Flat Roof Snow Load Calculator

The final step in calculating the snow load is to multiply the volume of snow on the roof by its density.

Flat roof snow load calculator.

The smallest pitch of a roof is 0 5 12. Use this same calculation to find the total weight of snow on a flat roof. If your structure has a sloped or flat roof you still need to calculate the flat roof snow load. If the snow weighs 10 pounds per cubic foot and there are 1 5 feet on the roof each square foot of the roof is getting 15 pounds of pressure.

This is all of the natural stresses imposed upon a roof such as snow loads rain loads and wind loads. You might also be interested in our snow to water volume calculator. Online snow load calculator for buildings with flat or low slope roofs for balanced snow drift and rain on snow surcharge loadings calculator asce 7 05 for structural engineers construction professionals and building planners. The balanced snow load is applied everywhere where the roof structure is located.

Estimate the total weight of snow in your garden by multiplying the size of the area in square metres by the snow load. To figure out the load on your roof take the depth of snow in feet and multiply it by the weight of a cubic foot of snow. It also informs you whether you should immediately remove some of the snow or you can wait a little bit longer. Make sure to not wait for too long though.

If you have a density range then multiply the volume by each part of the range separately to find the minimum and maximum snow load. A common choice for flat roofing material is epdm rubber as it is highly durable waterproof and can be made from recycled materials. For example using a 25 by 20 metre garden. 500 times 1 25 yields 625 kg 1 378 lb of snow.

After you obtain the roof slope factor from those sections in asce 7 10 the balanced design snow load for the sloped roof can easily be calculated using equation 7 4 1. Basing on the roof parameters you specified in the first section our snow load calculator displays the maximum allowable snow cover thickness and snow weight. Span calculator for wood joists and rafters also available for the android os. This is highly regional as weights of snow for example range from 10 to 300 pounds per square foot based on moisture and volume of the snow.

If you have any concerns as you are determining your flat roof snow load consult with a structural engineer or roofing specialist. Roof snow load calculation. Determine the transient load of the roof. For ground snow loads greater than 20 pounds per square foot the roof load is equal to 70 of the product of the exposure thermal and importance factors the ground snow load and 20 pounds.