Roof Snow Load Map New Hampshire

In blacked out areas of that map no values are given because extreme local variations in snow loads preclude mapping at this scale clearly many of those who responded did not know they were located in.

Roof snow load map new hampshire.

A publication can be purchased called ground and roof snow loads for idaho by r. The only town or city in the state that had a national weather service station was concord and the 60 psf applied only there. 12 for any location in the state of new hampshire you can click on the map below to find the design ground snow load for that location. The majority of nh requires case studies to determine ground snow loads in a specific community.

Purpose of this web site. Use the ground snow load for new hampshire developed by the corps of engineers cold. There is no generic answer for how much snow a roof can handle. That s about 4 feet of powder and as little as 2 feet of wet snow.

It was also made by crrel. In addition you can use our interactive massachusetts ground snow loads map for. Ground snow loads for new hampshire 5 that map is an older version of the national snow load map in asce 7 98. Sheikh taheri published by the ui department of civil engineering 1986.

We recommend a safety margin of at least 10 lbs sq. The standard practice for a few decades in new hampshire was to build our roofs to support 40 pounds per square foot psf live snow load. Case studies have been performed for all cities towns and unincorprated townships in the state and are available in the. The state of new york has modified the snow load map.

What snow load capacity does the building code require. For many years builders and building code officials assumed that the ground snow load for the entire state of new hampshire was 60 pounds per square foot. Your building s roof load rating should well exceed your town s expected loads. Massachusetts the state has amended the snow load requirements of the 2009 ibc figure 1608 2 and the 2009 irc figure r301 2 5 table r301 2 1 and table r301 2 5 with the 8th edition massachusetts building code which replaces the national snow load map with state specific tabulated values by jurisdiction.

Use this information as a guide in constructing a building that will hold up for many years in our rugged climate. 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. Find your town s expected snow loads on this vermont snow load map or in the listing below. Case studies have been performed for all cities towns and unincorprated townships in the state and are available in the publication ground snow loads for new hampshire us army corps of engineers erdc crrel tr 02 6 february 2002.

Ft and more if local conditions warrant.