Roof Snow Load Map

Schilke civil agricultural engineering montana state university august 1989.

Roof snow load map.

Psf pounds per square foot above line 60 psf. In our case let s assume that our structure has a flat roof roof slope 5. P mapper mapserver php mapscript framework. The ground snow load map shown below was scanned from the asce 7 10 figure 7 1.

The latitude and longitude elevation normalized ground snow load and ground snow load are displayed for the user for any selected location. The snow load that is applied to our structure is not the ground snow load but in most cases the flat roof snow load. 60 ground snow psf below line 50 psf 50 ground snow psf. 0 7 x pg ground snow load pf roof snow load roof snow load examples.

Other considerations for sloped roofs can be found throughout chapter 7 of asce 7 10. A b c d e f g h 1 j k l m n o p q r s t u v w y. The minimum design roof snow load. When using figure 1608 2 for sites at elevations above 1 000 feet 304 m the ground snow load shall be increased from the mapped value by 2 psf 0 095 kn m2 for every 100 feet 30 480 mm above 1 000.

Oregon snow load map provide feedback. This downward imposed load on the home is also known as the 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. Ground snow loads of 684 communities listed aphabetically by town name.

0 7 x 50 psf 35 psf. Additionally users can navigate around the map by zooming in out and moving north south east west and then clicking a location on the map to determine a ground snow load value for the selected location. 0 7 x 60 psf 42 psf below line. To calculate roof snow load per residential building code.

The north zone middle zone and the south zone are identified on the roof load zone map above. Why snow load information. A great deal of confusion currently exists among engineers architects recreation specialists and maintenance personnel concerning the proper snow loading to use for the design and maintenance of trail bridges building roofs and other structures in mountainous high snow load areas. The flat roof snow load is calculated using formula 7 3 1.