Roof Snow Load Map

The ground snow load p g shall be indicated.

Roof snow load map.

Use our asce ground snow loads map to easily obtain the ground snow load figure 7 1 of asce 7 10 for any location in the contiguous united states. Psf pounds per square foot above line 60 psf. In areas where the ground snow load p g exceeds 10 pounds per square foot psf 0 479 kn m 2 the following additional information shall also be provided regardless of whether snow loads govern the design of the roof. The snow load that is applied to our structure is not the ground snow load but in most cases the flat roof snow load.

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. Snow load importance. This is considerably less than the 25 psf that the old codes required. Imbalanced snow loads variations in the amount of snow for a typical building in most of ohio the ground snow is 20 psf.

Oregon snow load map provide feedback. Sliding snow from a sloped roof. In areas where the ground snow load p g exceeds 10 pounds per square foot psf 0 479 kn m 2 the following additional information shall also be provided regardless of whether snow loads govern the design of the roof. The north zone middle zone and the south zone are identified on the roof load zone map above.

0 7 x pg ground snow load pf roof snow load roof snow load examples. You can click on the map below to determine the design ground snow load latitude and longitude and elevation for that location. The ground snow load p g shall be indicated. Allowing for the snow that blows off the actual design load can typically be reduced to 14 psf.

The ground snow load map shown below was scanned from the asce 7 10 figure 7 1. Flat roof snow load p f. The north zone design live load equates to 40 pounds per square foot the middle zone equates to 30 pounds per square foot and the south zone equates to 20 pounds per square foot. Non shaded cs areas require site specific case studies to establish ground snow loads.

To calculate roof snow load per residential building code. In our case let s assume that our structure has a flat roof roof slope 5. 0 7 x 50 psf 35 psf. 0 7 x 60 psf 42 psf below line.

Snow exposure factor c e. Schilke civil agricultural engineering montana state university august 1989. The flat roof snow load is calculated using formula 7 3 1. The minimum design roof snow load.

This downward imposed load on the home is also known as the snow load. P mapper mapserver php mapscript framework. Flat roof snow load p f.