
16 x 6
|
14 x 6
| |
3 story - slab-on-grade
|
35 x 13
|
27 x 8
|
21 x 6
|
18 x 6
|
15 x 6
|
13 x 6
| |
3 story - with crawl space
|
41 x 15
|
31 x 10
|
24 x 7
|
20 x 6
|
17 x 6
|
15 x 6
| |
3 story - plus basement
|
47 x 18
|
35 x 12
|
28 x 9
|
23 x 7
|
20 x 6
|
17 x 6
| |
70 psf
|
1 story - slab-on-grade
|
19 x 6
|
14 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
12 x 6
|
1 story - with crawl space
|
25 x 7
|
18 x 6
|
15 x 6
|
12 x 6
|
12 x 6
|
12 x 6
| |
1 story - plus basement
|
30 x 10
|
23 x 6
|
18 x 6
|
15 x 6
|
13 x 6
|
12 x 6
| |
2 story - slab-on-grade
|
29 x 9
|
22 x 6
|
17 x 6
|
14 x 6
|
12 x 6
|
12 x 6
| |
2 story - with crawl space
|
34 x 12
|
26 x 8
|
21 x 6
|
17 x 6
|
15 x 6
|
13 x 6
| |
2 story - plus basement
|
40 x 15
|
30 x 10
|
24 x 7
|
20 x 6
|
17 x 6
|
15 x 6
| |
3 story - slab-on-grade
|
38 x 14
|
28 x 9
|
23 x 6
|
19 x 6
|
16 x 6
|
14 x 6
| |
3 story - with crawl space
|
43 x 16
|
32 x 11
|
26 x 8
|
21 x 6
|
18 x 6
|
16 x 6
| |
3 story - plus basement
|
49 x 19
|
37 x 13
|
29 x 10
|
24 x 7
|
21 x 6
|
18 x 6
|
For SI: 1 inch = 25.4 mm, 1 plf =
14.6N/m, 1 pound per square foot = 47.9 N/m2.
| ||
a.
|
Interpolation allowed. Extrapolation
is not allowed.
| |
b.
|
Based on 32-foot-wide house with
load-bearing center wall that carries half of the tributary attic,
and floor framing. For every two (2) feet of adjustment to the width
of the house, add or subtract two (2) inches of footing width and
one (1) inch of footing thickness [but not less than six (6) inches
thick].
| |
Table R403.1(4)
| ||||
---|---|---|---|---|
Minimum Width of Concrete,
Precast, or Masonry Footings (inches) for Light-Frame Construction
with Pre-Fabricated Roof Trussesa,b,c
| ||||
Load-Bearing Value of Soil
(psf)
| ||||
1500
|
2000
|
3000
|
>4000
| |
Conventional light-frame construction
with pre-fabricated trusses
| ||||
1 story
|
12
|
12
|
12
|
12
|
2 story
|
15
|
12
|
12
|
12
|
3 story
|
23
|
17
|
12
|
12
|
4-inch brick veneer over light
frame or 8-inch hollow concrete masonry
| ||||
1 story
|
12
|
12
|
12
|
12
|
2 story
|
21
|
16
|
12
|
12
|
3 story
|
32
|
24
|
16
|
12
|
8-inch solid or fully grouted
masonry
| ||||
1 story
|
16
|
12
|
12
|
12
|
2 story
|
29
|
21
|
14
|
12
|
3 story
|
42
|
32
|
21
|
16
|
For SI: 1 inch = 25.4 mm, 1 pound
per square foot = 0.0479 kPa
| ||
a.
|
Spread footings shall be same thickness
as the wall (minimum of eight (8) inches).
| |
b.
|
Where minimum footing width is twelve
(12) inches, use of a single wythe of solid or fully grouted 12-inch
nominal concrete masonry units is permitted.
| |
c.
|
Snow Load or Roof Live Load shall
not exceed 20 psf. If load exceeds 20 psf, designs must be completed
by a licensed design professional.
|
R403.1.4.1 Frost Protection. Except where otherwise protected from frost, foundation walls, piers
and other permanent supports of buildings and structures shall be
protected from frost by one or more of the following methods:
| ||
1.
|
Extended below the frost line specified
in Table R301.2.(1).
| |
2.
|
Constructed in accordance with Section
R403.3.
| |
3.
|
Constructed in accordance with ASCE
32.
| |
4.
|
Erected on solid rock.
| |
Exceptions:
| ||
1.
|
Protection of freestanding accessory
structures, other than garages, with an area of two hundred (200)
square feet or less, of light-frame construction, with an eave height
of 10 feet (3,048 mm) or less shall not be required.
| |
2.
|
Decks not supported by a dwelling
need not be provided with footings that extend below the frost line.
| |
Footings shall not bear on frozen
soil unless the frozen condition is permanent.
| ||
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 units horizontal
(33.3-percent slope) shall conform to Sections R403.1.7.1 through
R403.1.7.4. or designed and sealed by a registered engineer with approval
from the Building Official.
| ||
(SECTION R404 FOUNDATION AND
RETAINING WALLS)
| ||
R404.1.3.2 Reinforcement for
foundation walls. Concrete foundation walls shall be laterally
supported at the top and bottom. Horizontal reinforcement shall be
provided in accordance with Table R404.1.2(10). Vertical reinforcement
is permitted to be provided in accordance with Table R404.1.2(2),
R404.1.2(3), R404.1.2(4), R404.1.2(5), R404.1.2(6), R404.1.2(7) or
R404.1.2(8). Vertical reinforcement for flat basement walls retaining
4 feet (1,219 mm) or more of unbalanced backfill is permitted to be
determined in accordance with Table R404.1.2(9). For basement walls
supporting above grade concrete walls, vertical reinforcement shall
be the greater of that required by Tables R404.1.2(2) through R404.1.2(8)
or by Section R608.6 for the above-grade wall. In buildings assigned
to Seismic Design Category D0, D1 or D2, concrete foundation walls
shall also comply with Section R404.1.4.2.
|
Table R404.1.2(10)
| ||
---|---|---|
Concrete Foundation Walls
| ||
Maximum Wall Height
|
Maximum Depth of Unbalanced
Backfill
|
Minimum Nominal Wall Thickness
|
7'-0"
|
6'-0" or less
7'-0"
|
8"
10" (Note a)
|
8'-0"
|
6'-0 or less
7'-0"
8'-0"
|
8" (Note a)
8" (Note a)
8" (Note a)
|
9'-0"
|
6'-0" or less
7'-0"
8'-0"
9'-0"
|
10" (Note b)
10" (Note b)
10" (Note b)
10" (Note b)
|
10'0"
|
9'0"
|
12" (Note c)
|
Note a: Concrete foundation walls
may be constructed a minimum of nominal 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 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.
|
Note c: Concrete foundation walls
may be constructed a minimum of nominal 12 inches thick. A minimum
of three #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.
|
Note d: The concrete minimum wall
thickness shall be eight (8) inches for foundation walls in soil classes
SC, MH, ML-CL and inorganic CL when maximum wall height is eight (8)
feet.
|
Note e: 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.
|
Note f: 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.
|
(SECTION R405 FOUNDATION DRAINAGE)
| ||
R405.1 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 1 foot (305 mm) beyond the
outside edge of the footing and 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 2 inches (51 mm) of washed gravel
or crushed rock not less than one (1) sieve size larger than the tile
joint opening or perforation and covered with not less than 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
R405.1.90 are approved as an alternative method to meet the requirements
of this Section.
| |
R405.1.90 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.
| ||
R405.1.90.1 Groundwater present. Provide drain tile, perforated pipe or other approved foundation
drainage systems 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.
| ||
R405.1.90.2 No groundwater
present. Provide drain tile, perforated pipe or other approved
foundation drainage systems 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.
| ||
R405.1.90.3 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.
| ||
R405.1.90.4 Drainage system. A drainage system shall discharge by gravity to daylight or be connected
to an approved sump with pump.
|
(CHAPTER 5 FLOORS)
| ||
(SECTION 507 EXTERIOR DECKS)
| ||
R507.2.4 Deck lateral load
connection. The lateral load connection required by Section
R507.1 shall be one (1) of the following methods:
| ||
1.
|
In accordance with Figure R507.2.3(1)
with hold-down tension devices installed in not less than two (2)
locations per deck, within twenty-four (24) inches of each end of
the deck. Each device shall have an allowable stress design capacity
of not less than 1,500 pounds (6672 N).
| |
2.
|
In accordance with Figure R507.2.3(2)
with hold-down tension devices installed in not less than four (4)
locations per deck, and each device shall have an allowable stress
design capacity of not less than 750 pounds (3336 N).
| |
3.
|
Using knee braces extending from
the floor system to the posts.
| |
4.
|
Using a diagonal brace across the
floor system installed below the floor system and attached using a
(2) 10d nails through the brace into each joist, or by a metal diagonal
brace "cut-in" and attached to the top chords of the joist.
| |
5.
|
Full depth burial of the deck posts.
|
(CHAPTER 6 WALL CONSTRUCTION)
|
(SECTION 602 WOOD WALL FRAMING)
|
R602.7.5 Supports for headers. Headers shall be supported on each end with one (1) 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 x 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 WALLSa
| ||
Maximum Header Span
(feet)
|
Ultimate Design Wind Speed
and Exposure Category
| |
<140 mph, Exposure B or <130
mph, Exposure C
|
<115 mph, Exposure Bb
| |
4
|
1
|
1
|
6
|
2
|
1
|
8
|
2
|
1
|
10
|
3
|
2
|
12
|
3
|
2
|
14
|
3
|
2
|
16
|
4
|
2
|
18
|
4
|
2
|
a.
|
For header spans between those given
above, use the minimum number of full-height studs associated with
the larger header span.
|
b.
|
The tabulated minimum number of full-height
studs is applicable where jack studs are provided to support the header
at each end in accordance with Table R602.7.(1). Where a framing anchor
is used to support the header in lieu of a jack stud in accordance
with footnote "d" of Table R602.7.(1), the minimum number of full-height
studs at each end of a header shall be in accordance with requirements
for wind speed <140 mph, Exposure B.
|
R602.12 Simplified wall bracing. Buildings meeting all of the conditions listed below shall be permitted
to be braced in accordance with this Section as an alternate to the
requirements of Section R602.10. The entire building shall be braced
in accordance with this Section; the use of other bracing provisions
of Section R602.10, except as specified herein, shall not be permitted.
| ||
1.
|
There shall be not more than three
(3) stories above the top of a concrete or masonry foundation or basement
wall. Permanent wood foundations shall not be permitted.
| |
2.
|
Floors shall not cantilever more
than 24 inches (607 mm) beyond the foundation or bearing wall below.
| |
3.
|
Wall height shall not be greater
than a nominal 12 feet when using the minimum required bracing lengths
specified in Table 602.12.4.
| |
Exception: Structural
calculations and details are not required when there are no braced
wall panels in that portion of a wall where the height exceeds a nominal
12 feet and that greater wall height segment is part of a prescriptive
braced wall line on each of the adjacent stories.
| ||
4.
|
The building shall have a roof eave-to-ridge
height of 15 feet (4,572 mm) or less.
| |
5.
|
Exterior walls shall have gypsum
board with a minimum thickness of 1/2 inch (12.7 mm) installed on
the interior side fastened in accordance with Table R702.3.5.
| |
Exception: Gypsum board
is not required for wall bracing on exterior walls in garages.
| ||
6.
|
The structure shall be located where
the ultimate design wind speed is less than or equal to 130 mph (58
m/s), and the exposure category is B or C.
| |
7.
|
The structure shall be located in
Seismic Design Category A, B or C for detached one- and two-family
dwellings or Seismic Design Category A, B or C for townhouses.
| |
8.
|
Cripple walls shall not be permitted
in three-story buildings.
| |
602.12.1 Circumscribed rectangle. The bracing required for each building shall be determined by circumscribing
a rectangle around the entire building on each floor as shown in Figure
602.12.1. The rectangle shall surround all enclosed offsets and projections
such as sunrooms and attached garages. Open structures, such as carports
and decks, shall be permitted to be excluded. The rectangle shall
not have a side greater than 60 feet (18,288 mm), and the ratio between
the long side and short side shall not be greater than 3:1.
| ||
R602.12.2 Sheathing materials. The following sheathing materials installed on the exterior side
of exterior walls shall be used to construct a bracing unit as defined
in Section R602.12.3. Mixing materials is prohibited.
| ||
1.
|
Wood structural panels with a minimum
thickness of 7/16 inch fastened in accordance with Table R602.3(3).
| |
2.
|
Structural fiberboard sheathing with
a minimum thickness of 1/2 inch (12.7 mm) fastened in accordance with
Table R602.3(1).
| |
R602.12.3 Bracing unit. A bracing unit shall be a full-height sheathed segment of the exterior
wall without openings or vertical or horizontal offsets and a minimum
length as specified herein. Interior walls shall not contribute toward
the amount of required bracing. Mixing of Items 1 and 2 is prohibited
on the same story.
| ||
1.
|
Where all framed portions of all
exterior walls are sheathed in accordance with Section R602.12.2,
including wall areas between bracing units, above and below openings
and on gable end walls, the minimum length of a bracing unit shall
be 3 feet (914 mm). For walls with heights greater than a nominal
10 feet, the minimum length of a bracing unit shall be 4 feet (1,219
mm).
| |
2.
|
Where the exterior walls are braced
with sheathing panels in accordance with Section R602.12.2 and areas
between bracing units are covered with other materials, the minimum
length of a bracing unit shall be 4 feet (1,219 mm).
|
(CHAPTER 9 ROOF ASSEMBLIES)
| ||
(SECTION 905 REQUIREMENTS FOR
ROOF COVERINGS)
| ||
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 be of any of the corrosion-resistant
metals in Table R905.2.8.2.
| |
2.
|
For open valleys, valley lining of
two (2) 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 18 inches (457 mm) and the top layer not less than 36 inches
(914 mm) wide.
| |
3.
|
For closed valleys (valley covered
with shingles), valley lining of two (2) plies of No. 15 felt complying
with ASTM D 226 Type 1, ASTM D 4869 Type 1, 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 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 2 inches (51 mm). Drip edges shall be mechanically
fastened to the roof deck at not more than 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.
| ||
Exception:
| ||
Unless drip edge specifically is
required by the manufacture's installation instructions of the roofing,
metal wrapped fascia extending one (1) inch under the roof covering
with the underlayment installed over it, shall be deemed to meet the
requirements of this Section.
|
(CHAPTER 10 CHIMNEYS AND FIREPLACES)
|
(SECTION 1005 FACTORY-BUILT
CHIMNEYS)
|
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
30 degrees (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 allowed by the manufacturer's
installation instructions.
|
(CHAPTER 11 ENERGY EFFICIENCY)
| ||
(SECTION N1101 GENERAL)
| ||
N1101.6 Defined terms. Add definition:
| ||
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). Unless otherwise presented to the home owner and
Building Official in writing, 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 results from any required
duct system and building envelope air leakage testing done on the
building. Where there is more than one (1) 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 the 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.
| ||
Exception:
| ||
Homes built using a master plan shall
provide a code block outlining the basic energy elements of the home
listed above, and a copy of this information will be provided to the
buyer of the home.
| ||
(SECTION N1102 BUILDING THERMAL
ENVELOPE)
|
TABLE N1102.1.2 (R402.1.2)
| ||
---|---|---|
INSULATION AND FENESTRATION
REQUIREMENTS BY COMPONENTa
| ||
CLIMATE ZONE
|
4
| |
FENESTRATION U-FACTOR
|
0.35
| |
SKYLIGHT U-FACTOR
|
0.60
|
See Note B
|
GLAZED FENESTRATION SHGC
|
NR
| |
CEILING R-VALUE
|
38
| |
WOOD FRAME WALL R-VALUE
|
13
| |
MASS WALL R-VALUE
|
8/13
|
See Note I
|
FLOOR R-VALUE
|
19
| |
BASEMENT WALL R-VALUE
|
0
|
See Note J
|
SLAB R-VALUE AND DEPTH
|
10, 2 ft
|
See Note D
|
CRAWL SPACE WALL R-VALUE
|
10/13
|
See Note C
|
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.
|
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 2 feet, whichever is less in Zones 1 through
3 for heated slabs.
|
e.
|
—
|
f.
|
—
|
g.
|
—
|
h.
|
—
|
i.
|
The second R-value applies when more
than half of the insulation is on the interior of the mass wall.
|
j.
|
Band boards and cripple walls shall
be insulated to R-13.
|
N1102.4.1 (R402.4.1) Building
thermal envelope. The building thermal envelope shall comply
with Sections N1102.4.1.1 and either N1102.4.1.2 or N1102.4.1.90.
The sealing methods between dissimilar materials shall allow for differential
expansion and contraction.
|
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 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 a Class I vapor retarder with overlapping joints
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 by
means such as, but not limited to, a gasketed fixture.
|
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 the 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
the building thermal envelope shall be sealed.
| |
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.
|
N1102.4.1.2 (R402.4.1.2) Testing
option. If testing is elected, the building or dwelling unit
shall be tested and verified as having an air leakage rate of less
than five (5) air changes per hour in Zone 4. Testing shall be conducted
in accordance with ASTM E 779 or ASTM E 1827 and reported at a pressure
of 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
weather stripping 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.
| |
N1102.4.1.90 Inspection option. The items listed in Table N1102.4.1.1 (402.4.1.1), applicable to
the method of construction, are field verified.
| ||
(SECTION N1103 SYSTEMS)
| ||
N1103.1.1 (R403.1.1) Programmable
thermostat. Delete in its entirety.
| ||
N1103.3.3 (R403.3.3) Duct testing
(Optional). Ducts may 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 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). Delete in its entirety.
| ||
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.
| ||
Exception: Line sets
between the structure and the condensing unit.
| ||
N1103.5.3 (R405.5.3) Hot water
pipe insulation (Prescriptive). Insulation for hot water pipe
with a minimum thermal resistance (R-value) of R-3 shall be applied
to the following:
| ||
1.
|
Piping larger than 3/4 inch (19 mm)
in nominal diameter.
| |
2.
|
Piping serving more than one (1)
dwelling unit.
| |
3.
|
Piping located outside the conditioned
space.
| |
4.
|
Piping from the water heater to a
distribution manifold.
| |
5.
|
Piping located under a floor slab.
| |
6.
|
Buried in piping.
| |
7.
|
Supply and return piping in recirculation
systems other than demand recirculation systems.
| |
N1103.6 (R403.6) Mechanical
ventilation (Mandatory where required by N1102.4.1.2). If,
in accordance with N1102.4.1.2 or N1102.4.1.90 the resulting air changes
per hour (ACH) at 50 pascals is less than five (5) air changes per
hour, 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.
| ||
(SECTION N1104 ELECTRICAL POWER
AND LIGHTING SYSTEMS)
| ||
N1104.1 (R404.1) Lighting equipment
(Optional). 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.
| ||
(SECTION N1105 SIMULATED PERFORMANCE
ALTERNATIVE)
|
TABLE N1105.5.2(1) [R405.5.2(1)]
| ||
---|---|---|
SPECIFICATIONS FOR THE STANDARD
REFERENCE AND PROPOSED DESIGNS
| ||
BUILDING COMPONENT
|
STANDARD REFERENCED 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 areab = 15% of the conditioned floor area
|
As proposed
|
Orientation: equally distributed
to 4 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 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 (Nbr + 1).
Where:
CFA = conditioned floor area
Nbr = 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 ratea. The mechanical ventilation rateb 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 (Nbr + 1)
Where:
CFA = conditioned floor area
Nbr = number
of bedrooms
|
As proposed
|
Internal gains
|
IGain = 17,900 + 23.8 x CFA + 4104
x Nbr (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
elementc 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 systemsd, e
|
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 systemsd, f
|
Fuel type: electric
Efficiency: in accordance with prevailing
Federal minimum standards
Capacity: sized in accordance with
Section N1103.7
|
As proposed
|
Service water heatingd, e, f
|
Fuel type; same as proposed design
Efficiency: in accordance with prevailing
Federal minimum standards
Use: gal/day = 30 + 10 x Nbr
Tank temperature: 120° F.
Where:
Nbr = number
of bedrooms
|
As proposed
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 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 = 1055J; 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 15 degrees (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.
|
(CHAPTER 13 GENERAL MECHANICAL
SYSTEM REQUIREMENTS)
| ||
(SECTION M1301 GENERAL)
| ||
M1301.2 Identification. Each length of pipe and tubing, as produced by the manufacturer
and prior to use in the field, shall bear the identification of the
manufacturer. Each pipe fitting utilized in a mechanical system shall
bear the identification of the manufacturer.
| ||
Exception: Line sets
and similar materials provided the installer can provide documentation
related to the material used such as, but not limited to, a receipt,
invoice, or container.
| ||
(SECTION M1305 APPLIANCE ACCESS)
| ||
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 two (2) inches above the adjoining ground.
Such support shall be in accordance with the manufacturer's installation
instructions. Appliances suspended from the floor shall have clearances
of not less than six (6) inches from the ground.
| ||
(SECTION M1307 APPLIANCE INSTALLATION)
| ||
M1307.2 Anchorage of appliances: Delete in its entirety.
|
(CHAPTER 14 HEATING AND COOLING
EQUIPMENT AND APPLIANCES)
| ||
(SECTION M1411 HEATING AND
COOLING EQUIPMENT)
| ||
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 (1-percent slope). Drain
piping shall be not less than 3/4-inch (19 mm) nominal pipe size.
One (1) 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 1.5 inches (38 mm), shall
be not less than 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 No. 26 Gage. Non-metallic pans shall have a minimum
thickness of not less than 0.0625 inch (1.6 mm).
| |
2.
|
A separate overflow drain line shall
be connected to the drain pan installed with the equipment. This overflow
drain shall discharge to a conspicuous point of disposal to alert
occupants in the event of a stoppage of the primary drain. The overflow
drain line shall connect to the drain pan at a higher level than the
primary drain connection.
| |
3.
|
An auxiliary drain pan without a
separate drain line shall be installed under the coils on which condensation
will occur. This pan shall be equipped with a water level detection
device conforming to UL 508 that will shut off the equipment served
prior to overflow of the pan. The pan shall be equipped with a fitting
to allow for drainage. The auxiliary drain pan shall be constructed
in accordance with Item 1 of this Section.
| |
4.
|
A water level detection device conforming
to UL 508 shall be installed that will shut off the equipment served
in the event that the primary drain is blocked. The device shall be
installed in the primary drain line, the overflow drain line or the
equipment supplied drain pan, located at a point higher than the primary
drain line connection and below the overflow rim of such pan.
|
(CHAPTER 15 EXHAUST SYSTEMS)
|
(SECTION M1502 CLOTHES DRYER
EXHAUST)
|
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 inches (0.3950 mm).
The duct shall be 4 inches (102 mm) nominal in diameter.
|
M1502.4.2 Duct installation. Exhaust ducts shall be supported at each joint, at intervals not
to exceed 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. Ducts shall not be joined with fasteners that
protrude more than 1/8 inch (3.2 mm) into the inside of the duct.
|
(SECTION M1503 RANGE HOODS)
|
M1503.4 Make-up air required. Exhaust hood system capable of exhausting in excess of four hundred
(400) cubic feet per minute shall be provided with makeup air at a
rate approximately equal to the exhaust air rate. 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.
|
(CHAPTER 16 DUCT SYSTEMS)
| ||
(SECTION M1601 DUCT CONSTRUCTION)
| ||
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, as produced by the manufacturer and prior to use in the
field, in accordance with UL 181 and installed in accordance with
the manufacturer's instructions.
| |
3.
|
Fibrous glass duct construction shall
conform to the SMACNA Fibrous Glass Duct Construction Standards or
NAIMA Fibrous Glass Duct Construction Standards.
| |
4.
|
Field-fabricated and shop-fabricated
metal and flexible duct constructions shall conform to the SMACNA
HVAC Duct Construction Standards — Metal and Flexible or by
Table M1601.1.1. Galvanized steel shall conform to ASTM A 653.
| |
5.
|
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.
| |
6.
|
Duct systems shall be constructed
of materials having a flame spread index of not greater than two hundred
(200).
| |
7.
|
Stud wall cavities and the spaces
between solid floor joists to be used as air plenums shall comply
with the following conditions:
| |
7.1.
|
These cavities or spaces shall not
be used as a plenum for supply air.
| |
7.2.
|
These cavities or spaces shall not
be part of a required fire-resistance-rated assembly.
| |
7.3.
|
Stud wall cavities shall not convey
air from more than one (1) floor level. Stud wall cavities shall be
sealed at the floor to not draft air from the living space between
the flooring and drywall.
| |
7.4.
|
Stud wall cavities and joist-space
plenums shall be isolated from adjacent concealed spaces by tight-fitting
fireblocking in accordance with Section R602.8.
| |
7.5.
|
Stud wall cavities in the outside
walls of building envelope assemblies shall not be utilized as air
plenums.
| |
M1601.4.1 Joints, seams and
connections. Longitudinal and transverse joints, seams and
connections in metallic and non-metallic ducts shall be constructed
as specified in SMACNA HVAC Duct Construction Standards - Metal and
Flexible and NAIMA Fibrous Glass Duct Construction Standards. 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 (1) inch and shall be mechanically fastened
with at least three (3) 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.
| ||
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.
|
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 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.
|
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 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 (1) dwelling
unit shall not be discharged into another dwelling unit.
| |
5.
|
Return air may be taken from a bedroom
closet over sixty-four (64) square feet in area.
|
(CHAPTER 24 FUEL GAS)
| ||||
(SECTION G2408 INSTALLATION)
| ||||
G2408.4 Clearance 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 above adjoining grade or shall be suspended
not less than 6 inches (152 mm) above adjoining grade. Such supports
shall be installed in accordance with the manufacturer's installation
instructions.
| ||||
(SECTION G2409 CLEARANCE REDUCTION)
| ||||
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.
| ||||
Exception: Where allowed
by the manufacturer's installation instructions and approved by the
Building Official.
| ||||
(SECTION G2412 GENERAL)
| ||||
G2412.9 (401.9) Identification. Each length of pipe and tubing, as produced by the manufacturer
and prior to use in the field, shall bear the identification of the
manufacturer. Each pipe fitting utilized in a fuel gas system shall
bear the identification of the manufacturer.
| ||||
(SECTION G2439 CLOTHES DRYER
EXHAUST)
| ||||
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.
| ||||
(SECTION G2442 FORCED-AIR WARM-AIR
FURNACES)
| ||||
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 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 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 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 defined 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 (1) cubic foot for each
10 Btu/h (9.6 L/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 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 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 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.
|
Return air may be taken from a bedroom
closet over sixty-four (64) square feet in area.
| |||
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.
|
(CHAPTER 25 PLUMBING ADMINISTRATION)
| ||
(SECTION P2503 INSPECTION AND
TESTS)
| ||
P2503.5.1 Rough plumbing. DWV systems shall be tested on completion of the rough piping installation
by water or 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 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.
| |
P2503.6 Shower liner test. Delete this Section in its entirety.
|
(CHAPTER 26 GENERAL PLUMBING
REQUIREMENTS)
|
(SECTION P2603 STRUCTURAL AND
PIPING PROTECTION)
|
P2603.5.1 Sewer depth. Building sewers that connect to private sewage disposal systems
shall be a minimum of 18 inches (453 mm) below finished grade at the
point of septic tank connection. Building sewers shall be a minimum
of 30 inches (762 mm) below grade.
|
(SECTION P2604 TRENCHING AND
BACKFILLING)
|
P2604.90 Tracer wire or other
utility location technology. Tracer wire or other utility location
technology shall be installed as required by Section 319.033, RSMo.,
and the local utility.
|
(SECTION P2609 MATERIALS EVALUATION
AND LISTING)
|
P2609.1 Identification. Each length of pipe and tubing, as produced by the manufacturer
and prior to use in the field, shall bear the identification of the
manufacturer. Each pipe fitting utilized in a plumbing system shall
bear the identification of the manufacturer.
|
(CHAPTER 28 WATER HEATERS)
|
(SECTION P2108 GENERAL)
|
P2801.8 Water heater seismic
bracing: Delete in its entirety.
|
(CHAPTER 29 WATER SUPPLY AND
DISTRIBUTION)
|
(SECTION P2903 WATER SUPPLY
SYSTEM)
|
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.
|
(SECTION P2904 DWELLING UNIT
FIRE SPRINKLER SYSTEMS)
|
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 standalone system from the water distribution
system.
|
(CHAPTER 30 SANITARY DRAINAGE)
| |||
(SECTION P3002 MATERIALS)
| |||
P3002.2 Building sewer. Building sewer piping shall be as shown in Table P3002.2. All sewer
laterals will be polyvinyl chloride schedule 40 or equivalent as determined
by the City of O’Fallon. Forced main sewer piping shall conform
to one (1) of the standards for ABS plastic pipe, copper, or copper-alloy
tubing, PVC plastic pipe or pressure rated pipe indicated in Table
P3002.2.
|
(CHAPTER 31 VENTS)
| |||
(SECTION P3103 VENT TERMINALS)
| |||
P3103.1 Roof extension. Open vent pipes that extend through a roof shall be terminated not
less than twelve (12) inches (152 mm) above the roof or six (6) inches
(152 mm) above the anticipated snow accumulation, whichever is greater.
Where a roof is to be used for assembly, as a promenade, observation
deck or sunbathing deck or for similar purposes, open vent pipes shall
terminate not less than seven (7) feet (2134 mm) above the roof.
|
(CHAPTER 39 POWER AND LIGHTING
DISTRIBUTION)
| |||
(SECTION E3902 GROUND-FAULT
AND ARC-FAULT CIRCUIT INTERRUPTER PROTECTION)
| |||
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 work areas shall have ground-fault
circuit-interrupter protection for personnel. [210.8(A)(2)]
| |||
Exception: Fastened
in place garage door openers.
| |||
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.
|
Where a simplex receptacle is installed
to serve an installed sump pump.
| ||
E3902.16 Arc-fault circuit-interrupter
protection. Branch circuits that supply 120-volt, single phase,
15- and 20-ampere outlets installed in bedrooms shall be protected
by any of following: [210.12(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 50 feet (15.2 m) for 14 AWG conductors and 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 fist outlet
shall not exceed 50 feet (15.2 m) for 14 AWG conductors and 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 non-metallic
conduit or tubing or Type MC cable is encased in not less than 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 (1) 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 30 feet (9.5 m) in length and does not include any
additional outlets or devices. [210.12(B) exception]
|
(APPENDIX E MANUFACTURED HOUSING
USED AS DWELLINGS)
| ||
(SECTION AE101 SCOPE)
| ||
AE101.1 General. These
provisions shall be applicable only to a manufactured home used as
a single dwelling unit installed on any lot and shall apply to the
following:
| ||
1.
|
Construction, alteration and repair
of any foundation system that is necessary to provide for the installation
of a manufactured home unit.
| |
2.
|
Construction, installation, addition,
alteration, repair or maintenance of the building service equipment
that is necessary for connecting manufactured homes to water, fuel,
or power supplies and sewage systems.
| |
3.
|
Alterations, additions or repairs
to existing manufactured homes. The construction, alteration, moving,
demolition, repair and use of accessory buildings and structures,
and their building service equipment, shall comply with the requirements
of the codes adopted by this jurisdiction. These provisions shall
not be applicable to the design and construction of manufactured homes
and shall not be deemed to authorize either modifications or additions
to manufactured homes where otherwise prohibited.
| |
Exception:
| ||
In addition to these provisions,
new and replacement manufactured homes to be located in flood hazard
areas as established in Table R301.2(1) of the International Residential
Code shall meet the applicable requirements of Section R322 of the
International Residential Code.
| ||
(SECTION AE304 FEES)
| ||
AE304.1 Fees. Fees shall be per section 500.470 of the City of O'Fallon, Municipal Code.
| ||
AE304.2 Plan review fees. Delete in its entirety.
| ||
AE304.3 Other provisions. Delete in its entirety.
| ||
AE304.3.1 Expiration of plan
review. Delete in its entirety.
| ||
AE304.3.2 Investigation fees-work
without a permit. Delete in its entirety.
| ||
AE304.3.2.1 Investigation. Delete in its entirety.
| ||
AE304.3.2.2 Fee. Delete
in its entirety.
| ||
AE304.3.3 Fee refunds. Delete in its entirety.
| ||
AE304.3.3.1 Permit fee erroneously
paid or collected. Delete in its entirety.
| ||
AE304.3.3.2 Permit fee paid
when no work done. Delete in its entirety.
| ||
AE304.3.3.3 Plan review fee. Delete in its entirety.
|