Applicable Codes and Standards
2022 California Building Code (based on the 2021 International Building Code)
2022 California Residential Code (based on the 2021 International Residential Code)
2022 California Electrical Code (based on the 2020 National Electrical Code)
2022 California Plumbing Code (based on the 2021 Uniform Plumbing Code)
2022 California Mechanical Code (based on the 2021 Uniform Mechanical Code)
2022 California Fire Code (based on the 2021 International Fire Code)
2022 California Green Building Standards
2022 California Energy Efficiency Standards
Seismic Design Categories, SDC, are based on specific site locations. Values for spectral response accelerations, S1 and SS, and damped spectral response accelerations, SD1 and SDS, may be determined at the US Seismic Design Maps tool . These values, along with the risk category (most buildings in Santa Cruz County will be Risk Category I, II or III, with residences as Risk Category II), will determine the SDC. Most of Santa Cruz County will be SDC D or E. Use site soil Class D, unless a geotechnical report determines otherwise. For structures required to have a structural analysis (non-conventional), See ASCE Standard 7-16, Chapter 11, for complete Seismic Design Criteria.
Basic wind speed, V (3 second gust), is 90 mph for Risk Category II buildings (most buildings). Santa Cruz County has various exposure categories, so the design must be site specific. Exposure categories B (urban and suburban areas), C (open terrain with scattered obstructions or areas that are not Exposure B or D) or D (unobstructed areas and ocean front areas) all exist in Santa Cruz County. For structures required to have a structural analysis (non-conventional), See CBC 1609 or ASCE Standard 7-16, Chapter 26, for complete Wind Design Criteria.
Those areas mapped in a State Responsibility Area, SRA, shall comply with the Materials and Construction Methods for Exterior Wildfire Exposure in CBC, Chapter 7A for non-residential and CRC R337 for one and two family dwellings and townhomes. The county's GIS will determine if a project is in a State Responsibility Area, SRA. See WUI Codes for CBC 7A requirements, which generally mirror CRC R337 requirements.
For energy compliance, use Climate Zone 3. See the California Energy Commission's website.