Use our roof snow load calculator to determine your design roof snow loads.
Roof snow load by zip.
The minimum design roof snow load.
Figure 7 1 pages 84 85 and table 7 1 page 92.
However a south roof load zone home cannot be installed in either a middle or north roof load zone.
From eave to ridge w.
Snow loads are influenced by elevation general weather and moisture patterns slope direction exposure roof or trail bridge configuration and wind direction and severity.
Overestimation of snow loads can unnecessarily increase the cost of construction.
Roof loads are a downward vertical force on the home.
For additional questions or concerns about specific ground snow loads please call us at 1 425 741 5555.
In our case let s assume that our structure has a flat roof roof slope 5.
The north zone middle zone and the south zone are identified on the roof load zone.
Snow loads shall be determined by the building official.
Length of roof upwind of the snow drift.
You only need to fill in either the city and state or the zip code.
Other considerations for sloped roofs can be found throughout chapter 7 of asce 7 10.
Length of high roof lu.
If you need to gather ground snow load data programmatically please consider our api service.
Ground snow load pg.
Pursuant to montana law the minimum design roof snow load after allowed reductions shall be 30 psf.
Length of roof downwind of the snow drift.
Groundsnowbyzip is a tool for architects engineers and builders to easily determine the ground snow load figure 7 1 table 7 1 for alaska of asce 7 05 for any location in the continental united states to determine the design ground snow load fill in the address below.
The snow load that is applied to our structure is not the ground snow load but in most cases 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.
Schilke civil agricultural engineering montana state university august 1989.
If your roof is 1 000 square feet the total snow load is 15 000 pounds of snow.
If you live in the us our snow load calculator compares the total weight on your roof with the permissible load calculated according to the standards issued by the american society of civil engineers regarding the minimum design loads for buildings and other structures asce7 16.
Length of low roof ll.
In areas of the state outside of certified city county and town jurisdictions the design snow load shall be based on the ground snow loads developed in snow loads for structural design.
In areas of the state outside of certified local government jurisdictions the design snow load shall be based on the ground snow loads developed in snow loads for structural design in montana authored by f f.
The flat roof snow load is calculated using formula 7 3 1.
Horizontal distance from eave to ridge.
