Roof Snow Load Requirement Grant County Wa

This prevents water infiltration along the edge of the roof.

Roof snow load requirement grant county wa. 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. Tenants union of washington state. 2 a vertical net uplift load of 9 lb ft2 1 day load duration.

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. 3001 code reference 2015 international building residential mechanical and fire codes and related standards. The underlayment should project up and sidewalls where the roof meets the side of the house 12 inches. You can click on the map below to find the design ground snow load for that location.

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. Grant county building department general information p. Ephrata wa 98823 509 754 2011 509 765 2160 800 572 0119. Snow loads and wind intensity can also be a consideration in local governments creating building ordinances.

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. Rcw 43 22 340 43 22 355 43 22 360 43 22 432 43 22 440 and 43 22 480. Box 37 ephrata wa 98823 509 754 2011 ext. Coated metal or similar roofing material with a nominal 3 12 pitch.

A manufactured home will be required to comply with any local design standards that apply to all homes in the area. 1 dead loads plus a minimum unit live load of 30 lb ft2 2 months load duration. The minimum design roof snow load. Purpose of this web site.

Use our washington ground snow loads map to easily determine the ground snow load for any location in the state of washington. The purpose of this web site is to provide ground snow load analysis information and data gathered from all 50 states. A maintain a minimum twenty pound roof live load and provide documentation to the department. All roofs must be designed to sustain loads as follows.