Crrel and senh then entered into a cooperative research and development agreement crda to determine ground snow loads for 140 new hampshire towns in the cs zone of the snow load map in the 1995 edition of asce standard 7 i e asce 7 95.
Roof snow load new hampshire.
Purpose of this web site.
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.
Use our roof snow load calculator to determine your design roof snow loads.
The minimum design roof snow load.
Schilke civil agricultural engineering montana state university august 1989.
You should take note that franklin nh had a 94 psf snow load once.
You will notice a table in the pdf which contains tables of several towns and the maximum snow loads ever achieved.
Ground snow loads derived from new hampshire snow load study ercd crrel tr 02 6.
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.
The majority of nh requires case studies to determine ground snow loads in a specific community.
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.
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.
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.
The purpose of this web site is to provide ground snow load analysis information and data gathered from all 50 states.
Unfortunately most buildings constructed during those years 1970 2000 do not even meet the 40 psf requirement.
The same snow load map is in asce 7 95 and asce 7 98 and will be in asce 7 02.
Having a higher snow load means the framing materials used on the roof must be bigger.
But a new product from a barrington design and manufacturing company could give building owners and municipalities an early warning when heavy snow loads are making roofs dangerously.
In the scale of things a small cost compared to the whole project.
