AE101.1 General. Factory-built structures, modular units or closed prefabricated assemblies shall not be acceptable unless they are built within the jurisdiction of the City of St. Peters and are subject to inspection by the Code Official, with the exception of a manufactured home, modular unit, or closed prefabricated assemblies used as a single dwelling unit, and installed per Section 405.170, "R-M" Mobile/Modular Home Residential District. These provisions shall be applicable only to the above described manufactured home, modular unit, or closed prefabricated assemblies used as a single dwelling unit in the "R-M" Mobile/Modular Home Residential District:
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1.
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Construction, alteration and repair
of any foundation system, which is necessary to provide for the installation
of a manufactured home unit.
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2.
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Construction, installation, addition,
alteration, repair or maintenance of the building service equipment
which is necessary for connecting manufactured homes to water, fuel,
or power supplies and sewage systems.
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3.
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Alterations, additions or repairs
to existing manufactured home. The construction, alteration, moving,
demolition, repair and use of accessory buildings and structures and
their building service equipment shall comply with the requirement
of the codes adopted by this jurisdiction.
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These provisions shall not be applicable
to the design and construction of manufactured homes and shall not
be deemed to authorize either modification or additions to manufactured
homes where otherwise prohibited.
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Exception: New and replacement manufactured homes to be located in flood hazard areas are subject to Chapter 410, Floodplain Management of the Municipal Code of the City of St. Peters.
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AE304.1 Permit Fees. (Refer to Attachment
1, Title V, Appendix A of the Municipal Code of the City of St. Peters.)
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AE304.2 — Delete.
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AE304.3 — Delete.
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AE304.3.1 — Delete.
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AE304.3.2 — Delete.
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AE304.3.2.1 — Delete.
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AE304.3.2.2 — Delete.
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AE304.3.3 — Delete.
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AE304.3.3.1 — Delete.
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AE304.3.3.2 — Delete.
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AE304.3.3.3 — Delete.
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Building:
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1.
|
One-story detached accessory structures
used as tool and storage sheds, playhouses and similar uses, provided
the floor area does not exceed one hundred twenty (120) square feet
(11.15 m2).
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2.
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Fences not over six (6) feet (1,829
mm) high.
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3.
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Retaining walls that are not over
four (4) feet (1,219 mm) in height measured from the lowest adjacent
grade to top of the wall, unless supporting a surcharge or impounding
Class I, II or IIIA liquids.
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4.
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Water tanks supported directly upon
grade if the capacity does not exceed five thousand (5,000) gallons
(18,927 L) and the ratio of height to diameter or width does not exceed
two to one (2:1).
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5.
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6.
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Painting, papering, tiling, carpeting,
cabinets, counter tops and similar finish work.
|
7.
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Prefabricated swimming pools that
are less than twenty-four (24) inches (610 mm) deep.
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8.
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Swings and other playground equipment.
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9.
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Window awnings support by an exterior
wall which do not project more than fifty-four (54) inches (372 mm)
from the exterior wall and do not require additional support.
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Electrical:
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1.
|
Listed cord-and-plug connected temporary
decorative lighting.
|
2.
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Reinstallation of attachment plug
receptacles but not the outlets thereof.
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3.
|
Replacement of branch circuit overcurrent
devices of the required capacity in the same location.
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4.
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Electrical wiring, devices, appliances,
apparatus or equipment operating at less than twenty-five (25) volts
and not capable of supplying more than fifty (50) watts of energy.
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5.
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Minor repair work, including the
replacement of lamps or the connection of approved portable electrical
equipment to approved permanently installed receptacles.
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Gas:
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1.
|
Portable heating, cooking or clothes
drying appliances.
|
2.
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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.
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Mechanical:
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1.
|
Portable heating appliances.
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2.
|
Portable ventilation appliances.
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3.
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Portable cooling units.
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4.
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Steam, hot- or chilled-water piping
within any heating or cooling equipment regulated by this code.
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5.
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Replacement of any minor part that
does not alter approval of equipment or make such equipment unsafe.
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6.
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Portable evaporative coolers.
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7.
|
Self-contained refrigeration systems
containing ten (10) pounds (4.54 kg) or less of refrigerant or that
are actuated by motors of one (1) horsepower (746 W) or less.
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8.
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Portable-fuel-cell appliances that
are not connected to a fixed piping system and are not interconnected
to a power grid.
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Plumbing:
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1.
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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.
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2.
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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.
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The Code Official shall not authorize
the refunding of any fee paid, except upon written application filed
by the original permittee not later than one hundred eighty (180)
days after the date of fee payment.
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Exceptions:
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1. Work exempt from permits under Section R105.2.
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2. Accessory building or structures.
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R110.1.2.1 Applications.
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Prior to the occupancy of a dwelling unit upon a change in occupancy
thereof, the owner of such dwelling unit shall make written application
to the building official for a reoccupancy permit on a form to be
furnished by the City for that purpose. Such application shall include
such information as necessary to administer and enforce the provisions
of, and to ensure compliance with, the provisions of Section 110.1.2.2.1
of this code.
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R110.1.2.2 Action on Application.
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The building official shall examine or cause to be examined
applications for reoccupancy permits and amendments thereto, and shall
inspect or cause to be inspected each dwelling unit to be covered
by the reoccupancy permit and all common areas thereto, if any, within
a reasonable time after filing, before a reoccupancy permit is issued.
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R110.1.2.2.1 Reoccupancy Inspections.
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The building official is authorized to and may make reoccupancy inspections of the dwelling unit to be covered by the reoccupancy permit and all common areas thereto, if any, upon a change in occupancy thereof. Such reoccupancy inspections shall be for the purpose of determining whether such dwelling unit and all common areas thereto, if any, comply with the provisions of the City of St. Peters, Missouri, Zoning and Subdivision Codes, as amended, the St. Peters Property Maintenance Code, as amended, and Chapter 215 of the St. Peters City Code, as amended. For purpose of making the reoccupancy inspection, the building official is authorized to enter, examine and survey the dwelling unit and all common areas thereto, if any, by appointment with the knowledge of the owner thereof, and, if occupied, the tenant. Should any owner, tenant, occupant or other person in charge of a dwelling unit, the common areas thereto, or building or structure fail or refuse to permit free access and entry to the dwelling unit and all common areas, if any, under control for any reoccupancy inspection pursuant to this Code, then the building official may seek a search warrant or other appropriate court order authorizing such reoccupancy inspections. Under this Section, common areas shall not be subject to independent inspection but shall only be inspected in conjunction with the reoccupancy inspection of a dwelling unit.
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R110.1.2.3 Reoccupancy Permit And Inspection Fees.
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At the time of filing an application for a reoccupancy permit,
a reoccupancy permit and inspection fee as set out in Appendix A of
this Title shall be charged and collected. No reoccupancy permit shall
be valid until such reoccupancy permit and inspection fee as set out
in Appendix A of this Title has been paid.
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R110.1.2.4 Issuance of Reoccupancy Permit.
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If, upon completion of the reoccupancy inspection of the dwelling unit and the common areas thereto, if applicable, the building official finds that the dwelling unit is in compliance with the City of St. Peters, Missouri, Zoning and Subdivision Codes, as amended, the St. Peters Property Maintenance Code, as amended, and Chapter 215 of the St. Peters City Code, as amended, the building official shall, as soon as practicable, issue a reoccupancy permit therefor which shall contain at least the following:
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1.
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The reoccupancy permit number;
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2.
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The address of the principal building or structure to which
the subject dwelling unit is located;
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3.
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The name and address of the owner;
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4.
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A description of the dwelling unit and common areas, if applicable,
for which the reoccupancy permit is issued;
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5.
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A statement that the described dwelling unit and common areas,
if applicable, have been inspected for compliance with the requirements
of this Code;
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6.
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The date of such reoccupancy inspection;
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7.
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The name of the building official;
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8.
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The edition of the code under which the permit was issued;
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9.
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If an automatic sprinkler system is provided and whether the
sprinkler system is required; and
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10.
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Any special stipulations and conditions of the reoccupancy permit.
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If the building official finds that the dwelling unit is not in compliance with any requirement of the City of St. Peters, Missouri, Zoning and Subdivision Codes, as amended, the St. Peters Property Maintenance Code, as amended, or Chapter 215 of the St. Peters City Code, or any combination or combinations thereof, have not been met or if a violation is found, the building official shall transmit or cause to be transmitted to the owner a written denial specifying the defect(s) or violation(s), or both. If a defect or violation is found, the owner shall be given a reasonable length of time to make repairs and bring the dwelling unit or common areas, if applicable, or both, into compliance prior to reinspection. No final reoccupancy permit shall be issued until the dwelling unit and the common areas thereto, if applicable, complies or comply with the requirements of Section R110.1.2.2.1. Issuance of a reoccupancy permit shall not be construed as an approval of a violation of the provisions of this code or of other ordinances of the City. Reoccupancy permits presuming to give authority to violate or cancel the provisions of this code or other ordinances of the City shall not be valid.
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The provisions of Sections R110.1.1 to R110.1.3 hereof shall
not apply to the following:
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1.
|
Lawful occupancies existing at the time of the effective date
of such Sections; or
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2.
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An owner-occupied dwelling unit used exclusively for residential
purposes, and wherein no home occupation is conducted. For purposes
of Sections R110.1.1 to R110.1.3, the term "owner-occupied dwelling
unit" shall mean a dwelling unit for which the occupant thereof is
expressly named as an owner of the dwelling unit, or is a trustee
or beneficiary of a trust that is expressly named as an owner of the
dwelling unit, all as indicated upon the deed of record on file in
the Office of the Recorder of Deeds of St. Charles County, Missouri.
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1.
|
Walls, projects, openings or penetrations
in walls perpendicular to the line used to determine the fire separation
distance.
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2.
|
Walls of dwellings and accessory
structures located on the same lot.
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3.
|
Detached tool shed 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.
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4.
|
Detached garages accessory to a dwelling
located within two (2) feet (610 mm) of a lot line are permitted to
have roof eave projections not exceeding four (4) inches (102 mm).
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5.
|
Foundation vents installed in compliance
with this code are permitted.
|
6.
|
Cantilevered manufactured fireplaces.
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7.
|
Uncovered decks.
|
1.
|
Where a fire sprinkler system in
accordance with Section P2904 is provided, the common wall shall be
not less than a one-hour fire-resistance-rated wall assembly tested
in accordance with ASTM E 119 or UL 263.
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2.
|
Where a fire sprinkler system in
accordance with Section P2904 is not provided, the common wall shall
be not less than a two-hour fire-resistance-rated wall assembly tested
in accordance with ASTM E 119 or UL 263, or the common wall shall
be two (2) independent one-hour fire-resistance-rated wall assemblies.
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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.
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2.
|
Floor assemblies located directly
over a crawl space not intended for storage or fuel-fired appliances.
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3.
|
Portions of floor assemblies shall
be permitted to be unprotected where complying with the following:
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3.1
|
The aggregate area of the unprotected
floor assembly does not exceed one hundred (100) square feet per HVAC
zone.
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3.2
|
Areas of the floor assembly covered
by HVAC metal plenum, trunk lines, and steel structural beams shall
be considered protected. Gypsum wallboard membrane shall be within
two (2) inches of all previously listed items.
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4.
|
Wood floor assemblies using dimension
lumber or structural composite lumber equal to or greater than two
(2) inch by ten (10) inch (50.8 mm by 254 mm) nominal dimension, or
other approved floor assemblies demonstrating equivalent fire performance.
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1.
|
Exterior balconies less than sixty
(60) square feet (5.6 m2) and only accessible
from a door are permitted to have a landing less than thirty-six (36)
inches (914 mm) measured in the direction of travel.
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2.
|
Doors that are not required egress
doors and are served by a stairway of no more than four (4) risers.
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3.
|
Doors protected by a guard in accordance
with this code.
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4.
|
Doors protected in a manner approved
by the Code Official.
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1.
|
The triangular openings at the open
side of a stair, formed by the riser, tread and bottom rail of a guard,
shall not allow passage of a sphere six (6) inches (153 mm) in diameter.
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2.
|
Guards on the open sides of stairs
shall not have openings which allow passage of a sphere four and three-eighths
(4 3/8) inches (111 mm) in diameter.
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1.
|
Work involving the exterior surfaces
of dwellings, such as the replacement of roofing or siding, or the
addition or replacement of windows or doors, or the addition of a
porch or deck, are exempt from the requirements of this Section.
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2.
|
Installation, alteration or repairs
of plumbing or mechanical systems are exempt from the requirements
of this Section.
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R322.1 — Delete.
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R322.1.1 — Delete.
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R322.1.2 — Delete.
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R322.1.3 — Delete.
|
R322.1.4 — Delete.
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R322.1.4.1 — Delete.
|
R322.1.4.2 — Delete.
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R322.1.5 — Delete.
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R322.1.6 — Delete.
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R322.1.7 — Delete.
|
R322.1.8 — Delete.
|
R322.1.9 — Delete.
|
R322.1.10 — Delete.
|
R322.2 — Delete.
|
R322.2.1 — Delete.
|
R322.2.2 — Delete.
|
R322.2.2.1 — Delete.
|
R322.2.3 — Delete.
|
R322.2.4 — Delete.
|
R322.3 — Delete.
|
R322.3.1 — Delete.
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R322.3.2 — Delete.
|
R322.3.3 — Delete.
|
R322.3.4 — Delete.
|
R322.3.5 — Delete.
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R322.3.5.1 — Delete.
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R322.3.6 — Delete.
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R322.3.7 — Delete.
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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)
| ||||
1,500
|
2,000
|
3,000
|
>4,000
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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: one (1) inch equals 25.4
mm. one (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 twelve-inch
nominal concrete masonry units is permitted.
|
c.
|
Snow Load or Roof Live Load shall
not exceed twenty (20) psf. If load exceeds twenty (20) psf, designs
must be completed by a licensed design professional.
|
1.
|
Where unstable soil or ground water
conditions do not exist, plain concrete foundation walls may be constructed
a minimum of eight (8) inches (203 mm) thick where the wall height
from the top of the footing to the top of the wall does not exceed
eight (8) feet (2,438 mm). A minimum of two (2) No. 4 horizontal reinforcing
bars shall be provided in the top and bottom of plain concrete foundation
walls. A minimum of two(2) No. 5 reinforcing bars shall be provided
around all window and door openings in plain concrete foundation and
basement walls. Bars shall extend a minimum twenty-four (24) inches
(610 mm) beyond the corners of the openings.
|
2.
|
Where unstable soil or ground water
conditions do not exist, plain concrete foundation walls may be constructed
a minimum of ten (10) inches (254 mm) thick where the wall height
from the top of the footing to the top of the wall does not exceed
nine (9) feet (2,743 mm). A minimum of two (2) No. 5 reinforcing bars
shall be place horizontally in the top, middle, and bottom of the
foundation wall. A minimum of two (2) No. 5 reinforcing bars shall
be provided around all window and door openings in plain concrete
foundation and basement walls. Bars shall extend a minimum of twenty-four
(24) inches (610 mm) beyond the corners of the openings.
|
Maximum Wall Height
|
Maximum Depth of Unbalanced Backfill
|
Minimum Nominal Wall Thickness
|
---|---|---|
8'-0"
|
7'-6" or less
|
8" (Note a)
|
9'-0"
|
8'-6" or less
|
10" (Note b)
|
10'0"
|
9'-6" or less
|
12" (Note c)
|
Note a: Concrete foundation walls
may be constructed a minimum of nominal eight (8) inches thick where
the wall height from the top of the footing to the top of the wall
does not exceed eight (8) feet. A minimum of two (2) #4 reinforcing
bars shall be place horizontally in the top and bottom of the foundation
wall. A minimum of two (2) #5 reinforcing bars shall be provided around
all window and door openings in concrete foundation and basement walls;
bars shall extend a minimum of twenty-four (24) inches beyond the
corners of the openings.
|
Note b: Concrete foundation walls
may be constructed a minimum of nominal ten (10) inches thick. A minimum
of two (2) #5 reinforcing bars shall be placed horizontally in the
top, middle, and bottom of the foundation wall. A minimum of two (2)
#5 reinforcing bars shall be provided around all window and door openings
in concrete foundation and basement walls; bars shall extends 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 twelve (12) inches thick.
A minimum of three (3) #5 reinforcing bars shall be placed horizontally
in the top, middle, and bottom of the foundation wall. A minimum of
two (2) #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.
|
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
405.1.2 are approved as an alternative method to meet the requirements
of this Section.
|
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 one thousand five hundred (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 seven hundred fifty (750) pounds
(3336 N).
|
3.
|
Using knee braces extending from
the floor system to the posts.
|
Table 602.7.5
| ||
---|---|---|
Ultimate Design Wind Speed and Exposure
Category
| ||
Maximum Header Span
(feet)
|
<140mph, Exposure B
or <130mph, Exposure C
|
<115mph, 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 <140mph, Exposure B.
|
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 twenty-four (24) inches (607 mm) beyond the foundation or bearing
wall below.
|
3.
|
Wall height shall not be greater
than a nominal twelve (12) feet when using the minimum required bracing
lengths specified in Table 602.12.4.
|
4.
|
The building shall have a roof eave-to-ridge
height of fifteen (15) feet (4,572 mm) or less.
|
5.
|
Exterior walls shall have gypsum
board with a minimum thickness of one-half (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 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.
|
7.
|
Cripple walls shall not be permitted
in three-story buildings.
|
1.
|
Wood structural panels with a minimum
thickness of seven-sixteenths (7/16) inch fastened in accordance with
Table R602.3(3).
|
2.
|
Structural fiberboard sheathing with
a minimum thickness of one-half (1/2) inch (12.7 mm) fastened in accordance
with Table R602.3(1).
|
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 three (3) feet (914 mm). For walls with heights greater than a
nominal ten (10) feet, the minimum length of a bracing unit shall
be four (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 four (4) feet (1,219 mm).
|
1.
|
For open valleys (valley lining exposed)
lined with metal, the valley lining shall be not less than twenty-four
(24) inches (610 mm) wide and of any of the corrosion-resistant metals
in Table R905.2.8.2.
|
2.
|
For open valley, 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 eighteen (18) inches (457 mm) and the top layer not less
than thirty-six (36) inches (914 mm) wide.
|
3.
|
For closed valleys (valley covered
with shingles), valley lining of two (2) ply of No. 15 felt complying
with ASTM D 226 Type I, ASTM D 4869 Type I, or ASTM D 6757, or valley
lining as described in Item 1 and 2 shall be permitted. Self-adhering
polymer modified bitumen underlayment complying with ASTM D 1970 shall
be permitted in lieu of the lining material.
|
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.
|
Table N1102.1.2 (R402.1.2)
| ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Insulation and Fenestration Requirements
by Componenta
| ||||||||||
Climate Zone
|
Fenest- ration U-Factorb
|
Skylightb U-Factor
|
Glazed Fenest- ration SHGCb,c
|
Ceiling R-Value
|
Wood Frame Wall R-Value
|
Mass Wall R-Valuei
|
Floor R-Value
|
Base- mentc Wall R-Value
|
Slabd R-Value
and Depth
|
Crawl Spacec Wall R-Value
|
1
|
NR
|
0.75
|
0.25
|
30
|
13
|
3/4
|
13
|
0
|
0
|
0
|
2
|
0.40
|
0.65
|
0.25
|
38
|
13
|
4/6
|
13
|
0
|
0
|
0
|
3
|
0.35
|
0.55
|
0.25
|
38
|
20 or 13 + 5h
|
8/13
|
19
|
5/13f
|
0
|
5/13
|
4 except Marine
|
0.40
|
0.55
|
NR
|
38
|
13
|
8/13
|
19
|
0j
|
10,2 ft
|
10/13
|
5 and Marine 4
|
0.32
|
0.55
|
NR
|
49
|
20 or 13 + 5h
|
13/17
|
30g
|
15/19
|
10, 2 ft
|
15/19
|
6
|
0.32
|
0.55
|
NR
|
49
|
20 + 5
Or 13 + 10h
|
15/20
|
30g
|
15/19
|
10, 4 ft
|
15/19
|
7 and 8
|
0.32
|
0.55
|
NR
|
59
|
20 + 5
Or 13 + 10h
|
19/21
|
38g
|
15/19
|
10, 4 ft
|
15/19
|
For SI: one (1) foot — 304.8
mm.
| |
---|---|
a.
|
R-values are minimums. U-factors
and SHGC are maximums. When insulation is installed in a cavity which
is less than the label or design thickness of the insulation, the
installed R-value of the insulation shall not be less than the R-value
specified in the table.
|
b.
|
The fenestration U-factor column
excludes skylights. The SHGC column applies to all glazed fenestration.
|
Exception: Skylights may be excluded
from glazed fenestration SHGC requirements in Climate Zones 1 through
3 where the SHGC for such skylights does not exceed 0.30.
| |
c.
|
"15/19" means R-15 continuous insulation
on the interior or exterior of the home or R-19 cavity insulation
at the interior of the basement wall. "15/19" shall be permitted to
be met with R-13 cavity insulation on the interior of the basement
wall plus R-5 continuous insulation on the interior or exterior of
the home. "10/13" means R-10 continuous insulation on the interior
or exterior of the home or R-13 cavity insulation at the interior
of the basement wall.
|
d.
|
R-5 shall be added to the required
slab edge R-values for heated slabs. Insulation depth shall be the
depth of the footing or two (2) feet, whichever is less in Zones 1
through 3 for heated slabs.
|
e.
|
There are no SHGC requirements in
the Marine Zone.
|
f.
|
Basement wall insulation is not required
in warm-humid locations as defined by Figure N1101.10 or Table N1101.10.
|
g.
|
Or insulation sufficient to fill
the framing cavity, R-19 minimum.
|
h.
|
The first value is cavity insulation,
the second value is continuous insulation, so "13 + 5" means R-13
cavity insulation plus R-5 continuous insulation.
|
i.
|
The second R-value applies when more
than half of the insulation is on the interior of the mass wall.
|
j.
|
Band boards and cripple walls shall
be insulated to R-13.
|
Table N1102.4.1.1 (402.4.1.1)
Air Barrier and Insulation Installation
| ||
---|---|---|
Component
|
Air Barrier Criteria
|
Insulation Installation Criteria
|
General Requirements
|
A continuous air barrier shall be
installed in the building envelope.
The exterior thermal envelope contains
a continuous air barrier.
Breaks or joints in the air barrier
shall be sealed.
|
Air-permeable insulation shall not
be used as a sealing material.
|
Ceiling/attic
|
The air barrier in any dropped ceiling/soffit
shall be aligned with the insulation and any gaps in the air barrier
sealed.
Access openings, drop down stairs
or knee wall doors to unconditioned attic spaces shall be sealed.
|
The insulation in any dropped ceiling/soffit
shall be aligned with the air barrier.
|
Walls
|
The junction of the foundation and
sill plate shall be sealed.
The junction of the top plate and
the top of the exterior walls shall be sealed.
Knee walls shall be sealed.
|
Cavities within corners and headers
of frame walls shall be insulated by completely filling the cavity
with a material having a thermal resistance of R-3 per inch minimum.
Exterior thermal envelope insulation
for framed walls shall be installed in substantial contact and continuous
alignment with the air barrier.
|
Windows, skylights and doors
|
The space between window/door jambs
and framing, and skylights and framing shall be sealed.
| |
Rim joists
|
Rim joists shall include the air
barrier.
|
Rim joists shall be insulated.
|
Floors (including above garage and
cantilevered floors)
|
The air barrier shall be installed
at any exposed edge of insulation.
|
Floor framing cavity insulation shall
be installed to maintain permanent contact with the underside of subfloor
decking, or floor framing cavity insulation shall be permitted to
be in contact with the top side of sheathing, or continuous insulation
installed on the underside of floor framing; and extends from the
bottom to the top of all perimeter floor framing members.
|
Crawl space walls
|
Exposed earth in unvented crawl spaces
shall be covered with Class I vapor retarder with overlapping joists
taped.
|
Where provided instead of floor insulation,
insulation shall be permanently attached to the crawl space walls.
|
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.
| |
Plumbing and wiring
|
Batt insulation shall be cut neatly
to fit around wiring and plumbing in exterior walls, or insulation
that on installation readily conforms to available space shall extend
behind piping and wiring.
| |
Shower/tub on exterior wall
|
The air barrier installed at exterior
walls adjacent to showers and tubs shall separate them from showers
and tubs.
|
Exterior walls adjacent to showers
and tubs shall be insulated.
|
Electrical/phone box on exterior
walls
|
The air barrier shall be installed
behind electrical or communication boxes or air-sealed boxes shall
be installed.
| |
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.
|
1.
|
Exterior windows and doors, fireplace
and stove doors shall be closed, but not sealed, beyond the intended
weatherstripping or other infiltration control measures.
|
2.
|
Dampers including exhaust, intake,
makeup air, backdraft and flue dampers shall be closed, but not sealed
beyond intended infiltration control measures.
|
3.
|
Interior doors, if installed at the
time of the test, shall be open.
|
4.
|
Exterior doors for continuous ventilation
systems and heat recovery ventilators shall be closed and sealed.
|
5.
|
Heating and cooling systems, if installed
at the time of the test, shall be turned off.
|
6.
|
Supply and return registers, if installed
at the time of the test, shall be fully open.
|
1.
|
Direct vent appliances with both
intake and exhaust pipes installed continuous to the outside.
|
2.
|
Fireplaces and stoves complying with
Sections N1102.4.2 and R1006.
|
3.
|
Mechanical equipment in an unfinished
space.
|
1.
|
Rough-in test: Total leakage shall
be measured with a pressure differential of one-tenth (0.1) inch w.g.
(25 Pa) across the system, including the manufacturer's air handler
enclosure if installed at the time of the test. All registers shall
be taped or otherwise sealed during the test.
|
2.
|
Postconstruction test: Total leakage
shall be measured with a pressure differential of one-tenth (0.1)
inch w.g. (25 Pa) across the entire system, including the manufacturer's
air handler enclosure. Registers shall be taped or otherwise sealed
during the test.
|
Exception: A duct air leakage test
shall not be required where ducts and air handlers are located entirely
within the building thermal envelope.
|
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.
|
Table N1105.5.2(1) [R405.5.2(1)]
Specifications for the Standard Reference
and Proposed Designs
| ||
---|---|---|
Building Component
|
Standard Reference Design
|
Proposed Design
|
Above-grade walls
|
Type: mass wall if proposed wall
is mass; otherwise wood frame
|
As proposed
|
Gross area: same as proposed
|
As proposed
| |
U-factor: as specified in Table N1102.1.4
|
As proposed
| |
Solar absorptance = 0.75
|
As proposed
| |
Remittance = 0.90
|
As proposed
| |
Basement and crawl space walls
|
Type: same as proposed
|
As proposed
|
Gross area: same as proposed
|
As proposed
| |
U-factor: from table N1102.1.4, with
insulation layer on interior side of walls
|
As proposed
| |
Above-grade floors
|
Type: wood frame
|
As proposed
|
Gross area: same as proposed
|
As proposed
| |
U-factor: as specified in Table N1102.1.4
|
As proposed
| |
Ceilings
|
Type: wood frame
|
As proposed
|
Gross area: same as proposed
|
As proposed
| |
U-factor: as specified in Table N1102.1.4
|
As proposed
| |
Roofs
|
Type: composition shingle on wood
sheathing
|
As proposed
|
Gross area: same as proposed
|
As proposed
| |
Solar absorptance = 0.75
|
As proposed
| |
Emittance = 0.90
|
As proposed
| |
Attics
|
Type: vented with aperture = 1 ft2 per 300 ft2 ceiling area
|
As proposed
|
Type: same as proposed
|
As proposed
| |
Foundations
|
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 four (4) cardinal compass orientations (N, E., S & 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) SHGX = 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 five (5) air
changes per hour in Climate Zone 4. 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 = conditional 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 rate 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 = conditional 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.
|
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 one
tenths (0.1) inches w.g. (25 Pa)
|
As tested or specified in Table R405.5.2(2)
if not tested. Duct insulation shall be as proposed
|
Thermostat
|
Type: Manual, cooling temperature
setpoint = 75° F.
Heating temperature setpoint = 72°
F.
|
Same as standard reference
|
For SI: 1 square foot = 0.93 m2,
1 British thermal unit = 1055 J, 1 pound per square foot = 4.88 kg/m2,
1 gallon (US) = 3.785 L, °C = (°F-32)/1.8, 1 degree = 0.79
rad.
| |
a.
|
Where required by the Code Official,
testing shall be conducted by an approved party. Hourly calculations
as specified in the ASHRAE Handbook of Fundamentals, or the equivalent
shall be used to determine the energy loads resulting from infiltration.
|
b.
|
The combined air exchange rate for
infiltration and mechanical ventilation shall be determined in accordance
with Equation 43 of 2001 ASHRAE Handbook of Fundamentals, page 26.19
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° (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 heat, 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.
|
1.
|
Anchorage and strapping shall be
designed to resist a horizontal force equal to one-third (1/3) of
the operating weight of the water heater storage tank, acting in any
horizontal direction. Strapping shall be at points within the upper
one-third (1/3) and lower one-third (1/3) of the appliance's vertical
dimensions. At the lower point, the strapping shall maintain a minimum
distance of four (4) inches (102 mm) above the controls.
|
2.
|
The anchorage strapping shall be
in accordance with the appliance manufacturer's recommendations.
|
1.
|
An auxiliary drain pan with a separate
drain shall be installed under the coils on which condensation will
occur. The auxiliary pan drain shall discharge to a conspicuous point
of disposal to alert occupants in the event of a stoppage of the primary
drain. The pan shall have a minimum depth of one and one-half (1.5)
inches (38 mm), shall be not less than three (3) inches (76 mm) larger
than the unit or the coil dimensions in width and length and shall
be constructed of corrosion-resistant material. Galvanized sheet steel
pans shall have a minimum thickness of not less than (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 rain pan, located at a point higher than the primary
drain line connection and below the overflow rim of such pan.
|
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 except
as allowed 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 air supply.
| |
7.2.
|
These cavities or spaces shall not
be a part of required fire-resistance-rated assembly.
| |
7.3.
|
Stud wall cavities shall not convey
air from more than one (1) floor level.
| |
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.
|
Table M1601.1.1
| ||||
---|---|---|---|---|
Gages of Metal Ducts and Plenums
Used For Heating or Cooling
| ||||
Type of Duct
|
Size
(inches)
|
Minimum Thickness
(inch)
|
Equivalent Galvanized Sheet
|
Approximate Aluminum B & S Gage
|
Round ducts and enclosed rectangular
ducts
|
14 or less
|
0.013
|
30
|
26
|
over 14
|
0.016
|
28
|
24
| |
Exposed rectangular ducts
|
14 or less
|
0.016
|
28
|
24
|
over 14
|
0.019
|
26
|
22
|
For S1 (1 inch = 25.4 mm).
|
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 seam in ducts operating at static pressure
less than two (2) inches of water column (500 Pa) pressure classification
shall not require additional closure systems.
|
1.
|
Openings shall not be located less
than ten (10) feet (3,048 mm) measured in any direction from an open
combustion chamber or draft hood of another appliance located in the
same room or space.
|
2.
|
Return and transfer openings shall
be sized in accordance with the appliance or equipment manufacturer's
installation instructions, Manual D or the design of the registered
design professional.
|
3.
|
Return air shall not be taken from
a bathroom, toilet room, kitchen, garage, mechanical room, boiler
room, furnace room or unconditioned attic.
|
Exceptions:
| |
1.
|
Taking return air from a kitchen
is not prohibited where such return air openings serve the kitchen
only, and are located not less than ten (10) feet (3,048 mm) from
the cooking appliances.
|
2.
|
Dedicated forced-air systems serving
only the garage shall not be prohibited from obtaining return air
from the garage.
|
3.
|
Taking return air from an unconditioned
crawl space shall not be accomplished through a direct connection
to the return side of a forced-air furnace. Transfer openings in the
crawl space enclosure shall not be prohibited.
|
4.
|
Return air from one (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.
|
1.
|
Closer than ten (10) feet (3,048
mm) from an appliance vent outlet, a vent opening from a plumbing
drainage system or the discharge outlet of an exhaust fan, unless
the outlet is three (3) feet (914 mm) above the outside air inlet.
|
2.
|
Where there is the presence of objectionable
odors, fumes or flammable vapors; or where located less than ten (10)
feet (3,048 mm) above the surface of any abutting public way or driveway;
or where located at grade level by a sidewalk, street, alley or driveway.
|
3.
|
A hazardous or insanitary location
or a refrigeration machinery room as identified in the International
Mechanical Code.
|
4.
|
A room or space, the volume of which
is less than twenty-five percent (25%) of the entire volume served
by such system. Where connected by a permanent opening having an area
sized in accordance with Section G2442.2, adjoining rooms or spaces
shall be considered as a single room or space for the purpose of determining
the volume of such rooms or spaces.
|
Exception: The minimum volume requirement
shall not apply where the amount of return air taken from a room or
space is less than or equal to the amount of supply air delivered
to such room or space.
|
5.
|
A room or space containing an appliance
where such a room or space serves as the sole source of return air.
|
Exception: This shall not apply where:
|
1.
|
The appliance is a direct-vent appliance
or an appliance not requiring a vent in accordance with Section G2425.8.
| |
2.
|
The room or space complies with the
following requirements:
| |
2.1
|
The return air shall be taken from
a room or space having a volume exceeding one (1) cubic foot for each
ten (10) Btu/h (9.6L/W) of combined input rating of all fuel-burning
appliances therein.
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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.
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2.3
|
Return-air inlets shall not be located
within ten (10) feet (3,048 mm) of a draft hood in the same room or
space or the combustion chamber of any atmospheric burner appliance
in the same room or space.
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3.
|
Rooms or spaces containing solid
fuel-burning appliances, provided that return-air inlets are located
not less than ten (10) feet (3,048 mm) from the firebox of such appliances.
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6.
|
A closet, bathroom, toilet room,
kitchen, garage, boiler room, furnace room or unconditioned attic.
|
Exceptions:
| |
1.
|
Where return air intakes are located
not less than ten (10) feet (3,048 mm) from cooking appliances and
serve only the kitchen area, taking return air from a kitchen area
shall not be prohibited.
|
2.
|
Dedicated forced-air systems serving
only a garage shall not be prohibited from obtaining return air from
the garage.
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3.
|
Where a closet is provided with a
supply register, taking return air from the closet shall not be prohibited
where such closet is sixty-four (64) square feet or greater.
|
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.
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1.
|
Water test. Each section shall be
filled with water to a point not less than five (5) feet (1,524 mm)
above the highest fitting connection in that section, or to the highest
point in the completed system. Water shall be held in the section
under test for a period of fifteen (15) minutes. The system shall
prove leak free by visual inspection.
|
2.
|
Air test. The portion under test
shall be maintained at a gauge pressure of five (5) pounds per square
inch (psi) (34 kPa) or ten (10) inches of mercury column (34 kPa).
This pressure shall be held without introduction of additional air
for a period of fifteen (15) minutes.
|
1.
|
Not be directly connected to the
drainage system.
|
2.
|
Discharge through an air gap located
in the same room as the water heater.
|
3.
|
Not be smaller than the diameter
of the outlet of the valve served and shall discharge full size to
the air gap.
|
4.
|
Serve a single relief device and
shall not connect to piping serving any other relief device or equipment.
|
5.
|
Discharge to the floor, to the pan
serving the water heater or storage tank, to a waste receptor or to
the outdoors.
|
6.
|
Discharge in a manner not to be a
hazard; does not cause personal injury, structural damage, or otherwise
a nuisance.
|
7.
|
Discharge to a termination point
that is readily observable by the building occupants.
|
8.
|
Not be trapped.
|
9.
|
Be installed to flow by gravity.
|
10.
|
Terminate not more than six (6) inches
(152 mm) and not less than two (2) times the discharge pipe diameter
above the floor or waste receptor flood level rim.
|
11.
|
Not have a threaded connection at
the end of the piping.
|
12.
|
Not have valves or tee fittings.
|
13.
|
Be constructed of those materials
indicated in Section P2906.5 or materials tested, rated and approved
for such use in accordance with ASME A112.4.1.
|
14.
|
Be one (1) nominal size larger than
the size of the relief-valve outlet, where the relief-valve discharge
piping is constructed of PEX or PE-RT tubing. The outlet end of such
tubing shall be fastened in place.
|
1.
|
A receptacle supplying only a permanently
installed fire alarm or burglar alarm system. Receptacles installed
in accordance with this exception shall not be considered as meeting
the requirements of Section E3901.9.
|
2.
|
Fastened in place appliances or outlets
designated for refrigerators/freezers.
|
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 are-fault circuit-interrupter
installed at the first outlet box on the branch-circuit where all
of the following conditions are met:
| |
3.1
|
The branch-circuit wiring shall be
continuous from the branch-circuit overcurrent device to the outlet
branch-circuit arc-fault circuit-interrupter.
| |
3.2
|
The maximum length of the branch-circuit
wiring from the branch-circuit overcurrent device to the first outlet
shall not exceed fifty (50) feet (152 m) for 14 AWG conductors and
seventy (70) feet (21.3 m) for 12 AWG conductors.
| |
3.3
|
The first outlet box in the branch-circuit
shall be marked to indicate that it is the first outlet of the circuit.
[210.12(A)(3)]
| |
4.
|
A listed outlet branch-circuit type
arc-fault circuit-interrupter installed at the first outlet on the
branch circuit in combination with a listed branch-circuit overcurrent
protective device where all of the following conditions are met:
| |
4.1
|
The branch-circuit wiring shall be
continuous from the branch-circuit overcurrent device to the outlet
branch-circuit arc-fault circuit-interrupter.
| |
4.2
|
The maximum length of the branch-circuit
wiring from the branch-circuit overcurrent device to the first outlet
shall not exceed fifty (50) feet (15.2 m) for 14 AWG conductors and
seventy (70) feet (21.3 m) for 12 AWG conductors.
| |
4.3
|
The first outlet box in the branch-circuit
shall be marked to indicate that it is the first outlet on the circuit.
| |
4.4
|
The combination of the branch-circuit
overcurrent device and outlet branch-circuit AFCI shall be identified
as meeting the requirements for a system combination-type AFCI and
shall be listed as such. [210.12(A)(4)]
| |
5.
|
Where metal outlet boxes and junction
boxes and RMC, IMC, EMT, Type MC or steel-armored Types AC cables
meeting the requirements of Section E3908.8, metal wireways or metal
auxiliary gutters are installed for the portion of the branch-circuit
between the branch-circuit overcurrent device and the first outlet,
a listed outlet branch-circuit type AFCI installed at the first outlet
shall be considered as providing protection for the remaining portion
of the branch-circuit. [210.12(A)(5)]
| |
6.
|
Where a listed metal or non-metallic
conduit or tubing or Type MC cable is encased in not less than two
(2) inches (50.8 mm) of concrete for the portion of the branch-circuit
between the branch-circuit overcurrent device and the first outlet,
a listed outlet branch-circuit type AFCI installed at the first outlet
shall be considered as providing protection for the remaining portion
of the branch circuit. [210.12(A)(6)]
|
Exception: AFCI protection is not
required for an individual branch-circuit supplying only a fire alarm
system where the branch-circuit is wired with metal outlet and junction
boxes and RMC, IMC, EMT or steel-sheathed armored cable Type AC or
Type MC meeting the requirements of Section E3908.8.
|
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.
|
Exception: AFCI protection shall
not be required where the extension of the existing conductors is
not more than thirty (30) feet (9.5 m) in length and does not include
any additional outlets or devices. [210.12(B) Exception]
|