Snow Loads For Church Roofs

Arch 331 note set 13 1 s2014abn 2 determining dead load from material weights.

Snow loads for church roofs.

If you want to calculate these values by hand use the following formulas. Snow loads will just slide off the roof. The boca code recognizes this and allows you to use the horizontal projection of the roof when calculating snow loads. The snow load that is applied to our structure is not the ground snow load but in most cases the flat roof snow load.

Once you know these values our snow load calculator automatically finds the total weight of snow on your roof. Overestimation of snow loads can unnecessarily increase the cost of construction. Snow load thickness density. Length of low roof ll.

Copper is very resistant to fire. Other considerations for sloped roofs can be found throughout chapter 7 of asce 7 10. This makes it perfect for low pitched roofs. In our case let s assume that our structure has a flat roof roof slope 5.

For dead loads you are correct. Horizontal distance from eave to ridge. The flat roof snow load is calculated using formula 7 3 1. Length of roof downwind of the snow drift.

You can also find the load per square meter or square foot of roofing by opening the advanced mode. Then measure the depth of snow on the roof and multiply it by the weight of a cubic foot of that snow. Ground snow load pg. Length of high roof lu.

You can shovel out a cubic foot of snow from the roof place it in a container and quickly weight it on a scale. If your roof is 1 000 square feet the total snow load is 15 000 pounds of snow. But even if it would happen the roof will resist any 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.

Thus snow weighing 10 pounds per cubic foot and at a depth of 18 inches on a roof is exerting 15 pounds of pressure per square foot. 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. Figure 7 1 pages 84 85 and table 7 1 page 92. From eave to ridge w.

This prevents snow from endangering the roof structure. Live roof load w wind load s snow load e earthquake load r rainwater load or ice water load t effect of material temperature h hydraulic loads from soil f hydraulic loads from fluids. Length of roof upwind of the snow drift.