R101.1. Delete and insert in lieu thereof the following: Title.
These provisions shall be known as the Residential Code for One- and
Two-family Dwellings of Jefferson County, Missouri, and shall be cited
as such and will be referred to herein as "this code."
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R102.7. Delete and insert in lieu thereof the following: Existing
Structures. The legal occupancy of any structure existing on the date
of adoption of this code shall be permitted to continue without change,
except as is specifically covered in this code, the International
Fire Code, or as is deemed necessary by the building official for
the general safety and welfare of the occupants and the public.
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R103.1. Delete entire section.
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R105.2. Delete and insert in lieu thereof the following: 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 Jefferson County, Missouri. Permits shall not
be required for the following:
|
Building:
| |
1.
|
One-story detached accessory structures, provided that the floor
area does not exceed two hundred (200) square feet.
|
2.
|
Fences not over eight (8) feet (2,438 mm) high.
|
3.
|
Retaining walls that are not over six (6) feet in height measured
from the finished grade to the top of the wall, excluding the cap,
unless supporting a surcharge.
|
4.
|
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 2 to 1.
|
5.
|
Sidewalks, driveways, patios and door landing pads.
|
6.
|
Painting, papering, tiling, carpeting, cabinets, counter tops,
replacement of flooring, trim, finish and similar finish work.
|
7.
|
Prefabricated swimming pools that are less than twenty four
(24) inches (610 mm) deep.
|
8.
|
Swings and other playground equipment.
|
9.
|
Window awnings supported by an exterior wall that do not project
more than fifty-four (54) inches (1,372 mm) from the exterior wall
and do not require additional support.
|
10.
|
Decks not exceeding two hundred (200) square feet in area, that
are not more than thirty (30) inches (762 mm) above grade at any point,
are not attached to a dwelling do not serve the exit door required
by Section R311.4.
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11.
|
Single family residential roof replacement, replacement roofing
that involves the shingles, the underlayment and/or the sheathed decks.
|
12.
|
Replacement of siding.
|
13.
|
Replacement of doors and/or windows provided opening size and
operation do not change.
|
14.
|
Residential kitchen appliance replacement.
|
15.
|
Hot water heater replacement.
|
16.
|
Garage door and opener replacement.
|
17.
|
Minor repairs as referenced in Section 105.2.2.
|
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 ten (10) pounds
(4.54 kg) or less of refrigerant or that are actuated by motors of
one (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.
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Plumbing:
| |
1.
|
The stopping of leaks in drains, water, soil, waste or vent
pipe.
|
2.
|
The clearing of stoppages or the repairing of leaks in pipes,
valves or fixtures, and the removal and reinstallation of existing
fixtures.
|
R105.3.1.1. Delete entire section.
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R106.1. Delete and insert in lieu thereof the following: Submittal
Documents. Submittal documents shall include any form signed by the
purchaser of any single-family dwelling or residence or multi-unit
dwelling of four (4) or fewer units stating that prior to entering
into a purchase contract the purchaser was offered by the builder
the option to have fire sprinklers installed in the structure at the
purchaser's expense. The construction documents should be prepared
by a registered design professional.
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R106.1.1. Insert the following additional sentence: Construction
documents shall be to scale and of sufficient clarity. Construction
documents for new one- and two-family dwellings shall require the
name and contact information of the architect, draftsman, or individual
who prepared said documents.
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R106.3.1. Delete and insert in lieu thereof the following: 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 (1) set of construction
documents so reviewed shall be retained by the building official.
The other set may be kept at the site of work or made available at
the time of inspection and shall be open to inspection by the building
official or a duly authorized representative.
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R110. Delete entire section.
|
R111. Delete entire section. (Refer to Jefferson County Building Code Section 500.270).
|
R112. Delete entire section. (Refer to Jefferson County Building Code Section 500.280).
|
R113. Delete entire section. (Refer to Jefferson County Building Code Section 500.300).
|
R114. Delete entire section. (Refer to Jefferson County Building Code Section 500.310).
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R202. Insert the following: CODE OFFICIAL. The officer or other
designated authority charged with the administration and enforcement
of this Code.
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R202. SPLINE. Delete and insert in lieu thereof the following:
SPLINE. A manufacturer approved connector used to connect two (2)
structural insulated panels. The strip (spline) fits into a groove
cut into the vertical edges of the two (2) structural insulated panels
to be joined. Splines are used behind each facing of the structural
insulated panels being connected as shown in Figure R613.8.
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R202. STORY ABOVE GRADE PLANE. Delete and insert in lieu thereof
the following: STORY ABOVE GRADE PLANE. Any story having its finished
floor surface entirely above grade plane, or in which the finished
surface of the floor next above is:
| ||
1.
|
More than six (6) feet (1,829 mm) above grade plane, and
| |
2.
|
Approximately six (6) feet (1,829 mm) above the finished ground
level for approximately fifty percent (50%) of the total building
perimeter, and
| |
3.
|
More than twelve (12) feet (3,658 mm) above the finished ground
level at any point.
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TABLE R301.2(1). Delete and insert in lieu thereof
the following:
| |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Table R301.2(1)
| |||||||||||||
Climatic and Geographic Design Criteria
| |||||||||||||
Wind Design
|
Subject to Damage Form
| ||||||||||||
Ground Snow Load
|
Speedd
(mph)
|
Topo-graphic effectsk
|
Special wind region1
|
Wind-borne debris zonem
|
Seismic Design Cate-goryf
|
Wea-theringa
|
Frost line depth b
|
Ter-mitee
|
Winter Design Temp a
|
Ice Barrier Under-layment Re-quiredb
|
Flood Haz-ardsg
|
Air Freez-ing Indexl
|
Mean Annual Tempj
|
20
|
115 (51)
|
NO
|
NO
|
NO
|
C
|
SEVERE
|
30
|
NO
|
6
|
NO
|
1,000
|
55.2
|
For SI: 1 pound per square foot = 0.0479kPa, 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 C34, C55, C62, C73, C90, C129, C145, C216 or C652.
|
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 30, 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 ninety-seven and one-half percent (97 1/2%)
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.
|
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%) value on the National
Climatic Data Center data table "Air Freezing Index — USA Method
(Base 32° F.)."
|
i.
|
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.)."
|
j.
|
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.
|
k.
|
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.
|
l.
|
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."
|
R302.1. Delete and insert in lieu thereof the following: Exterior
walls. Construction, projections, openings and penetrations of exterior
walls of dwellings and accessory buildings shall comply with Table
R302.1(1) as amended; or dwellings equipped throughout with an automatic
sprinkler system installed in accordance with Section P2904 shall
comply with Table R302.1(2).
| ||
Exceptions:
| ||
1.
|
Walls, projections, openings or penetrations in walls perpendicular
to the line used to determine the fire separation distance.
| |
2.
|
Walls of dwellings and accessory structures located on the same
lot.
| |
3.
|
Detached tool sheds and storage sheds, playhouses and similar
structures exempted from permits are not required to provide wall
protection based on location on the lot. Projections beyond the exterior
wall shall not extend over the lot line.
| |
4.
|
Detached garages accessory to a dwelling located within two
(2) feet (610 mm) of a lot line are permitted to have roof eave projections
not exceeding four (4) inches (102 mm).
| |
5.
|
Foundation vents installed in compliance with this code are
permitted.
| |
6.
|
Cantilevered manufactured fireplaces.
| |
7.
|
Roof eave overhangs.
| |
8.
|
Uncovered decks.
|
Table R302.1(1)
| |||
---|---|---|---|
Exterior Walls
| |||
Exterior Wall Element
|
Minimum Fire-Resistance Rating
|
Minimum Fire Separation Distance
| |
TABLE R302.1(1). Delete and insert in lieu thereof the following:
| |||
Walls
|
Fire-resistance rated
|
1 hour - tested in accordance with ASTM E 119 or UL 263 with
exposure from both sides
|
0 Feet to < 3 Feet
|
Not fire-resistance rated
|
0 hours
|
> 3 Feet
| |
Projections
|
Fire-resistance rated
|
1 hour on the undersidea,b
|
2 Feet
|
Not fire-resistance rated
|
0 hours
|
3 Feet
| |
Openings in walls
|
Not allowed
|
N/A
|
< 3 Feet
|
25% maximum of wall area
|
0 hours
|
3 Feet
| |
Unlimited
|
0 hours
|
3 Feet
| |
Penetrations
|
All
|
Comply with Section R302.4
|
<3 Feet
|
None required
|
3 Feet
| ||
For SI: 1 foot = 304.8 mm
|
N/A = Not Applicable.
| ||
a.
|
Roof eave fire-resistance rating shall be permitted to be reduced
to zero (0) hours on the underside of the eave if fireblocking is
provided from the wall top plate to the underside of the roof sheathing.
| |
b.
|
Roof eave fire-resistance rating shall be permitted to be reduced
to zero (0) hours on the underside of the eave provided that gable
vent openings are not installed.
|
R302.2(2) Townhouses. Delete subparagraph 2 and insert in lieu
thereof the following:
| ||
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.
|
R302.5.1. Delete and insert in lieu thereof the following: 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 one and three-eights (1 3/8) inches (35 mm) in thickness,
solid or honeycomb-core steel doors not less than one and three-eights
(1 3/8) inches (35 mm) thick, or twenty-minute fire-rated doors.
|
R302.6. Delete and insert in lieu thereof the following: Dwelling-garage
fire separation. The garage shall be separated by five-eights (5/8)
inch fire code gypsum board, type X. Openings in garage walls shall
comply with Section R302.5. Attachment of gypsum board shall comply
with Table R702.3.5. The wall separate provisions of Table R302.6
shall not apply to garage walls that are perpendicular to the adjacent
dwelling unit wall.
|
R302.13. Delete entire section.
|
R303.3. Delete and insert in lieu thereof the following: Bathrooms.
Bathrooms, water closet compartments and other similar rooms shall
be provided with aggregate glazing area in windows of not less than
three (3) square feet (0.3 m2), one-half
(1/2) of which must be openable.
| |
Exception: The glazed areas shall not be required where artificial
light and a local exhaust system are provided. The minimum local exhaust
rates shall be determined in accordance with Section M1507. Exhaust
air from the space shall be exhausted directly to the outdoors, to
a ventilated soffit, or a gabled end vent.
|
R303.4. Delete and insert in lieu thereof the following: Mechanical
ventilation. Where the air infiltration rate of a dwelling unit is
three (3) air changes per hour or less where tested with a blower
door at a pressure of 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. Delete and insert in lieu thereof the following: Exhaust
openings. Exhaust air shall not be directed below six (6) feet and
eight (8) inches onto public walkways.
|
R303.8. Delete and insert in lieu thereof the following: Exterior
stairway illumination. Exterior stairways shall be provided with an
artificial light source. Exterior stairways providing access to a
basement from the outdoor grade level shall be provided with an artificial
light source located at the bottom landing of the stairway.
|
R309.1. Delete and insert in lieu thereof the following: Floor
surface. Garage floor surfaces shall be of approved non-combustible
material. The area of floor used for parking of automobiles or other
vehicles shall be sloped to facilitate the movement of liquids to
the main vehicle entry doorway. In private garages with front or rear
entry located beneath habitable rooms the floor at the rear shall
be a minimum of two (2) inches lower than the adjacent basement floor.
In private garages with end entry located beneath habitable rooms
the floor shall be a minimum of four (4) inches lower than the adjacent
basement floor. In private garages attached side-by-side to rooms,
the floor at the rear shall be a minimum of two (2) inches lower than
the house foundation wall. All floors Minimum thickness of garage
floors shall be four (4) inch concrete with one-half (1/2) inch rebar
two (2) foot on center each way or six (6) inches by six (6) inches
by ten (10) inches welded wire. The above specifications shall also
apply to detached garages.
|
R309.2. Delete the last sentence and insert in lieu thereof
the following: The area of floor used for parking of automobiles or
other vehicles shall be sloped to facilitate the movement of liquids
to the main vehicle entry doorway.
|
R309.4.1. Insert the following: R309.4.1. Pavilion: Pavilion
structures shall be open on at least two (2) sides. If motorized equipment
(vehicle, lawnmower, etc.) are stored underneath, the structure becomes
a "Carport" and comes under the provisions of Section 309.2.
|
A R309.4.2. Insert the following: R309.4.2. Utility Buildings:
Utility Buildings shall be located a minimum distance of fifty (50)
feet from any residence. The structure is a "Garage" if any of the
following apply: located closer than fifty (50) feet from any residence
or if motorized equipment (vehicle, lawnmower, etc.) are stored inside
this structure and shall be built under the provision of Sections
309 through 309.3. Exception: If structure is used strictly for agricultural
use, stalls are installed within the structure, or if the structure
is located on a parcel five (5) acres in size or larger.
|
R309.5. Delete and insert in lieu thereof the following: Fire
sprinklers. Private garages may be protected by fire sprinklers where
the garage wall has been designed based on Table 302.1(2), Footnote
a, and the homeowner has opted to purchase a fire sprinkler system
for their residence, as per Missouri Revised Statutes Section 67.281.
Sprinklers in garages may be connected to an automatic sprinkler system
that complies with Section P2904. Garage sprinklers may be residential
sprinklers or quick-response sprinklers, designed to provide a density
of 0.05 gpm/ft2. Garage doors may not be
considered obstructions with respect to sprinkler placement.
|
R309.6. Insert the following: R309.6. Accessory Structures:
General: This Section shall apply to all pre-manufactured accessory
structures with a minimum area of one hundred twenty (120) square
feet to not exceed three hundred (300) square feet in size. Pre-manufactured
accessory structures, or sheds, are factory-built units comprised
of structural wood wall and floor panels. Due to the combustible nature
of the floor composition, pre-manufactured accessory structures shall
not be used to store hazardous materials, motor vehicles or heavy
machinery.
|
R309.7. Insert the following: R309.7. Pre-Manufactured Accessory
Structures Anchoring System: Accessory structures must be anchored
into the ground to sufficiently withstand a ninety (90) mph wind.
There are three (3) types of acceptable anchoring systems other than
a full foundation with frost-protected footing.
| |
1)
|
Slab. A minimum four (4) inches concrete with four (4) inches
sub grade of suitably compacted materials. One-half (1/2) inch anchor
bolts placed six (6) feet on center with three (3) inches minimum
embedment in concrete.
|
2)
|
Auger Tie Down. Similar to manufactured home tie downs with
a minimum of two percent (2%) side-max spacing ten (10) feet on center.
See manufacturer's details on installation into the ground.
|
3)
|
Piers. Sheds built on four (4) by four (4) skids may be anchored
into a concrete pier system. Piers shall be eight (8) inches by eight
(8) inches by twelve (12) inches deep and shall be spaced a maximum
of eight (8) feet on center. Piers shall be located directly under
the structural floor frame of the shed.
|
Exception: With Planning and Zoning approval, a structure may
be located closer than twelve (12) feet to another structure provided
that the new structure is separated by a one-hour fire partition.
|
R311.2. Delete and insert in lieu thereof the following: Egress
door. Not less than one (1) egress door shall be provided for each
dwelling unit. The egress door shall be side-hinged, and shall provide
a clear width of not less than thirty-six (36) inches where measured
between the face of the door and the stop, with the door open ninety
degrees (90°) (1.57 rad). The clear height of the door opening
shall be not less than eighty (80) inches in height measured from
the top of the threshold to the bottom of the stop. Other doors shall
not be required to comply with these minimum dimensions. Egress doors
shall be readily openable from inside the dwelling without the use
of a key or special knowledge or effort.
|
R311.3. Delete and insert in lieu thereof the following: Floors
and landings at exterior doors. There shall be a landing or floor
at each required egress exterior door. The width of the landing shall
not be less than the door served. The landing shall have a dimension
of not less than thirty-six (36) inches (914 mm) measured in the direction
of travel. The slope at an exterior landing shall not exceed one-fourth
(1/4) unit vertical in twelve (12) units horizontal (two percent (2%)).
| |
Exception: Exterior balconies less than sixty (60) square feet
(5.6 m2) and only accessible from a door
are permitted to have a landing less than thirty-six (36) inches (914
mm) measured in the direction of travel.
|
R311.3.2. Delete and insert in lieu thereof the following: Floor
elevations for other exterior doors. Doors other than the required
egress door shall be provided with landings or floors not more than
seven and three-fourths (7 3/4) inches (196 mm) below the top
of the threshold.
| |
Exception: A top landing is not required where a stairway of
four (4) or fewer risers is located on the exterior side of the door,
provided that door does not swing over the stairway.
|
R311.6.1. Insert the following: R311.6.1. Interior Passage Doors.
The minimum width of an interior passage door shall be two (2) feet
six (6) inches.
| |
Exception:
| |
Bathroom doors may be two (2) feet four (4) inches.
|
R311.7.5.1. Delete and insert in lieu thereof the following:
Risers. Eight (8) inches
|
R311.7.5.2. Delete and insert in lieu thereof the following:
Treads. Nine (9) inches
| ||
Exceptions:
| ||
1.
|
For remodeling projects in existing homes, homes in urban, in-fill
or high-density developments, or historical buildings or dwellings,
riser height of not more than eight and one-fourth (8 1/4) inches
(210 mm) and tread depth of not more than nine (9) inches (229 mm)
will be allowed.
| |
2.
|
For remodeling projects in existing homes, stair tread and riser
will be allowed to mimic previous or existing conditions.
|
R311.7.6. Delete and insert in lieu thereof the following: Landings
for stairways. There shall be a floor or landing at the top and bottom
of each stairway. The width perpendicular to the direction of travel
shall be not less than the width of the flight served. Landings of
shapes other than square or rectangular shall be permitted provided
the depth at the walk line and the total area is not less than that
of a quarter circle with a radius equal to the required landing width.
Where the stairway has a straight run, the depth in the direction
of travel shall not be less than thirty-six (36) inches (914 mm).
| |
Exception: A floor or landing is not required at the top of
an interior or exterior flight of stairs, including stairs in an enclosed
garage, provided that a door does not swing over the stairs.
|
R312.1.1. Delete and insert in lieu thereof the following: Where
required. Guards shall be located along open-sided walking surfaces,
including stairs, ramps and landings that are located more than thirty
(30) inches (762 mm) measured vertically at the edge of the walking
surface to the floor or grade below. Insect screening shall not be
considered as a guard.
|
R312.2. Delete entire section.
|
R313.1. Delete and insert in lieu thereof the following: Townhouse
automatic fire sprinkler systems. An automatic residential fire sprinkler
system shall be installed in townhouses, in accordance with Section 67.281
of the Missouri Revised Statutes.
| |
Exception: An automatic residential fire sprinkler system shall
not be required where additions or alterations are made to existing
townhouses that do not have an automatic residential fire sprinkler
system installed.
|
R313.1.1. Delete and insert in lieu thereof the following: Design
and installation. Automatic residential fire sprinkler systems for
townhouses shall be designed and installed in accordance with Section
P2904 or NFPA 13D.
|
R313.2. Delete and insert in lieu thereof the following: One-
and two-family dwellings automatic fire systems. A builder of a single-family
dwelling or residence or multi-unit dwellings of four (4) or fewer
units shall offer to any purchaser on or before the time of entering
into the purchase contract the option, at the purchaser's cost, to
install or equip fire sprinklers in the dwelling, residence, or unit.
Notwithstanding any other provision of law to the contrary, no purchaser
of such a single-family dwelling, residence, or multi-unit dwelling
shall be denied the right to choose or decline to install a fire sprinkler
system in such dwelling or residence being purchased by any code,
ordinance, rule, regulation, order, or resolution by any County or
other political subdivision. Any County or other political subdivision
shall provide in any such code, ordinance, rule, regulation, order,
or resolution the mandatory option for purchasers to have the right
to choose and the requirement that builders offer to purchasers the
option to purchase fire sprinklers in connection with the purchase
of any single-family dwelling, residence, or multi-unit dwelling of
four (4) or fewer units.
| |
Exception: An automatic residential fire sprinkler system shall
not be required for additions or alterations to existing buildings
that are not already provided with an automatic residential sprinkler
system.
|
R313.2.1. Delete and insert in lieu thereof the following: Design
and installation. Automatic residential fire sprinkler systems shall
be designed and installed in accordance with Section P2904 or NFPA
13D.
|
R314.6. Delete and insert in lieu thereof the following: Power
Source. Smoke alarms shall receive 120V/AC from the building wiring
where such wiring is served from a commercial source and, where primary
power is interrupted, shall receive power from a battery. Wiring shall
be permanent and without a disconnecting switch other than those required
for overcurrent protection.
| ||
Exceptions:
| ||
1.
|
Smoke alarms shall be permitted to be battery operated where
installed in buildings without commercial power.
| |
2.
|
Smoke alarms installed in accordance with Section R314.2.2 shall
be permitted to be battery powered.
|
R315.5. Delete and insert in lieu thereof the following: Power
Source. Carbon monoxide alarms shall receive their power from the
120V/AC and interconnected with smoke alarms with battery backup.
This shall only apply to a new home or where improvements defined
as "substantial improvements" occur.
|
R323.1. Delete and insert in lieu thereof the following: General.
This Section applies to storm shelters where constructed as separate
detached buildings or where constructed as safe rooms within buildings
for the purpose of providing refuge from storms that produce high
winds, such as tornadoes and hurricanes. In addition to other applicable
requirements in this code, storm shelters shall be constructed in
accordance with ICC/NSSA-500, except when located below grade or if
basement walls are fully constructed with concrete.
|
Table R403.1. Delete Table. (see Subsection 403.1.1 amendment)
|
R403.1.1. Delete and insert in lieu thereof the following: Minimum
Size. All concrete footings shall have a minimum of two (2) one-half
(1/2) inch rebar. The minimum size for all footings shall be eight
(8) inches thick by sixteen (16) inches wide. In one- and two-family
dwellings the minimum footing size shall be:
| ||
Slab and crawl space one story
|
8" x 16"
| |
One story
|
8" x 20"
| |
One and one-half story
|
8" x 22"
| |
Two story
|
8" x 24"
| |
********Add two (2) inches to width of footing for ten-inch
walls**********
| ||
Add two (2) inches to the width of the footing when a log home
will be built. In all other buildings, the footing shall be designed
to carry the load applied on it. All footings must have a key-way.
|
R403.1.7. Delete and insert in lieu thereof the following: Footings
on or adjacent to slopes. The placement of buildings and structures
on or adjacent to slopes steeper than one (1) unit vertical in three
(3) units horizontal (33.3-percent slope) shall conform to Sections
R403.1.7.1 through R403.1.7.4 or plans as signed and sealed by a registered
engineer.
|
R403.3. Delete entire section.
|
Table R404.1.2(4). Delete and insert in lieu thereof the following:
|
Table R404.1.2(4)
| ||||
---|---|---|---|---|
Minimum Vertical Reinforcement For 10-Inch Nominal Flat Concrete
Basement Wallsb,c,d,e,f,h,i
| ||||
Minimum Vertical Reinforcement — Bar Size And Spacing
(inches) Soil Classesa and design lateral
soil (psf per foot of depth)
| ||||
GW, GM, GC, SC, ML-CL GP, SW, SM, SM-SC and inorganic SP and
ML-CL
| ||||
Minimum Unsupported Wall Height
(feet)
|
Maximum Unbalanced Backfill Heightg
(feet)
|
30
|
45
|
60
|
8
|
4
|
NR
|
NR
|
NR
|
5
|
NR
|
NR
|
NR
| |
6
|
NR
|
NR
|
NR
| |
7
|
NR
|
NR
|
NR
| |
8
|
6@48
|
6@35
|
6@28
| |
9
|
4
|
NR
|
NR
|
NR
|
5
|
NR
|
NR
|
NR
| |
6
|
NR
|
NR
|
NR
| |
7
|
NR
|
NR
|
NR
| |
8
|
NR
|
NR
|
6@28
| |
9
|
6@37
|
6@28
|
6@24
| |
10
|
4
|
NR
|
NR
|
NR
|
5
|
NR
|
NR
|
NR
| |
6
|
NR
|
NR
|
NR
| |
7
|
NR
|
NR
|
6@28
| |
8
|
NR
|
6@28
|
6@28
| |
9
|
6@33
|
6@28
|
6@21
| |
10
|
6@28
|
6@23
|
6@17
| |
For SI: 1 foot = 304.8 mm; 1 inch = 25.4 mm; 1 pound per square
foot per foot = 0.1571 kPa2/m; 1 pound
per square inch = 6.895kPa
| ||||
a.
|
Soil classes are in accordance with the Unified Soil Classification
System. Refer to Table R405.1.
| |||
b.
|
Table values are based on reinforcing bars with a minimum yield
strength of sixty thousand (60,000) psi concrete with a minimum specified
compressive strength of two thousand five hundred (2,500) psi and
vertical reinforcement being located at the centerline of the wall.
See Section R404.1.2.3.7.2.
| |||
c.
|
Vertical reinforcement with a yield strength of less than sixty
thousand (60,000) psi and/or bars of a different size than specified
in the table are permitted in accordance with Section R404.1.2.3.7.6
and Table R404.1.2(9).
| |||
d.
|
NR indicates no vertical reinforcement is required.
| |||
e.
|
Deflection criterion is L/240 where L is the height of the basement
wall in inches.
| |||
f.
|
Interpolation is not permitted.
| |||
g.
|
Where walls will retain four (4) feet or more of unbalanced
backfill, they shall be laterally supported at the top and bottom
before backfilling.
| |||
h.
|
See Section R404.1.2.2 for minimum reinforcement required for
basement walls supporting above grade concrete walls.
| |||
i.
|
See Table R611.3 for tolerance from nominal thickness permitted
for flat walls. Table 404.1.2.(8) Delete Table and insert the following.
See Table 404.1.2(8) at the end of this Chapter.[2]
|
R404.1.3.2. Delete and insert in lieu thereof the following:
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(1). Vertical reinforcement
shall 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 four (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.
| |
Exception: Where unstable soil or ground water conditions do
not exist, concrete foundation walls may be constructed in accordance
with Table R404.1.2(10).
|
TABLE R404.1.2(10). Insert the following:
| ||
---|---|---|
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)
|
Note a:
|
Concrete foundation walls may be constructed a minimum of nominal
eight (8) inches thick where the wall height from the top of the footing
to the top of the wall does not exceed eight (8) feet. A minimum of
two #4 reinforcing bars shall be placed horizontally in the top and
bottom of the foundation wall. A minimum of two #5 reinforcing bars
shall be provided around all window and door openings in concrete
foundation and basement walls; bars shall extend a minimum of twenty-four
(24) inches beyond the corners of the openings.
|
Note b:
|
Concrete foundation walls may be constructed a minimum of nominal
ten (10) inches thick. A minimum of two #5 reinforcing bars shall
be placed horizontally in the top, middle, and bottom of the foundation
wall. A minimum of two #5 reinforcing bars shall be provided around
all window and door openings in concrete foundation and basement walls;
bars shall extend a minimum of twenty-four (24) inches beyond the
corners of the openings.
|
The concrete minimum nominal wall thickness shall be eight (8)
inches for foundation walls in soil classes SC, MH, ML-CL and inorganic
CL when the maximum wall height is eight (8) feet.
| |
The concrete minimum wall thickness shall be ten (10) inches
for foundation walls in soil classes SC, MH, ML-CL and inorganic CL
when the maximum wall height is nine (9) feet.
| |
The concrete minimum wall thickness shall be twelve (12) inches
for foundation walls in soil classes SC, MH, ML-CL and inorganic CL
when the maximum wall height is ten (10) feet.
|
R405. Delete entire section and insert in lieu thereof the following:
R405 Foundation Drainage. An evaluation of the soil for the presence
or absence of ground water 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. No ground water present. Provide drain tile, perforated
pipe, or other approved foundation drainage systems (such as water
channel system) around perimeter of the outside of the foundation
or inside the foundation. Drain discharge shall be by gravity to daylight
or be connected to a basement floor sump.
|
R405.1.2. 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 gravel or crushed stone
and have six (6) inches minimum cover.
|
R405.1.3. Drainage system. The drainage system shall discharge
by gravity to daylight or be connected to an approved sump (fifteen
(15) inches in diameter x eighteen (18) inches deep with fitted cover).
A sump pump shall be provided if basement is finished or partially
finished with pump discharge by an approved method.
|
R405.1.4. Damp Proofing. Provide damp proofing of floor slab
with a six (6) mil polyethylene film below slab, with joints in membrane
lapped a minimum of six (6) inches and sealed.
|
R405.2. Ground water present. Provide drain tile, perforated
pipe, or other approved foundation drainage systems (such as water
channel system) around perimeter of the outside of the foundation
or inside the foundation.
|
R405.2.1. Drainage System. Drainage system shall discharge by
gravity to daylight or be connected to an approved sump (fifteen (15)
inches in diameter x eighteen (18) inches deep with fitted cover)
having a sump pump that discharges into an approved disposal system
or to daylight.
|
R507.2.4. Delete entire section.
|
R602.7.5. Delete entire section.
|
R602.3. Insert the following: Exception #2 Headers can be on
top of an opening in a wall.
|
R602.3.1. Delete the first sentence and insert in lieu thereof:
The size, height and spacing of studs shall be spaced no more than
sixteen (16) inches on center.
|
Table 602.3.(1). Insert in #35 Number and Type of Fastener the
following: or 1 1/8" screws, pan head or button head. Insert
in #36 Number and Type of Fastener the following: or 1 1/4" screws,
pan head or button head.
|
Table R602.3(3). Delete the number 24 from Maximum Wall Stud
Spacing and insert in lieu thereof the following: 16.
|
FIGURE R602.10.10.3
| |
---|---|
SIMPLIFIED PORTAL WALL
| |
a.
|
CRIPPLE WALL FRAMING CONSISTING OF STUD FRAMING, SINGLE BOTTOM
PLATE, AND DOUBLE TOP PLATE MAY BE ADDED TO THE TOP OF THE NARROW
PORTAL WALL AS LONG AS THE COMBINED HEIGHT OF THE TWO (2) WALLS IS
LESS THAN OR EQUAL TO TWELVE (12) FEET AND THE TWO (2) WALLS ARE STRAPPED
TOGETHER ON THE INTERIOR SIDE WITH A 16 GUAGE METAL ONE AND ONE-HALF
(1 1/2) INCH WIDE BY TWENTY-ONE (21) INCH LONG STRAP. A MINIMUM
TEN (10) INCHES OF THE STRAP SHALL BE CONNECTED TO EACH WALL OR GABLE
TRUSS WITH 9 - 16D NAILS FOR A TOTAL OF 18 - 16D NAILS IN THE ENTIRE
STRAP. STRAPS SHALL BE LOCATED AT EACH END OF THE CONNECTED WALLS
OR WALL AND GABLE TRUSS WHERE SPACE ALLOWS FOR THE TEN (10) INCH LENGTH
OF STRAP. THE SPACING BETWEEN THE STRAPS MAY NOT EXCEED FOUR (4) FEET
ON CENTER. THE STRAPS SHALL NOT BE BENT HORIZONTALLY TO ACCOMMODATE
WOOD FRAMING. IF APPLICABLE, NAILERS SHALL BE ADDED TO ONE (1) OF
THE WALLS OR GABLE END USING A MINIMUM OF 9 - 16D NAILS TO CREATE
THE VERTICAL PLANE NEEDED TO MOUNT THE STRAP.
|
FIGURE R602.10.10.4. Insert the following:
|
FIGURE R602.10.10.4
| |
SIMPLIFIED BRACING EXTERIOR CORNER FRAMING
| |
a.
|
END STUD INDICATED ON THE ABOVE DETAILS MAY BE SHIFTED 7/16"
TO ALLOW STUD FACE TO BE ALIGNED WITH SHEATHING, OR AN OPTIONAL NON-STRUCTURAL
FILLER PANEL MAY BE USED.
|
R602.12. Delete and insert in lieu thereof the following: 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 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.
| |
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 twelve (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 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 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. Delete and insert in lieu thereof the following: 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 sixty (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. Delete and insert in lieu thereof the following:
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 seven-sixteenth
(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).
|
R602.12.3. Delete and insert in lieu thereof the following:
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 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).
|
R602.13. Insert the following: Alternate simplified bracing
method for one- and two-family dwellings when the entire structure
is sheathed with wood structural panels and located in wind exposure
A or B. The construction documents shall detail the locations and
widths of all braced wall panels in accordance with this Section.
|
R602.13.1. Insert the following: Wood structural sheathing.
The building exterior walls shall be sheathed with seven-sixteenth
(7/16) inch (11.1 mm) or thicker plywood or OSB wood structural panels.
The wood structural panels shall be applied to all exterior walls,
gable ends and band boards. All vertical joints between panels shall
be blocked. Horizontal joints in braced wall panels shall be blocked.
|
R602.13.2. Insert the following: Braced wall panel locations.
Braced wall panels shall be located in every exterior braced wall
line in accordance with the following criteria:
| ||
1.
|
The outside edge of the first braced wall panel meeting the
width established in Table R602.13.3 shall be a maximum of twelve
and five tenths (12.5) feet (3,810 mm) or less from each end of the
braced wall line. The outside stud of the first braced wall panels
closest to the end of the braced wall line shall be secured with a
hold-down device securing the end stud to the foundation with a minimum
uplift design value of eight hundred (800) pounds.
| |
Exception: The eight hundred (800) pound hold-down device is
not required when the braced wall panel is placed at the end of the
braced wall line and there is a twenty-four (24) inch (610 mm) wide
full height sheathed wall placed ninety degrees (90°) to the end
of the braced wall line and panel.
| ||
2.
|
The centerline spacing of braced wall panels in a braced wall
line may not exceed twenty-five (25) feet (7,620 mm).
|
R602.13.3. Insert the following: Braced wall panel widths. Braced
wall panel locations shall be shown on the floor plans or elevation
views and meet the widths established in Table R602.13.3.
|
TABLE R602.13.3. Insert the following:
|
Table 602.13.3
| ||||||
---|---|---|---|---|---|---|
Simplified Bracing Panel Widths
| ||||||
Width of Solid Panela, b
| ||||||
8' wall height
|
9' wall height
|
10' wall height
|
12' wall height
| |||
Plywood/OSB Panel
|
3:1
|
32"
|
36"
|
40"
|
48"
| |
Simplified Portal Wallc
|
6:1
|
16"d
|
18"d
|
20"d
|
24"d
| |
a.
|
Linear interpolation is permitted.
| |||||
b.
|
Wall height is the vertical distance from the bottom of the
sole/sill plate to the top of the double top plate. An additional
two (2) inch (50.8 mm) variation in height is allowed for pre-cut
stud framing.
| |||||
c.
|
The Simplified Portal Wall, if applicable, shall be constructed
in accordance with the applicable detail in Figure R602.13.3. The
designer shall provide this detail on the construction documents.
| |||||
d.
|
The Simplified Portal Wall width assumes the beam is placed
under the top plate of the wall. A smaller width may be calculated
for a lower top of beam height using the 6:1 height to width ratio.
|
R602.13.4. Insert the following: Corner framing. The exterior
wall corners shall be constructed in accordance with the applicable
detail in Figure R602.10.10.4.
| |
Exception: Braced wall panels located in accordance with Section
R602.13.2.
|
R602.13.5. Insert the following: Braced wall line spacing. When
the perpendicular distance between the exterior braced wall lines
exceeds fifty (50) feet (15,240 mm), the registered design professional
shall include the following certification on the drawings: The interior
and exterior wall configuration braces for the structure in accordance
with or equivalent to the lateral bracing provisions of Section R602.10
of the International Residential Code, 2009 Edition or Section 2305
of the International Building Code, 2009 Edition.
|
R602.13.6. Insert the following: Maximum wall height. Walls
greater than twelve (12) feet (3,658 mm) (twelve (12) feet two (2)
inches (3,708 mm) actual) in height and twelve (12) feet (3,658 mm)
in width shall be designed and detailed by the registered design professional
to resist wind loads in both the longitudinal and transverse directions.
|
R905.2.8.2. Delete and insert in lieu thereof the following:
Valleys. Valley linings shall be installed in accordance with the
manufacturer's instructions before applying shingles. Valley linings
of the following types shall be permitted:
| ||
1.
|
For open valleys (valley lining exposed) lined with metal, the
valley lining shall be not less than twenty-four (24) inches (610
mm) wide and of any of the corrosion-resistant metals in Table R905.2.8.2.
| |
2.
|
For open valleys, valley lining of two plies of mineral-surfaced
roll roofing, complying with ASTM D 3909 or ASTM D 6380 Class M, shall
be permitted. The bottom layer shall be eighteen (18) inches (457
mm) and the top layer not less than thirty-six (36) inches (914 mm)
wide.
| |
3.
|
For closed valleys (valley covered with shingles), valley lining
of two 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.
|
R905.2.8.5. Delete entire section.
|
R1005.7. Delete and insert in lieu thereof the following: Factory-built
chimney offsets. Where a factory-built chimney assembly incorporates
offsets, no part of the chimney shall be at an angle of more than
thirty degrees (30°) (0.52 rad) from vertical at any point in
the assembly and the chimney assembly shall not include more than
four (4) elbows.
| |
Exception: When chimneys are installed per manufacturer's installation
instructions.
|
R1006.1.1. Delete and insert in lieu thereof the following:
Factory-built fireplaces. Exterior combustion air ducts for factory-built
fireplaces shall be a listed component of the fireplace or equivalent
and shall be installed according to the fireplace manufacturer's instructions.
|
R1006.2. Delete and insert in lieu thereof the following: Exterior
air intake. The exterior air intake on masonry fireplaces shall be
capable of supplying combustion air from the exterior of the dwelling
or from spaces within the dwelling ventilated with outdoor air such
as non-mechanically ventilated crawl or attic spaces. The exterior
air intake shall not be located within the garage or basement of the
dwelling. The exterior air intake, for other than listed factory-built
fireplaces, shall not be located at an elevation higher than the firebox.
The exterior air intake shall be covered with a corrosion-resistant
screen of one-fourth (1/4) inch (6.4 mm) mesh.
|
N1101.4 (R102.1.1). Delete and insert in lieu thereof the following:
Above code programs. The building official or other authority having
jurisdiction shall be permitted to deem a national, state or local
energy-efficiency program to exceed the energy efficiency required
by this code. Buildings approved in writing by such an energy-efficiency
program shall be considered in compliance with this code.
|
N1101.5 (R103.2). Delete entire section.
|
N1101.5.1 (R103.2.1). Delete entire section.
|
N1101.6 (R202). Defined terms. PROJECTION FACTOR. Delete and
insert in lieu thereof the following: 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). Delete and insert in lieu thereof the following:
Compliance. Projects shall comply with one (1) 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). Delete entire section.
|
TABLE N1102.1.2 (R402.1.2). Delete and insert in lieu thereof
the following:
|
Table N1102.1.2 (R402.1.2)
| ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Climate Zone
|
Fenestra-tion U-Factorb
|
Skylight b U-Factor
|
Glazed Fenestra-tion SHGCb,c
|
Ceiling R-Value
|
Wood Frame Wall R-Value
|
Mass Wall R-Valuei
|
Floor R-Value
|
Base-ment c Wall R-Value
|
Slabd R-Value & 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
|
49
|
20 + 5 or 13 + 10h
|
19/21
|
38g
|
15/19
|
10, 4 ft
|
15/19
|
For SI: 1 foot = 304.8mm.
| ||
a.
|
R-values are minimums. U-factors and SHGC are maximums.
When insulation is installed in a cavity which is less than the label
or design thickness of the insulation, the installed R-value of the
insulation shall not be less than the R-value specified in the table.
| |
b.
|
The fenestration U-factor column excludes skylights.
The SHGC column applies to all glazed fenestration. Exception: Skylights
may be excluded from glazed fenestration SHGC requirements in Climate
Zones 1 through 3 where the SHGC for such skylights does not exceed
0.30.
| |
c.
|
"15/19" means R-15 continuous insulation on the interior
or exterior of the home or R-19 cavity insulation at the interior
of the basement wall. "15/19" shall be permitted to be met with R-13
cavity insulation on the interior of the basement wall plus R-5 continuous
insulation on the interior or exterior of the home. "10/13" means
R-10 continuous insulation on the interior or exterior of the home
or R-13 cavity insulation at the interior of the basement wall.
| |
d.
|
R-5 shall be added to the required slab edge R-values
for heated slabs. Insulation depth shall be the depth of the footing
or two (2) feet, whichever is less in Zones 1 through 3 for heated
slabs.
| |
e.
|
There are no SHGC requirements in the Marine Zone.
| |
f.
|
Basement wall insulation is not required in warm-humid
locations as defined by Figure N1101.10 or Table N1101.10.
| |
g.
|
Or insulation sufficient to fill the framing cavity,
R-19 minimum.
| |
h.
|
The first value is cavity insulation, the second value
is continuous insulation, so "13+5" means R-13 cavity insulation plus
R-5 continuous insulation.
| |
i.
|
The second R-value applies when more than half of the
insulation is on the interior of the mass wall.
| |
j.
|
Exception: Unfinished concrete basement walls do not
require insulation.
|
N1102.1.3. (R402.1.3). Delete and insert in lieu thereof the
following: R-value computation. Insulation material used in layers,
such as framing cavity insulation, or continuous insulation shall
be summed to compute the corresponding component R-value. The manufacturer's
settled R-value shall be used for blown insulation. Computed R-values
may include an R-value for other building materials or air films.
Where insulated siding is used for the purpose of complying with the
continuous insulation requirements of Table N1102.1.2, the manufacturer's
labeled R-Value for insulated siding shall be reduced by R-0.6.
|
N1102.1.5 (R402.1.5). Delete and insert in lieu thereof the
following: Total UA alternative. If the total building envelope UA
(sum of U-factor times assembly area) is less than or equal to the
total UA resulting from using the U-factors in Table N1102.1.4 (multiplied
by the same assembly rea as in the proposed building), the building
shall be considered in compliance with Table N1102.1.2. The UA calculation
shall be done using a method consistent with the ASHRAE Handbook of
Fundamentals and shall include the thermal bridging effects of framing
materials. The SHGC requirements shall be met in addition to UA compliance.
| |
Exception:
| |
Glazed fenestration SHGC. In Climate Zone 4, permanently shaded
vertical fenestration shall be permitted to satisfy SHGC requirements.
The projection factor of an overhang, eave, or permanently attached
shading device shall be greater than or equal to the value listed
in Table N1102.1.5 for the appropriate orientation. The minimum projection
shall extend beyond each side of the glazing a minimum of twelve (12)
inches. Each orientation shall be rounded to the nearest cardinal
orientation (+/- 45 degrees or 0.79 rad) for purposes of calculations
and demonstrating compliance.
|
TABLE N1102.1.5. Insert the following:
|
Table N1102.1.5
| ||
---|---|---|
Minimum Projection Factor Required by Orientation for SHGC Exception
| ||
Orientation
|
Projection Factor
| |
North
|
>=0.40a
| |
South
|
>=0.20
| |
East
|
>=0.50
| |
West
|
>=0.50
| |
a.
|
For the north orientation, a vertical projection located on
the west-edge of the fenestration with the equivalent of PF>=0.15
shall also satisfy the minimum projection factor requirement.
|
N1102.2.4 (R402.2.4). Delete and insert in lieu thereof the
following: Access hatches and doors. Access doors from conditioned
spaces to unconditioned spaces such as attics and crawl spaces shall
be insulated to a level equivalent to the insulation on the surrounding
surfaces. Access shall be provided to all equipment that prevents
damaging or compressing the insulation. A wood-framed or equivalent
baffle or retainer is required to be provided when loose-fill insulation
is installed, the purpose of which is to prevent the loose-fill insulation
from spilling into the living space when the attic access is opened,
and to provide the permanent means of maintaining the installed R-value
of the loose-fill insulation.
| |
Exception: Vertical doors that provide access from the conditioned
to unconditioned spaces shall be permitted to meet the fenestration
requirements of Table R1102.1.2 based on the applicable climate zone
specified in Chapter 3.
|
N1102.4 (R402.4). Delete and insert in lieu thereof the following:
Air leakage. The building thermal envelope may be designed and constructed
to limit air leakage in accordance with the requirements of Sections
R1102.4.1 through R1102.4.4.
|
N1102.4.1 (R402.4.1). Delete and insert in lieu thereof the
following: Building thermal envelope. The building thermal envelope
shall comply with Sections N1102.4.1.1 and N1102.4.1.2. The sealing
methods between dissimilar materials shall allow for differential
expansion and contraction.
|
N1102.4.1.1 (R402.4.1.1). Delete and insert in lieu thereof
the following: Installation. The components of the building thermal
envelope as listed in Table N1102.4.1.1 shall be installed in accordance
with the manufacturer's instructions and the criteria listed in Table
N1102.4.1.1, as applicable to the method of construction. Where required
by the building official, an approved third party shall inspect all
components and verify compliance.
|
N1102.4.1.2 (R402.4.1.2). Delete and insert in lieu thereof
the following: Testing. Any building or dwelling unit may be tested
and verified as having an air leakage rate of not exceeding five (5)
air changes per hour in Climate Zone 4. Testing shall be conducted
in accordance with ASTM E 779 or ASTM E 1827 and reported at a pressure
of two tenths (0.2) inches w.g. (50 Pascals'). Where required by the
code official, testing shall be conducted by an approved third party.
A written report of the results of the test shall be signed by the
party conducting the test and provided to the code official. Testing
shall be performed at any time after creation of all penetrations
of the building thermal envelope. During testing:
| ||
1.
|
Exterior windows and doors, fireplace and stove doors shall
be closed, but not sealed, beyond the intended 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.
|
TABLE N1102.4.1.1 (402.4.1.1). Delete entire table.
|
N1102.4.2 (R402.4.2). Delete entire section.
|
N1102.4.4 (R402.4.4). Delete and insert in lieu thereof the
following: Rooms containing fuel-burning appliances. In Climate Zones
3 through 8, where open combustion air ducts provide combustion air
to open combustion fuel-burning appliances, the appliances and combustion
air opening shall be located outside the building thermal envelope
or enclosed in a room, isolated from inside the thermal envelope.
Such rooms shall be sealed and insulated in accordance with the envelope
requirements of Table N1102.1.2, where the walls, floors and ceilings
shall meet a minimum of the basement wall R-value requirement. The
door into the room shall be fully gasketed and any water lines and
ducts in the room insulated in accordance with Section N1103. The
combustion air duct shall be insulated where it passes through conditioned
space to a minimum of R-8.
| ||
Exceptions:
| ||
1.
|
Direct vent appliances with both intake and exhaust pipes installed
continuous to the outside.
| |
2.
|
Fireplaces and stoves complying with Sections N1102.4.2 and
R1006.
| |
3.
|
Mechanical equipment in an unfinished space.
|
N1102.4.5 (R402.4.5). Delete and insert in lieu thereof the
following: Recessed lighting. Recessed luminaires installed in the
building thermal envelope may be sealed to limit air leakage between
conditioned and unconditioned spaces. All recessed luminaires may
be IC-rated and labeled as having an air leakage rate not more than
2.0 cfm (0.944 L/s) when tested in accordance with ASTM E 283 at a
1.57 psf (75 Pa) pressure differential. All recessed luminaires may
be sealed with a gasket or caulk between the housing and interior
wall or ceiling covering.
|
N1103.1.1 (R403.1.1). Delete entire section.
|
N1103.2 (R403.2). Delete entire section.
|
N1103.3.1. (R403.3.1). Delete and insert in lieu thereof the
following: Insulation. Supply and return ducts in unconditioned spaces
shall be insulated to a minimum of R-4.
|
N1103.3.2 (R403.3.2). Delete and insert in lieu thereof the
following: Sealing. Ducts, air handlers and filter boxes shall be
sealed. Joints and seams shall comply with either the International
Mechanical Code or Section M1601.4.1 of this code, as applicable.
| ||
Exceptions:
| ||
1.
|
Air-impermeable spray foam products shall be permitted to be
applied without additional joint seals.
| |
2.
|
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.
|
N1103.3.3 (R403.3.3). Delete entire section.
|
N1103.3.4. (R403.3.4). Delete entire section.
|
N1103.3.5 (R403.3.5). Delete entire section.
|
N1103.4.1 (R403.4.1). Delete entire section.
|
N1103.5.3 (R405.5.3). Delete and insert in lieu thereof the
following: 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 three fourths (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). Delete and insert in lieu thereof the following:
Mechanical ventilation. The building may 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 may have automatic or gravity dampers
that close when the ventilation system is not operating.
| |
Exception: Existing mechanical systems being replaced do not
require mechanical ventilation.
|
N1103.6.1 (R403.6.1). Delete entire section.
|
TABLE N1103.6.1 (R403.6.1). Delete entire table.
|
N1103.7 (R403.7). Delete and insert in lieu thereof the following:
Equipment sizing and efficiency rating (Mandatory). Heating and cooling
equipment shall be sized in accordance with ACCA Manual J or other
approved heating and cooling calculation methodologies. New or replacement
heating and cooling equipment shall have an efficiency rating equal
to or greater than the minimum required by Federal law for the geographic
location where the equipment is installed.
|
N1104 (R404). Delete entire section.
|
N1104.1 (R404.1). Delete entire section.
|
N1104.1.1 (R404.1.1). Delete entire section.
|
Table N1105.5.2(1) [R405.5.2(1)]. Delete and insert in lieu
thereof the following:
|
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 walls 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 absorption = 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 = a) fifteen percent
(15%) of the conditioned floor area.
|
As proposed
|
Orientation: equally distributed to four cardinal compass
|
As proposed orientations (N, E, S & W)
| |
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 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 = 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
|
1 Gain = 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
Nonelectric Furnaces: natural gas furnace with prevailing Federal
minimum standards
Nonelectric 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
| |
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 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 set point = 75° F.; Heating
temperature set point = 72° F.
|
Same as standard reference
|
For SI:1 square foot = 0.93 m2, 1
British thermal unit = 1055 J, 1 pound per square foot = 4.88 kg/m2, 1 gallon (US) = 3.785 L, ° C. = (° F.-32)/1.8,
1 degree = 0.79 rad
| ||
a.
|
Where required by the code official, testing shall be conducted
by an approved party. Hourly calculations as specified in the ASHRAE
Handbook of Fundamentals, or the equivalent shall be used to determine
the energy loads resulting from infiltration.
| |
b.
|
The combined air exchange rate for infiltration and mechanical
ventilation shall be determined in accordance with Equation 43 of
2001 ASHRAE Handbook of Fundamentals, page 26.24 and the "Whole-House
Ventilation" provisions of 2001 ASHRAE Handbook of Fundamentals, page
26.19 for intermittent mechanical ventilation.
| |
c.
|
Thermal storage element shall mean a component not part of the
floors, walls or ceilings that is part of a passive solar system,
and that provides thermal storage such as enclosed water columns,
rock beds, or phase-change containers. A thermal storage element must
be in the same room as fenestration that faces within fifteen degrees
(15°) (0.26 rad) of true south, or must be connected to such a
room with pipes or ducts that allow the element to be actively charged.
| |
d.
|
For a proposed design with multiple heating, cooling or water
heating systems using different fuel types, the applicable standard
reference design system capacities and fuel types shall be weighted
in accordance with their respective loads as calculated by accepted
engineering practice for each equipment and fuel type present.
| |
e.
|
For a proposed design without a proposed heating system, a heating
system with the prevailing Federal minimum efficiency shall be assumed
for both the standard reference design and proposed design.
| |
f.
|
For a proposed design home without a proposed cooling system,
an electric air conditioner with the prevailing Federal minimum efficiency
shall be assumed for both the standard reference design and the proposed
design.
| |
g.
|
For a proposed design with a non-storage-type water heater,
a 40-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 40-gallon storage-type water heater with
the prevailing Federal minimum efficiency for the same fuel as the
predominant heating fuel type shall be assumed for both the proposed
design and standard reference design.
|
M1301.2. Delete entire section.
|
M1301.3. Delete entire section.
|
M1301.4. Delete entire section.
|
M1301.5. Delete entire section.
|
M1305.1.4.1. Delete and insert in lieu thereof the following:
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 (50.8 mm) above the
adjoining ground. Such support shall be in accordance with the manufacturer's
installation instructions. Appliances suspended from the floor shall
have a clearance of not less than six (6) inches (152 mm) from the
ground.
|
M1305.1.4.3. Delete and insert in lieu thereof the following:
Electrical requirements. A luminaire controlled by a switch located
at the required passageway opening and a receptacle outlet shall be
installed at or near the appliance location in accordance with Chapter
39. Exposed lamps shall be protected from damage by location or lamp
guards.
| |
Exception: Basements
|
M1307.2. Delete and insert in lieu thereof the following: Anchorage
of appliances. Appliances designed to be fixed in position shall be
fastened or anchored in an approved manner. In Seismic Design Categories
D0, D1 and D2, water heaters and thermal storage units shall be anchored
or strapped to resist horizontal displacement caused by earthquake
motion in accordance with one (1) of the following:
| ||
1.
|
Anchorage and strapping shall be designed to resist a horizontal
force equal to one-third (1/3) of the operating weight of the water
heater storage tank, acting in any horizontal direction. Strapping
shall be at points within the upper one-third (1/3) and lower one-third
(1/3) of the appliance's vertical dimensions. At the lower point,
the strapping shall maintain a minimum distance of four (4) inches
(102 mm) above the controls.
| |
2.
|
The anchorage strapping shall be in accordance with the appliance
manufacturer's recommendations.
| |
Exception: Furnaces and air conditioners replaced in existing
structures that were not built to seismic codes are not required to
be seismically anchored.
|
M1401.3. Delete and insert in lieu thereof the following: Equipment
and appliance sizing. Heating and cooling equipment and appliances
shall be sized in accordance with ACCA Manual J or other approved
heating and cooling calculation methodologies.
| ||
Exception: Heating and cooling equipment and appliance sizing
shall not be limited to the capacities determined in accordance with
Manual S where either of the following conditions applies:
| ||
1.
|
The specified equipment or appliance utilizes multistage technology
or variable refrigerant flow technology and the loads calculated in
accordance with the approved heating and cooling calculation methodology
is within the range of the manufacturer's published capacities for
that equipment or appliance.
| |
2.
|
The specified equipment or appliance manufacturer's published
capacities cannot satisfy both the total and sensible heat gains calculated
in accordance with the approved heating and cooling calculation methodology
and the next larger standard size unit is specified.
|
M1411.3.1. Delete and insert in lieu thereof the following:
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 twelve (12) units' horizontal
(one-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 one and five tenths (1.5) inches (38
mm), shall be not less than three (3) inches (76 mm) larger than the
unit or the coil dimensions in width and length and shall be constructed
of corrosion-resistant material. Galvanized sheet steel pans shall
have a minimum thickness of not less than (No. 26 Gage). Non-metallic
pans shall have a minimum thickness of not less than 0.0625 inch (1.6
mm).
|
M1501.1. Delete and insert in lieu thereof the following: Outdoor
discharge. The air removed by every mechanical exhaust system shall
be discharged to the outdoors in accordance with Section M1506.2.
Air shall not be exhausted into an attic, soffit, ridge vent or crawl
space.
| ||
Exceptions:
| ||
1.
|
Whole-house ventilation-type attic fans that discharge into
the attic space of dwelling units having private attics shall be permitted.
| |
2.
|
Bathroom exhaust may discharge to an attic gable vent or ventilated
soffit.
|
M1502.4.1. Delete and insert in lieu thereof the following:
Material and size. Exhaust ducts be constructed of metal having a
minimum thickness of 0.0157 inch (0.3950 mm) (No. 30 gage). The duct
shall be four (4) inches (102 mm) nominal in diameter.
|
M1502.4.2. Delete and insert in lieu thereof the following:
Duct installation. Exhaust ducts shall be supported at intervals not
to exceed twelve (12) feet (3,658 mm) and shall be secured in place.
The insert end of the duct shall extend into the adjoining duct or
fitting in the direction of airflow. Exhaust duct joints shall be
sealed in accordance with Section M1601.4.1.
|
M1502.4.5.1. Delete and insert in lieu thereof the following:
Specified length. The maximum length of the exhaust duct shall be
thirty five (35) feet (10,688 mm) from the connection to the transition
duct from the dryer to the outlet terminal. Where fittings are used,
the maximum length of the exhaust duct shall be reduced in accordance
with Table M1502.4.5.1. The maximum length of the exhaust duct does
not include the transition duct.
| |
Exception: The maximum developed length may be extended to fifty-five
(55) feet if clearly labeled cleanouts are provided within twelve
(12) inches of the second elbow, at every elbow thereafter, and at
least every fifteen (15) feet of developed length thereafter.
|
M1503.4. Delete and insert in lieu thereof the following: Makeup
air required. Exhaust hood systems capable of exhausting in excess
of six hundred (600) cubic feet per minute shall be mechanically or
naturally provided with makeup air at a rate approximately equal to
the exhaust air rate. Such makeup air systems shall be equipped with
a means of closure and shall be automatically controlled to start
and operate simultaneously with the exhaust system.
|
M1506.3. Delete entire section.
|
M1507.2. Delete and insert in lieu thereof the following: Recirculation
of air. Exhaust air from bathrooms and toilet rooms shall not be recirculated
within a residence or to another dwelling unit and shall be exhausted
in accordance with Section M1501.1.
|
M1601.1.1. Delete and insert in lieu thereof the following:
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.
|
Fibrous glass duct construction shall conform to the SMACNA
Fibrous Glass Duct Construction Standards or NAIMA Fibrous Glass Duct
Construction Standards.
| |
3.
|
Field-fabricated and shop-fabricated metal and flexible duct
constructions shall conform to the SMACNA HVAC Duct Construction Standards
- Metal and Flexible except as allowed by Table M1601.1.1. Galvanized
steel shall conform to ASTM A 653.
| |
4.
|
The use of gypsum products to construct return air ducts or
plenums is permitted, provided that the air temperature does not exceed
125° F. (52° C.) and exposed surfaces are not subject to condensation.
| |
5.
|
Duct systems shall be constructed of materials having a flame
spread index of not greater than two hundred (200).
| |
6.
|
Stud wall cavities and the spaces between solid floor joists
to be used as non-ducted air plenums shall comply with the following
conditions:
| |
6.1.
|
These cavities or spaces shall not be used as a plenum for air
supply.
| |
6.2.
|
These cavities or spaces shall not be a part of required fire-resistance-rated
assembly.
| |
6.3.
|
Stud wall cavities and joist-space plenums shall be isolated
from adjacent concealed spaces by tight-fitting fire blocking in accordance
with Section R602.8.
| |
6.4.
|
Stud wall cavities in the outside walls of building envelope
assemblies shall not be utilized as air plenums.
|
TABLE M1601.1.1. Delete and insert in lieu thereof the following:
|
Duct Construction Association Of St Louis & Eastern Missouri
| |||||
---|---|---|---|---|---|
Table M1601.1.1
| |||||
Duct Construction Minimum Sheet Metal Thickness for Single Dwelling
Unitsa
| |||||
Static Pressure
| |||||
Thickness
(inches)
|
Thickness
(inches)
| ||||
Galvanized
|
Aluminum
|
Galvanized
|
Aluminum
| ||
Round Duct Diameter
(inches)
|
1/2 inch water gage
|
1-inch water gage
| |||
<12
|
0.013
|
0.018
|
0.013
|
0.018
| |
12 to 14
|
0.013
|
0.018
|
0.016
|
0.023
| |
15 to 17
|
0.016
|
0.023
|
0.019
|
0.027
| |
18
|
0.016
|
0.023
|
0.024
|
0.034
| |
19 to 20
|
0.019
|
0.027
|
0.024
|
0.034
| |
Static Pressure
| |||||
Rectangular Duct Dimension
(largest dimension)
|
1/2 inch water gage
|
1-inch water gage
| |||
Thickness
(inches)
|
Thickness
(inches)
| ||||
Galvanized
|
Aluminum
|
Galvanized
|
Aluminum
| ||
<8
|
0.013
|
0.018
|
0.013
|
0.018
| |
9 to 10
|
0.013
|
0.018
|
0.016
|
0.023
| |
11 to 12
|
0.016
|
0.023
|
0.019
|
0.027
| |
13 to 16
|
0.016
|
0.027
|
0.019
|
0.027
| |
17 to 18
|
0.019
|
0.027
|
0.024
|
0.034
| |
19 to 20
|
0.019
|
0.034
|
0.024
|
0.034
| |
For SI: 1 inch = 25.4 mm, 1-inch water gage = 249 Pa.
| |||||
a.
|
Ductwork that exceeds twenty (20) inches by dimension or exceeds
a pressure of 1-inch water gage (250 Pa) shall be constructed in accordance
with SMACNA HVAC Duct Construction Standards Metal and Flexible.
|
M1601.4.1. Delete and insert in lieu thereof the following:
Joints, seams and connections. Joints of duct systems shall be made
substantially airtight in an unconditioned area by means of tapes,
mastics, liquid sealants, gasketing or other approved closure systems.
Closure systems used with rigid fibrous glass ducts shall comply with
UL181A 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. Delete and insert in lieu thereof the following: Return
air openings. Return air openings for heating, ventilation and air
conditioning systems shall comply with all of the following:
| |||
1.
|
Openings shall not be located less than ten (10) feet (3,048
mm) measured in any direction from an open combustion chamber or draft
hood of another appliance located in the same room or space.
| ||
2.
|
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 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.
|
M2105.4. Delete and insert in lieu thereof the following: Piping
and tubing materials standards. Ground-source heat-pump ground-loop
pipe and tubing shall conform to the standards listed in Table M2105.4.
However, polyvinyl chloride (PVC) and chlorinated polyvinyl chloride
(CPVC) shall not be used on geothermal ground loops both inside and
underground.
|
M2105.9. Delete entire section.
|
M2105.9.1. Delete entire section.
|
M2105.14. Delete entire section.
|
M2105.15.6. Delete entire section.
|
M2105.19. Delete and insert in lieu thereof the following: Pipe
penetrations. Openings for pipe penetrations in walls, floors and
ceilings shall be larger than the penetrating pipe. Openings in the
foundation wall underground shall be sealed to not allow groundwater
into a building.
|
M2105.28. Delete and insert in lieu thereof the following: Testing.
The assembled loop system shall be pressure tested with water at forty-five
(45) psi for fifteen (15) minutes without observed leaks. Flow and
pressure loss testing shall be performed and the actual flow rates
and pressure drops shall be compared to the calculated design values.
If actual flow rate or pressure drop values differ from calculated
design values by more than ten percent (10%), the cause shall be identified
and corrective action taken.
|
G2408.4 (305.7). Delete and insert in lieu thereof the following:
Clearances from grade. Equipment and appliances installed at grade
level shall be supported on a level concrete slab or other approved
material extending not less than two (2) inches (50.8 mm) above adjoining
grade or shall be suspended not less than six (6) inches (152 mm)
above adjoining grade. Such supports shall be installed in accordance
with the manufacturer's installation instructions.
|
G2409.1(308.1). Delete and insert in lieu thereof the following:
Scope. This Section shall govern the reduction in required clearances
to combustible materials, and combustible assemblies for chimneys,
vents, appliances, devices and equipment. Clearance requirements for
air-conditioning equipment and central heating boilers and furnaces
shall comply with Sections G2409.3 and G2409.4.
|
G2412.9 (401.9). Delete entire section.
|
G2412.10 (401.10). Delete entire section.
|
G2415.3 (404.3). Delete and insert in lieu thereof the following:
Prohibited locations. Piping shall not be installed in or through
a ducted supply, return or exhaust, or a clothes chute, chimney or
gas vent, dumbwaiter or elevator shaft.
|
G2439.7.4.1 (614.8.4.1). Delete and insert in lieu thereof the
following: Specified length. The maximum length of the exhaust duct
shall be thirty-five (35) feet (10 688 mm) from the connection to
the transition duct from the dryer to the outlet terminal. Where fittings
are used, the maximum length of the exhaust duct shall be reduced
in accordance with Table G2439.7.4.1. The maximum length of the exhaust
duct does not include the transition duct.
| |
Exception: The maximum developed length may be extended to fifty-five
(55) feet of rigid pipe if clearly labeled cleanouts are provided
within twelve (12) inches of the second elbow, at every elbow thereafter,
and at least every fifteen (15) feet of developed length thereafter.
|
G2442.4 (618.4). Delete and insert in lieu thereof the following:
Prohibited sources. Outdoor or return air for forced-air heating and
cooling systems shall not be taken from the following locations:
| |||
1.
|
Closer than ten (10) feet (3,048 mm) from an appliance vent
outlet, a vent opening from a plumbing drainage system or the discharge
outlet of an exhaust fan, unless the outlet is three (3) feet (914
mm) above the outside air inlet.
| ||
2.
|
Where there is the presence of objectionable odors, fumes or
flammable vapors; or where located less than ten (10) feet (3,048
mm) above the surface of any abutting public way or driveway; or where
located at grade level by a sidewalk, street, alley or driveway.
| ||
3.
|
A hazardous or insanitary location or a refrigeration machinery
room as identified in the International Mechanical Code.
| ||
4.
|
A room or space, the volume of which is less than twenty-five
percent (25%) of the entire volume served by such system. Where connected
by a permanent opening having an area sized in accordance with Section
G2442.2, adjoining rooms or spaces shall be considered as a single
room or space for the purpose of determining the volume of such rooms
or spaces.
| ||
Exception: The minimum volume requirement shall not apply where
the amount of return air taken from a room or space is less than or
equal to the amount of supply air delivered to such room or space.
| |||
5.
|
A room or space containing an appliance where such a room or
space serves as the sole source of return air.
| ||
Exception: This shall not apply where:
| |||
1.
|
The appliance is a direct-vent appliance or an appliance not
requiring a vent in accordance with Section G2425.8.
| ||
2.
|
The room or space complies with the following requirements:
| ||
2.1.
|
The return air shall be taken from a room or space having a
volume exceeding 1 cubic foot for each 10 Btu/h (9.6L/W) of combined
input rating of all fuel-burning appliances therein.
| ||
2.2.
|
The volume of supply air discharged back into the same space
shall be approximately equal to the volume of return air taken from
the space.
| ||
2.3.
|
Return-air inlets shall not be located within ten (10) feet
(3,048 mm) of a draft hood in the same room or space or the combustion
chamber of any atmospheric burner appliance in the same room or space.
| ||
3.
|
Rooms or spaces containing solid fuel-burning appliances, provided
that return-air inlets are located not less than ten (10) feet (3,048
mm) from the firebox of such appliances.
| ||
6.
|
A closet, bathroom, toilet room, kitchen, garage, boiler room,
furnace room or unconditioned attic.
| ||
Exceptions:
| |||
1.
|
Where return air intakes are located not less than ten (10)
feet (3,048 mm) from cooking appliances and serve only the kitchen
area, taking return air from a kitchen area shall not be prohibited.
| ||
2.
|
Dedicated forced air systems serving only a garage shall not
be prohibited from obtaining return air from the garage.
| ||
3.
|
Where a closet is provided with a supply register, taking return
air from the closet shall not be prohibited.
| ||
7.
|
A crawl space by means of direct connection to the return side
of a forced-air system. Transfer openings in the crawl space enclosure
shall not be prohibited.
|
P2503.5.1. Delete and insert in lieu thereof the following:
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 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) (34kPa) 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. Delete entire section.
|
P2603.4. Delete and insert in lieu thereof the following: Pipes
through foundation walls. A pipe that passes through a foundation
wall shall be provided with a relieving arch, or a pipe sleeve shall
be built into the foundation wall.
|
P2603.5.1. Delete and insert in lieu thereof the following:
Sewer depth. Building sewers that connect to private sewage disposal
systems shall be not less than eighteen (18) inches below finished
grade at the point of septic tank connection. Building sewers shall
be not less than eighteen (18) inches below grade.
|
P2609.1. Delete entire section.
|
P2609.2. Delete entire section.
|
P2609.3. Delete entire section.
|
P2609.4. Delete entire section.
|
P2706.3. Delete and insert in lieu thereof the following: Prohibited
waste receptors. Plumbing fixtures that are used for washing or bathing
shall not be used to receive the discharge of indirect waste piping.
| ||
Exceptions:
| ||
1.
|
A kitchen sink trap is acceptable for use as a receptor for
a dishwasher.
| |
2.
|
A laundry tray is acceptable for use as a receptor for a clothes
washing machine.
| |
3.
|
A drain or waste pipe above a trap is acceptable for use as
a receptor for mechanical equipment condensate drains.
|
P2801.8. Delete and insert in lieu thereof the following: Water
heater seismic bracing. In Seismic Design Categories D0, D1 and D2,
water heaters shall be anchored or strapped in the upper one-third
(1/3) and in the lower one-third (1/3) of the appliance to resist
a horizontal force equal to one-third (1/3) of the operating weight
of the water heater, acting in any horizontal direction, or in accordance
with the appliance manufacturer's recommendations.
|
P2903.4.3. Insert the following: P2903.4.3. Expansion Tanks.
Any system with a new or a replacement water heating apparatus shall
be provided with an approved, listed and adequately sized thermal
expansion device (expansion tank), installed within ten (10) feet
of and on the cold water supply to the water heater. The tank may
be installed in a vertical up, vertical down, or horizontal position
in accordance with the manufacturer's recommendation.
| |
Exception:
| |
1)
|
Listed non-storage instantaneous heaters having an inside diameter
of not more than three (3) inches. Water heaters, thirty (30) gallons
or less, installed under counter or in confined spaces in multi-family
units, may use adequately sized mechanical water hammer arrestors
to provide for thermal expansion with the approval of the authority
having jurisdiction or his/her representative.
|
2)
|
One- and two-family residences served by private well.
|
P2903.5. Delete and insert in lieu thereof the following: Water
hammer. The flow velocity of the water distribution system shall be
controlled to reduce the possibility of water hammer. A water-hammer
arrestor shall be installed where quick-closing valves are used. Water-hammer
arrestors shall be installed in accordance with the manufacturer's
installation instructions. Water-hammer arrestors shall conform to
ASSE 1010.
|
P2904.1. Delete and insert in lieu thereof the following: General.
When installed, the design and installation of residential fire sprinkler
systems shall be in accordance with NFPA 13D or Section 2904, which
shall be considered equivalent to NFPA 13D. Partial residential sprinkler
systems shall be permitted to be installed only in buildings not required
to be equipped with a residential sprinkler system. Section P2904
shall apply to stand-alone and multipurpose wet-pipe sprinkler systems
that do not include the use of antifreeze. A multipurpose fire sprinkler
system shall provide domestic water to both fire sprinklers and plumbing
fixtures. A stand-alone sprinkler system shall be separate and independent
from the water distribution system. A backflow preventer shall not
be required to separate a stand-alone system from the water distribution
system.
|
P3003.9.2. Delete the following word: Purple.
|
P3005.2. Insert the following: Cleanout must be a minimum of
thirty six (36) inches off the finished floor.
|
P3102.3. Insert the following: Stack required. Every building
in which plumbing is installed shall have at least one (1) stack the
size of which is not less than seventy-five percent (75%) of the required
size of the building drain. Such stack shall run undiminished in size.
|
P3103.2. Delete and insert in lieu thereof the following: Frost
closure. Where the 97.5-percent value for outside design temperature
is 0° F. (-18° C.) or less, vent extensions through the roof
or wall shall be not less than two (2) inches in diameter. Any increase
in the size of the vent shall be made not less than one (1) foot (304.8
mm) inside the thermal envelope of the building.
|
P3201.2.1. Delete and insert in lieu thereof the following:
Trap seal protection. Traps seals of emergency floor drain traps and
traps subject to evaporation shall be protected by one (1) of the
methods in Sections P3201.2.1.1 through P3201.2.1.4.
| |
Exception: Basement floor drains with a condensate line draining
to it.
|
Chapters 34 — 43. Delete entire chapters.
|
Adopt Appendix G: Swimming Pools, Spas, and Hot Tubs.
|
Appendix E. Delete and insert in lieu thereof the following:
|
LOCAL MANUFACTURED HOUSING STANDARDS
|
Section AE101. New Installation: Placement of manufactured housing
is subject to the Unified Development Order.
|
Section AE102. New Manufactured Housing Sites. On all new manufactured
housing sites, the area of the unit plus eight (8) foot surrounding
the unit must be graded level, or fill may be used to level the site.
All supports must go through fill into original soil, or fill may
be compacted per the 2015 International Building Code requirements,
Section 1802. A compaction report would be required from a soil engineer.
|
Section AE103. Manufactured units installed on foundations.
Foundations are required to be poured concrete or concrete blocks
with mortar designed to bear the weight of the unit. Footings are
required to be installed with a dimension of eight (8) inches by sixteen
(16) inches. The foundation walls shall extend a minimum of thirty
(30) inches below the surface and eighteen (18) inches above the surface.
|
Section AE104. Manufactured units may be installed on a pad
when approved in certain zone districts.
|
Section AE104.1. Types of supports.
| |
Pad: The pad for all mobile homes, including double-wide mobile
homes, must be a minimum width to cover the entire area underneath
the mobile home including the skirting. The pad shall be a minimum
six (6) inches thick concrete, reinforced with concrete wire mesh,
minimum ten (10) gauge, six (6) by six (6) inch grid; or one-half
(1/2) inch rebar twenty-four (24) inches on center both ways no more
than one (1) foot in eighty-foot slope.
|
Section AE104.2. Other requirements for securing manufactured
units not on foundations. Tie down requirement — All manufactured
homes shall be tied down in accordance with the manufacturer's specifications.
The applicant shall submit the tie down requirements, as specified
by the manufacturer, with the application for the building permit.
A system designed to withstand a ninety (90) mile per hour wind velocity
shall be a minimum approved system. Ground anchors must be used when
installing mobile units on pier footings or runners. Each anchor shall
have a registered holding strength of four thousand eight hundred
(4,800) pounds. Where the manufacturer does not provide specifications
or the specifications are less stringent, the following standards
shall apply:
|
Mobile Home Size
|
No. of Diagonal Ties Per Side
|
No of Vertical Ties Per Side
|
---|---|---|
10' — 12' Wide by 30' — 50' Long
|
3
|
2
|
10' — 12' Wide by 50' — 60' Long
|
4
|
2
|
12' — 16' Wide by 60' — 80' Long
|
4
|
2
|
*** Note: Where a unit is not designed for vertical ties, six
(6) diagonal ties per side are required***
|
Section AE105. Type, Location, and Maximum Height of Blocking
at Support Points. A minimum of eight (8) inches by eight (8) inches
by sixteen (16) inches concrete block shall be used with the open
cells placed vertically; all blocks capped with solid oak or yellow
pine wood, a minimum of one and one-half (1 1/2) inches thick,
or two (2) inch by sixteen (16) inch solid concrete block. A maximum
of two (2) cappings per stack of blocks can be used. All blocks must
be located on the supports so there is a minimum of one (1) foot of
concrete exposed beyond the outer side or end of the block. All blocks
must be set so the length of the block is perpendicular to the length
of the beams. Maximum height of all blocking shall be five (5) blocks.
|
Section AE106. Stairs, Landings, or Decks for Manufactured Homes.
At each door, there must be a set of stairs, landing or deck constructed
in compliance with the 2015 International Residential Code, Section
R312 and the 2015 Jefferson County Local Amendments to the 2015 International
Residential Code. All stairs and landings must be set on a level,
stabilized base consisting of either a minimum three (3) inch by three
(3) foot by four (4) inch deep concrete pad; or a set of four (4)
four by four treated posts, two (2) feet deep into the ground, lag
bolted to two (2) two by six treated boards across the post at grade
level. All stairs and landings must be permanently bolted to either
the home or the stabilized base. If a landing is constructed, it must
be a minimum of three (3) feet square. All decks, guardrails and handrails
must be constructed in compliance with this code. The base of all
stairs and/or edge of landings or decks cannot extend over the required
setback lines. All doors shall have decks or landings.
|
Section AE107. Unoccupied Manufactured Home Site or Manufactured
Home Park. A manufactured home shall not be reinstalled or altered
without first obtaining a permit from the Jefferson County Code Enforcement
Division. Said installation must meet all current code requirements.
In a manufactured home park, it shall be the duty of the park owner
to apply for the building permit for each manufactured housing unit
site. The installation shall meet all code requirements. Distance
from road easements, lot lines, and distance between units may be
waived whenever it is shown to the Building Official's satisfaction
that the proposed installation sought in the permit will not encroach
any further than that which previously existed.
|
Section AE108. Requirements for Plats or Diagram of Manufactured
Home Parks. All owners of manufactured home parks shall submit a plat
of their existing park within ninety (90) days showing the metes and
bounds thereof and the location of each existing trailer or manufactured
home thereupon, including the size of the units, proximity of such
unit to other units in said court, proximity of such units to all
roadways and rights-of-way both within and outside of said trailer
court, and other landmarks or buildings located within said park or
in the vicinity thereof. Such diagram or plat shall not be required
to be drafted by a professional draftsman, but shall be done in an
accurate manner utilizing accepted drafting and actual measurements
on the premises of the distances set forth in said plat and providing
an appropriate approved scale of measure in said plat.
|
Section AE109. Plans and Specifications. Plans drawn to scale
and all specifications must be submitted and approved before construction
can begin.
|
Section AE110. Gutters and Leaders. Modular and manufactured
homes installed on foundations shall be provided with gutters and
downspouts or leaders to dispose of roof drainage. These must be installed
before final inspection.
|
RECREATIONAL VEHICLES
|
In compliance with the Flood Plain Damage Prevention Ordinance,
adopted by Jefferson County, Missouri, Council.
|
Section AE111. Definition: Building Service Equipment. Refers
to the plumbing, mechanical and electrical equipment including piping,
wiring, fixtures and other accessories which provide sanitation, lighting,
heating ventilation, cooling, fire protection and facilities essential
for the habitable occupancy of a manufactured home or accessory building
or structure for its designated use and occupancy.
|
Section AE112. Maintenance. All manufactured homes and the building
service equipment, existing and new, and all parts thereof shall be
maintained in a safe and sanitary condition. All devices or safeguards
which are required by applicable codes or by the Manufactured Home
Standards shall be maintained in conformance with the code or standard
under which it was installed. The owner or the owner's designated
agent shall be responsible for the maintenance of manufactured homes,
accessory buildings, structures and their building service equipment.
To determine compliance with this Subsection, the Code Official may
cause any manufactured home, accessory building or structure to be
reinspected.
|
Section AE113. Building Service Equipment. The installation,
alteration, repair, replacement, addition to or maintenance of the
building service equipment shall conform with the applicable codes
set forth by Jefferson County.
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Section AE114. Building Service Equipment Inspections. All building
service equipment which is required as a part of a manufactured home
installation, including accessory buildings and structures authorized
by the same permit, shall be inspected by the Code Official. Building
service equipment shall be inspected and tested as required by the
applicable codes. Such inspections and testing shall be limited to
site construction and shall not include building service equipment
which is part of the manufactured home itself. No portion of any building
service equipment intended to be concealed by any permanent portion
of the construction shall be concealed until inspected and approved.
Building service equipment shall not be connected to the water, fuel
or power supply or sewer system until authorized by the Code Official.
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Section RV101. General
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Subsection RV101.1. Purpose. The provisions of the Recreational
Vehicle Section shall be an addition to the local amendments of the
2015 International Residential Code for Jefferson County, Missouri
to provide regulations and permitting requirements for the purpose
of installing and occupying recreational vehicles.
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Subsection RV101.2. Definition. A recreational vehicle as defined
and derived from the Flood Plain Damage Prevention Ordinance means
a vehicle which is: (a) built on a single chassis; (b) four hundred
(400) square feet or less when measured at the largest horizontal
projections; (c) designed to be self-propelled or permanently towable
by a light-duty truck; and (d) designed primarily not for use as a
permanent dwelling, but as temporary living quarters for recreational,
camping, travel, or seasonal use.
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Subsection RV101.3. Unless otherwise provided for in the Code
of Ordinances of Jefferson County, Missouri, Recreational Vehicles
may not be utilized as a residence.
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Section RV102. Permit Application. A permit application must
be made for the purpose of installing a recreational vehicle in an
authorized recreational vehicle (RV) park. The permit will be valid
for a period of one (1) year from the date of permit issuance.
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Section RV103. Renewal of permit. The Code Official is authorized
to issue an extension and renewal of the permit application for a
period not to exceed sixty (60) days. The request for the extension
and renewal of permit application must be made in writing and demonstrate
justifiable cause to extend such permit. The date and time limits
as set forth in this Code and as determined acceptable by the Code
Official shall be monitored by the recreational vehicle park owner,
with copies of such submitted to the Code Official at the end of each
period.
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Section RV104. Fee. Fees as related to recreational vehicles are hereby referenced in Section 500.250, Fee Schedule.
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