1608A Snow Loads — 2025 California Building Code

1608 A .1 General. Design snow loads shall be determined in accordance with Chapter 7 of ASCE 7, but the design roof load shall be not less than that determined by Section 1607 A . Exception: Temporary structures complying with Section 3103.6.1.1. 1608 A .2 Ground snow loads. The ground snow loads to be used in determining the design snow loads for roofs shall be determined in accordance with the reliability-targeted (strength based) ground snow load values in Chapter 7 of ASCE 7 or Figures 1608 A .2(1) through 1608 A .2(4) for the contiguous United States. Site-specific case studies shall be determined in accordance with Chapter 7 of ASCE 7 and shall be approved by the building official.

STRUCTURAL DESIGN

16A-20 2025 CALIFORNIA BUILDING CODE

STRUCTURAL DESIGN

STRUCTURAL DESIGN

16A-22 2025 CALIFORNIA BUILDING CODE

STRUCTURAL DESIGN

STRUCTURAL DESIGN

1608 A .2.1 Ground snow conversion. Where required, the ground snow loads, p g, of Figures 1608 A .2(1) through 1608 A .2(4) and Table 1608 A .2 shall be converted to allowable stress design ground snow loads, p g(asd), using Equation 16 A -17. Equation 16 A -17 p g(asd) = 0.7 p g

where:

p g(asd) = Allowable stress design ground snow load. p g = Ground snow load determined from Figures 1608 A .2(1) through 1608 A .2(4) and Table 1608 A .2. 1608 A .3 Ponding instability. Ponding instability on roofs shall be evaluated in accordance with ASCE 7.

The ground snow load or the design snow load for roofs shall conform with the adopted ordinance of the city, county, or city and county in which the project site is located, and shall be approved by DSA. See Section 106.1.2 for snow load posting requirements.