Why snow load information.
Roof snow load map ny.
Schilke civil agricultural engineering montana state university august 1989.
You can click on the map below to find the design ground snow load for that location.
In areas of the state outside of certified local government jurisdictions the design snow load shall be based on the ground snow loads developed in snow loads for structural design in montana authored by f f.
A great deal of confusion currently exists among engineers architects recreation specialists and maintenance personnel concerning the proper snow loading to use for the design and maintenance of trail bridges building roofs and other structures in mountainous high snow load areas.
The ground snow loads to be used in determining the design snow loads for roofs shall be determined in accordance with asce.
In some cases this lo ad may be reduced for a sloped roof to account for sliding snow and improved drainage of meltwater.
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.
This downward imposed load on the home is also known as the snow load.
The minimum design roof snow load.
Groundsnowbyzip is a tool for architects engineers and builders to easily determine the ground snow load figure 7 1 table 7 1 for alaska of asce 7 05 for any location in the continental united states to determine the design ground snow load fill in the address below.
In areas where the ground snow load p g exceeds 10 pounds per square foot psf 0 479 kn m 2 the following additional information shall also be provided regardless of whether snow loads govern the design of the roof.
Snow exposure factor c e.
Flat roof snow load p f.
As an example the flat roof snow load for a roof located in a 55 psf snow z one is typically 70 of 55 or 38 5 psf.
By multiplying the gsl by 0 7 or 70 of the ground snow load.
Snow load importance.
The ground snow load p g shall be indicated.
Town supervisor board and committees.
You only need to fill in either the city and state or the zip code.
The north zone middle zone and the south zone are identified on the roof load zone map above.
If you live in the us our snow load calculator compares the total weight on your roof with the permissible load calculated according to the standards issued by the american society of civil engineers regarding the minimum design loads for buildings and other structures asce7 16.
Chapter 16 section 1608 for any location in the state of new york.
Roof snow loads are based on the historical records for ground snow loads for a given location however the local building authority should always be consulted to determine the correct roof snow load to use for a given site and application.
