Building Code
Oregon Structural Specialty Code (OSSC), 2022 edition
Oregon · Licensed Professional Engineering
Structural systems designed to the loads your state actually imposes — gravity, seismic, wind, and snow — with drawings built to get approved the first time.
Structural engineering in western Oregon is dominated by the Cascadia Subduction Zone, which subjects the coast and Willamette Valley to high seismic demand — SDC D is common — and to long-duration ground motion that drives resilience-focused detailing on essential facilities. We coordinate with geotechnical engineers on liquefaction and the deep, soft soils of the Portland basin and Willamette Valley, and account for coastal tsunami-inundation zones that restrict siting of critical buildings. Oregon is also a national leader in mass timber, and we detail cross-laminated-timber and glulam systems for both gravity and, increasingly, lateral resistance. East of the Cascades, snow loads in Bend and the mountains govern roof framing. Because the statewide OSSC cannot be locally amended, the governing edition is consistent, letting us standardize seismic detailing across jurisdictions.
Code adoptions change on multi-year cycles and many states allow local amendments. The researched source verification date is 2026-07-28; we verify the governing edition with your permitting jurisdiction at project kickoff.
Oregon's uniform statewide code makes plan review consistent across jurisdictions, though metro Portland and Washington County (Hillsboro's Silicon Forest) run high-volume review. Stormwater is a defining permitting issue — Portland's on-site infiltration and green-infrastructure requirements are among the strictest in the country — and Cascadia seismic detailing is expected on essential facilities.
Oregon licenses PEs by comity for qualified out-of-state applicants and accepts electronic seals; the state applies specific rules on seal and signature requirements for digital submittals.
Oregon's construction market is anchored by the semiconductor and high-tech cluster in Washington County (Intel and the Silicon Forest), data centers in the Columbia River corridor near The Dalles and Hermiston, and steady Portland-metro commercial and institutional work. Fast-growing Bend adds high-desert development, and mass-timber construction is a notable regional strength.
Key markets: Portland, Salem, Eugene, Gresham, Hillsboro, Bend.
For projects whose jurisdiction, discipline, and scope pass review, an available licensed PE and coordinated team can be identified. Send us your scope for a proposal; timing and fee depend on the project.
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