General Structural Design Criteria for Grants Pass
Earthquake Loads - The 2019 Oregon Structural Specialty Code section 1613 is used to design for earthquake loads. For residential construction the 2021 Oregon Residential Specialty Code lists Grants Pass as being in seismic zone D1.
Wind Exposure - The 2019 Oregon Structural Specialty Code section 1609 is used to design wind loads. For residential construction the 2021 Oregon Residential Code uses section R301.2.1.
Soil Pressure - Soils bearing pressure is 1,500 pounds per square foot, unless justified by a soils report. A lesser bearing pressure may be required in specific locations.
Snow Load - 2019 Oregon Structural Specialty Code (see section 1608 for snow loads). 2021 Oregon Residential Specialty Code is 25 pounds per square foot roof snow load.
Rainfall - Rainfall design is based on 1.3 inches per hour.
Frost Depth - The frost depth is 12 inches.
Current Codes in Effect in Grants Pass
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