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Calculating Pad Style Snow Guard Layout 1 of 3 [1-2-3]
Calculating Pad Sytle Snow Guard Layout for Slate, Tile, Cedar and Other Shingle Roofs
For example, a building with a 6:12 slope, 97 psf design snow load, 62' horizontal distance, a 64' rafter length and a snow guard capability of 300 will produce the following. 6:12 slope = 26.57° and sin 26.57° = .44729 therefore y = (((.44729) X 97 X 100 X 62)) / 69.3) / 300y = 12.94 snow guards per square of roof area. This means that you will need a minimum of 13 snow guards for every 100 square feet of roof surface or 13 snow guards per square. This formula in no way takes into account the unique building site conditions. Alpine SnowGuards will not take responsibility for your calculations or misapplications of the formula provided. Generally asphalt shingle roofs or other shingle/tile/slate roofs with a rafter length of 15' or less only need the standard three-row pattern along the eave. The standard three-row pattern requires 1.7 snow guards per foot of eave or 17 snow guards per 10' of eave. |
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