Cal. Code Regs. tit. 25, § 1433
(a) Except as provided in section 1443.1 of this article, every cabana installed on or after July 31, 1976, or every accessory building or structure or building component installed on or after June 10, 1979, shall have the capacity to resist the applicable minimum snow load of the region in which it is installed or as is provided by this section.
(1) Region I includes the following counties:
Alameda, Butte, Colusa, Contra Costa, Del Norte, Glenn, Humboldt, Imperial, Kings, Lake, Los Angeles, Marin, Mendocino, Merced, Monterey, Napa, Orange, Sacramento, San Benito, San Diego, San Francisco, San Joaquin, San Luis Obispo, San Mateo, Santa Barbara, Santa Clara, Santa Cruz, Solano, Sonoma, Stanislaus, Sutter, Ventura, Yolo.
(2) Region II includes the following counties:
Amador, Fresno, Inyo, Kern, Modoc, Riverside, San Bernardino, Siskiyou.
(3) Region III includes the following counties:
Alpine, Calaveras, El Dorado, Lassen, Madera, Mariposa, Mono, Nevada, Placer, Plumas, Shasta, Sierra, Tehama, Trinity, Tulare, Tuolumne, Yuba.
Note: An accessory structure located beneath another accessory structure (e.g., a porch which is located beneath an awning) is excluded from the snow load requirements of this section when the overlying accessory structure meets the requirements of this section.
TABLE 1433-1
General Roof Live Load Requirements for Accessory Buildings or Structures and Building Components
Region I
Region II
Region III
Roof Live
Roof Live
Roof Live
Elevation
Load
Elevation
Load
Elevation
Load
All
Elevations
20 psf
0-3000 ft
20 psf
0-2000 ft
20 psf
3001-3500 ft
30 psf
2001-3000 ft
30 psf
3501-5000 ft
60 psf
3001-4000 ft
60 psf
Table 1433-1 shall apply except where either greater or lesser snow loads have been established through survey of the region, and approved by the department.
Note: Authority cited: Sections 18300 and 18610, Health and Safety Code. Reference: Section 18552, Health and Safety Code.
1. New section filed 7-6-2004; operative 7-6-2004 pursuant to Government Code section 11343.4 (Register 2004, No. 28).
2. Amendment of subsection (a), Table 1433-1, subsection (b) and Note filed 12-26-2006; operative 1-2-2007 pursuant to Government Code section 11343.4 (Register 2006, No. 52).