2007-01-08 05:12:20 · 3 answers · asked by Giggly Giraffe 7 in Science & Mathematics ➔ Engineering
This is actually a fairly complex question as indicated by the answers above. First, the weight of snow varies depending on it's water content. (Yes, different "snows" can have more or less moisture in them.)
However, if you concerned about snow overloading your house's or building's roof, then a good rule of thumb is 1 foot of snow weighs about 15lbs. (again, see disclaimer above). Most houses built after 1980 should withstand 3-4 feet of snow. If you have more than 5 feet of snow on your roof, I would definitely be concerned. The best remedy in this case is to remove the snow.
2007-01-08 06:17:48 · answer #1 · answered by Imagineer 3 · 1⤊ 0⤋
The American Society of Civil Engineers (ASCE) has published books that are used to calculate Snow Loads. The book, Minimum Design Loads for Buildings and Other Structures, SEI/ASCE 7-02 (or 7-05 a more recent book), explains the process of calculating the snow loads. Perhaps you could find a copy at a library or find something on the internet.
2007-01-08 05:32:18 · answer #2 · answered by David T 3 · 0⤊ 0⤋
You need to determine the load path from the roof to the foundation. Most probably the roof framing will govern. Thus, you need a roof framing plan at least. Then you conduct a structural analysis to see what resistance that system provides.
If I was doing the structural analysis, I would want a set of the complete building plans.
2007-01-08 05:24:55 · answer #3 · answered by daedgewood 4 · 0⤊ 0⤋