If you want to calculate these values by hand use the following formulas.
Snow loads for church roofs.
Ground snow load pg.
Figure 7 1 pages 84 85 and table 7 1 page 92.
Boca also allows you to reduce the snow load for roofs with slopes greater than 30 degrees presumably because snow will slide or blow off steeply pitched roofs.
You can shovel out a cubic foot of snow from the roof place it in a container and quickly weight it on a scale.
Copper is very resistant to fire.
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.
Other considerations for sloped roofs can be found throughout chapter 7 of asce 7 10.
Snow loads are influenced by elevation general weather and moisture patterns slope direction exposure roof or trail bridge configuration and wind direction and severity.
This makes it perfect for low pitched roofs.
This prevents snow from endangering the roof structure.
Length of high roof lu.
Snow load thickness density.
Overestimation of snow loads can unnecessarily increase the cost of construction.
The flat roof snow load is calculated using formula 7 3 1.
The snow load that is applied to our structure is not the ground snow load but in most cases the flat roof snow load.
For dead loads you are correct.
Length of low roof ll.
Then measure the depth of snow on the roof and multiply it by the weight of a cubic foot of that snow.
But even if it would happen the roof will resist any load.
The boca code recognizes this and allows you to use the horizontal projection of the roof when calculating snow loads.
Snow loads will just slide off the roof.
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.
Once you know these values our snow load calculator automatically finds the total weight of snow on your roof.
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.
Arch 331 note set 13 1 s2014abn 2 determining dead load from material weights.
Horizontal distance from eave to ridge.
If your roof is 1 000 square feet the total snow load is 15 000 pounds of snow.
Length of roof upwind of the snow drift.
From eave to ridge w.
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.
