Nevada

Statewide summary — confirm with your building department before designing

This audit corrected two values on this row. The seismic design category was C, which matched neither of Nevada's population centres. Clark County, which holds roughly three quarters of the state's residents, adopts seismic design category D0 in its Southern Nevada amendments to the 2024 IRC Table R301.2, and Washoe County adopts D2 in its Northern Nevada amendments; the USGS ASCE 7-16 design maps at Site Class D and Risk Category II independently return D for both Las Vegas and Reno. The stored value is now D. Termite risk was slight; Clark County's adopted table says moderate and Washoe County's says moderate to heavy, so slight fell outside that band entirely and is now moderate. The remaining numbers on this row cannot be made right by any single value. Clark County adopts a 98 mph ultimate design wind speed at Risk Category II while Washoe County adopts 120 mph as a special wind region, against the 115 stored here. Clark County adopts a 12 inch frost depth below 5,000 feet while Washoe County adopts 24 inches. Ground snow load is negligible on the Las Vegas valley floor, but Washoe County's adopted table gives 43 psf at Reno elevations and rises into the hundreds of psf in the Sierra and the Tahoe basin, so the 10 psf shown here is meaningless in northern Nevada. Washoe County adopts a winter design temperature of 17 degrees Fahrenheit. Carson City sits in higher ground motion than Reno again. Take your own numbers from your building department before designing anything.