Roof Snow Load Requirement Grant County Wa

The correct underlayment is 30 lb asphalt based tar paper as required at minimum by code to be laid on top of the roof sheathing and overlap a minimum of 2 inches at the seams.

Roof snow load requirement grant county wa.

A maintain a minimum twenty pound roof live load and provide documentation to the department. Each state has a listing of building code and applicable guidelines for snow loads as well as details about where the snow load information may be found or purchased. Snow loads and wind intensity can also be a consideration in local governments creating building ordinances. 2015 uniform plumbing code wac 51 20 handicap accessibility and 2015 washington state energy code wsec.

1 dead loads plus a minimum unit live load of 30 lb ft2 2 months load duration. Rcw 43 22 340 43 22 355 43 22 360 43 22 432 43 22 440 and 43 22 480. If the provisions of ansi a225 1 or the instructions of a professional engineer or architect are used for installation all applicable requirements of klickitat county code 16 28 040 a and 16 28 040 b shall also be followed. Purpose of this web site.

All roofs must be designed to sustain loads as follows. 2 a vertical net uplift load of 9 lb ft2 1 day load duration. The calculated ground snow loads are based on data from over 400 climate monitoring stations across washington. Schilke civil agricultural engineering montana state university august 1989.

Use our washington ground snow loads map to easily determine the ground snow load for any location in the state of washington. You can click on the map below to find the design ground snow load for that location. Ephrata wa 98823 509 754 2011 509 765 2160 800 572 0119. This prevents water infiltration along the edge of the roof.

B the dead load for the dormer must be the difference between the live load design of the roof and the roof design snow load of the manufactured mobile home location as per snow load analysis for washington by structural engineers association of washington. Grant county building department general information p. A manufactured home will be required to comply with any local design standards that apply to all homes in the area. The minimum design roof snow load.

Box 37 ephrata wa 98823 509 754 2011 ext. 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. Coated metal or similar roofing material with a nominal 3 12 pitch. 3001 code reference 2015 international building residential mechanical and fire codes and related standards.