Utah County Roof Snow Load Requirements

Seismic load d.

Utah county roof snow load requirements.

Wind 90 mph w 115 mph gust. The north zone middle zone and the south zone are identified on the roof load zone map above. When new roofing systems will increase the roof load on a building then the roof deck. The upper limit however is not as easily determined.

Frost depth 30 is your property in a flood zone. Flat roof snow loads of 30 pounds per square foot 1 44 knm2 or less need not be combined with seismic loads. Purpose of this web site. Use the gis online map to help determine if your property falls in a floodplain.

Pg po 2 s 2 a ao 2 0 5 for a greater than ao and pg po for a less than or equal to ao. According to title 15a chapter 3 section 107 of the utah code a roof s snow load may be determined with the following equation rounded to the nearest 5 psi. Environmental standards for cache valley roof snow load 35 lbs or more sq. The north zone design live load equates to 40 pounds per square foot the middle zone equates to 30 pounds per square foot and the south zone equates to 20 pounds per square foot.

Seismic zone d1. A publication can be purchased called ground and roof snow loads for idaho by r. Since values are extrapolated rather than interpolated the estimated values for snow loads at elevations significantly higher than nearby stations sometimes lead to unreasonably high snow load estimates. The lower limit is 21 psf to meet asce 7 minimum guidelines.

Foot in valley areas. Roof snow load per design professional. This downward imposed load on the home is also known as the snow load. Use our utah ground snow loads 2019 map to easily determine the historical ground snow load utah code.

Title 15a chapter 3 section 107 for any location in the state of utah. The state has amended the snow load requirements from the ibc. Sheikh taheri published by the ui department of civil engineering 1986. Pg ground snow load at a given elevation psf.

Certain jurisdictions shaded grey have specific snow load requirements per table 1608 1 2 b that differ from the values given by. Each state has a listing of building code and applicable guidelines for snow loads as well as details about where the snow load information may be found or purchased. Roof diaphragm should be evaluated by a structural engineer to determine whether the diaphragm needs to be upgraded to meet current seismic requirements as required by current state building code. The purpose of this web site is to provide ground snow load analysis information and data gathered from all 50 states.

Ws as calculated below shall be combined with seismic loads. For canyons and all mountain areas the load is 100 lbs or more sw. You can click on the map below to find the design ground snow load for that location.