# How do I Calculate Snow Roof Loads?

To calculate snow roof loads, you'll need to know how much weight the roof can hold, and calculate the weight of the average snowfall that would land on said roof.
Having lived in Colorado for years I can say I personally know how we gauge how much snow our roof can hold. First I should say that it is always best to shovel it off when you can before another storm is coming. We calculate at 20 pounds a foot of snow. But a way to calculate how much snow load is on your roof is to measure the depth of snow. Calculate that times what 1 square foot of snow off your roof weighs. If you have 10 inches of snow and 1 square foot of it weighs 1 lb. that equals 10 lb. weigh load.
Most modern roofs have a 40 lb square foot snow load. Mobile home usually have a 30 lb snow load.
Q&A Related to "How do I Calculate Snow Roof Loads?"
 1. Push the ruler or yardstick into the snow vertically in a spot that is representative of the overall snow depth and record the depth in inches. 2. Convert your depth measurement http://www.ehow.com/how_6144596_calculate-roof-sno...
 Surface area of the roof times depth of snow gives volume of snow. Take a sample of snow and weight it to determine density (since the density of snow can vary quite a bit) Density http://wiki.answers.com/Q/How_do_you_calculate_the...
 Flat roofs are constructed basically with joists spanning the gap between two walls, covered by sheet timber or other material. In the case of timber a further, waterproof cover is http://uk.answers.yahoo.com/question/index?qid=200...
 look around your house, most floors are made of at least 2X8's, or 2X10's. see how much the load is on those floors, so that will give you an idea. like the other answer said, check http://answers.yahoo.com/question/index?qid=200702...
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