Roof Load City Of Portland

Default allowable foundation bearing capacity within the city of portland is 1 500 psf minimum 12 wide footing.

Roof load city of portland.

Adopted codes and standards. City of portland oregon bureau of development services. Please refer to city of portland title 24 85 for additional information. Translation interpretation modifications accommodations alternative formats auxiliary aids and services.

This may not be reduced for slope or any other conversion factor and may be only modified where applicable by a rain on snow surcharge oregon structural specialty code ossc section 1608 1. Minimum roof snow load. Default lateral soil load for the design of basement and retaining walls supporting level backfill shall be 40 psf ft for laterally unrestrained retaining walls and 60 psf ft for laterally restrained retaining walls. P mapper mapserver php mapscript framework.

And to provide that information on the permit form provided for that purpose. 15 of the existing roof sheathing a maximum of three layers of roofing is allowed except in a wildfire hazard zone replace doors or windows if the existing openings are not widened or reduced in size install swings and other play structures build a fence up to seven feet high except in front setback areas refer to the fence guide. The city of portland ensures meaningful access to city programs services and activities to comply with civil rights title vi and ada title ii laws and reasonably provides. Work with development services online by phone or email.

To request these services contact 503 823 4000 or tty 503 823. Dead load plus live load required at the time of the building was constructed or the total dead load plus 25 s f. Oregon snow load map provide feedback. The minimum design roof snow load for all structures in oregon is 20 pounds per square foot psf.

Oregon requires a minimum roof snow load of 20 psf pm in asce7 for all roofs plus a 5 psf rain on snow surcharge for many roof types resulting in a 25 psf minimum roof design load for most roofs. Only the properly adjusted loads can be used to design roof structural elements. A seismic upgrade may be required for existing buildings undergoing a change of use or occupancy addition renovation alteration or urm building re roof. We need all the following information to set up an appointment.

City of portland title 24 85 governs mandatory seismic upgrades for existing buildings.