Chapter 15.35
ADOPTION OF THE 2022 EDITION OF THE CALIFORNIA RESIDENTIAL CODE
Sections:
15.35.010 Adoption of the California Residential Code, 2022 Edition.
15.35.010 Adoption of the California Residential Code, 2022 Edition.
The 2022 Edition of the California Residential Code (Part 2.5 of Title 24 of the California Code of Regulations) is hereby adopted by reference. A copy of the residential code as adopted is on file in the office of the building official and is open for public inspection. [Ord. 389 § 7, 2023; Ord. 368 § 7, 2019; Ord. 364 § 3, 2019; Ord. 344 § 7, 2016; Ord. 329 § 10, 2013; Ord. 311 § 9, 2011.]
15.35.020 Amendments.
Table R301.2 is revised to read as follows:
|
GROUND SNOW LOAD |
WIND DESIGN |
Seismic Design Category |
Subject To Damage From |
|
|
|
|
|
|||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Speed |
Topographic Effects |
Special Wind Region |
Wind Bourne Debris |
Weathering |
Frost Line Depth |
Termite |
Winter Design Temp |
Ice Barrier Underlayment |
Flood Hazard |
Air Freezing |
Mean Annual Temp |
||
|
Zero |
95/110 |
Yes |
No/Yes |
No |
D1,D2,or E |
Negligible |
12-24" |
Very Heavy |
43 |
No |
Yes/No |
0 |
63 |
Section R403, Footings. Sections R403.1.2, R403.1.3, R403.1.4, R403.1.5 and R403.1.61 of the CRC are amended to read as follows:
R403.1.2 Continuous Footings in Seismic Design Categories D0, D1, D2, and E. Exterior walls of buildings located in Seismic Design Categories D0, D1, D2, and E, must be supported by continuous solid or fully grouted masonry or concrete footings. Other footing materials or systems must be designed in accordance with accepted engineering practice. The braced wall panels at exterior walls of buildings located in Seismic Design Categories D0, D1, D2 and E must be supported by continuous footings. All required interior braced wall panels in buildings must be supported by continuous footings.
The exception is deleted in its entirety.
R403.1.3 Footing and Stem wall reinforcing in Seismic Design Categories D0, D1, D2 and E. Concrete footings located in Seismic Design Categories D0, D1, D2, and E, as established in Table R301.2(1), must have minimum reinforcement in accordance with this section and Figure R403.1.3. Reinforcement must be installed with support and cover in accordance with Section R403.1.3.5.
R403.1.3.1 Concrete stem walls with concrete footings. In Seismic Design Categories D0, D1, D2, and E, where a construction joint is created between a concrete footing and a concrete stem wall, a minimum of one No. 4 vertical bar must be installed at not more than four feet (4’) on center. The vertical bar must have a standard hook and extend to the bottom of the footing and must support and cover as specified in Section R608.5.4.5. A minimum of one No. 4 horizontal bar must be installed within 12 inches of the top of the stem wall and one No. 4 horizontal bar must be located 3 to 4 inches from the bottom of the footing.
R403.1.3.2 Masonry stem walls with concrete footings. In Seismic Design Categories D0, D1, D2, and E, where a masonry stem wall is supported on a concrete footing, a minimum of one No. 4 vertical bar must be installed at not more than four feet (4’) on center. The vertical bar must have a standard hook and extend to the bottom of the footing and must have support and cover as specified in Section R403.1.3.5.3 and extend a minimum of 14 inches into the stem wall. Standard hooks must comply with Section R608.5.4.5. A minimum of one No. 4 horizontal bar must be installed within 12 inches of the top of the wall and one No. 4 horizontal bar must located 3 to 4 inches from the bottom of the footing. Masonry stem walls must be solid grouted.
R403.1.3.3 Slabs-on-ground with turned-down footings. In Seismic Design Categories D0, D1, D2, and E, slabs on ground cast monolithically with turned-down footings must have a minimum of one No. 4 bar at the top and the bottom of the footing or one No. 5 bar or two No. 4 bars in the middle third of the footing depth. Where the slab is cast monolithically with the footing, No. 3 or larger vertical dowels with standard hooks on each end must be installed at not more than 4 feet on center in accordance with Figure R403.1.3, Detail 2. Standard hooks must comply with Section R608.5.4.5.
R403.1.3.4 Interior bearing and braced wall footings in Seismic Design Categories D0, D1, D2, and E. In Seismic Design Categories D0, D1, D2, and E, interior footings supporting bearing walls or braced wall panels, and cast monolithically with a slab on grade, must extend to a depth of not less than 12 inches below grade.
R403.1.3.6 is deleted in its entirety.
R403.1.6.1 Foundation anchorage in Seismic Design Categories C, D0, D1, D2, and E. In addition to the requirements of Section R403.1.6, the following requirements apply to wood light-frame structures in Seismic Design Categories D0, D1, D2, and E and wood light-framed townhouses in Seismic Design Category C.
Section R902.1 of the 2022 Edition of the California Residential Code is hereby amended to read as follows:
R902.1 Roofing covering materials. The roof assembly on any structure regulated by this code shall be as set forth in Sections R904 and R905, except that only fire-retardant roof coverings meeting Class A roofing assemblies are permitted in the City of Calimesa. Roof coverings required to be listed by this section shall be tested in accordance with ASTM E 108 or UL 790.
Exception: The roofing assembly includes the roof deck, underlayment, interlayment, insulation and covering, which is assigned a roof classification.
[Ord. 389 § 7, 2023; Ord. 368 § 7, 2019; Ord. 344 § 7, 2016; Ord. 329 § 10, 2013; Ord. 311 § 9, 2011.]