1900 SW 4th Ave, Portland, OR 97201
Residential Engineering - General Information
Your project must be designed to meet all the requirements of the building code. This usually means that a full foundation with footings to the frost depth, and a complete lateral force resisting system are required.
The Building Code has two options for showing the building will resist lateral loads (wind and earthquake forces).
Note that plans and calculations will not be required to show that a structure will resist wind and earthquake loads if it can be considered a "minor" addition. See Lateral Bracing for Minor Dormer Additions.
There are also requirements for resisting gravity loads, and any beam over 10’ long or supporting a point load must also be submitted with beam calculations.
Visit the Plan Review Staff at the Development Services Center for more information on prescriptive and engineered paths.