(For use with the International Building Code 2021 or the American Society of Civil Engineers - Minimum Design Loads for Buildings and Other Structures ASCE 7-16.)
- Wind Load:
Basic wind speed, V (3-second gust wind speed) = 150 miles per hour - Snow Load:
Ground snow load, pg = 50 pounds per square foot - Earthquake Load:
Maximum considered earthquake ground motion-
0.2 second spectral response, Ss = 0.97 g
1.0 second spectral response, S1 = 0.60 g - Frost Depth:
Minimum of 18 inches required from finish grade to base of footing or base of non-frost susceptible fill. - Wind Exposure Definitions
Codes in effect in Sitka:
Residential (adopted by Sitka General Code):
- 2021 International Residential Code (not including plumbing and electrical)
- 2021 Uniform Plumbing Code
- 2020 National Electrical Code
Commercial (adopted by State statute and Sitka General Code)
- 2021 International Building, Fire, and Mechanical Codes
- 2021 Uniform Plumbing Code
- 2020 National Electrical Code
- 2021 International Existing Building Code
