Snow loads roof snow loads are influenced by elevation general weather and moisture patterns slope direction exposure roof configuration and wind direction and severity.
Residential roof snow loads.
Snow loads are influenced by elevation general weather and moisture patterns slope direction exposure roof or trail bridge configuration and wind direction and severity.
On the other hand snow that stayed on your roof for a few days will settle and while it seems that the cover gets thinner its weight doesn t change it s just the density that is different.
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.
Simple design check representative of worst case combined axial and transverse loading.
For example fresh snow is soft fluffy and light.
The residential code of ohio which applies to one and two family homes shows a map indicating the required snow load.
If your roof is 1 000 square feet the total snow load is 15 000 pounds of snow.
It calls for 20 psf throughout most of ohio and 25 psf along a north south strip in the eastern half of the state.
Overestimation of snow loads can unnecessarily increase the cost of construction.
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.
The density of snow and hence its load per square foot depends on the type of snow.