Roof Slope And Snow Load

The sloped roof snow load ps is found by multiplying the the value of csdepends on such factors as the slope of the roof.

Roof slope and snow load. Fresh powder weighs much less than wind packed drifts. P s c s p f. Snow load thickness density. Snow varies in weight depending on the density.

Snow loads acting on a sloping surface shall be assumed to act on the horizontal projection of that surface. The thermal factor c t from table e 3 determines if a roof is cold or warm slippery surface values shall be used only where the roof s surface is unobstructed and sufficient space is available below. The sloped roof snow load p s shall be obtained by multiplying the flat roof snow load p f by the roof slope factor c s. P s c s p f where.

The final step in calculating the snow load is to multiply the volume of snow on the roof by its density. Sloped roof snow loads i s when the roof slope is greater than 5 the roof is considered sloped. The sloped roof snow load is calculated using equation 7 4 1. Is the roof warm or cold.

Find the snow density. Check out our snow weight calculator to find the density of various types of snow. Before moving on multiply the area by the snow depth in feet to find the volume of snow on the roof. If your roof is 1 000 square feet the total snow load is 15 000 pounds of snow.

C s roof slope factor. Once you know these values our snow load calculator automatically finds the total weight of snow on your roof. If you want to calculate these values by hand use the following formulas. Sloped roof snow loads are assumed to be acting on the horizontal projection of the surface.