
Structural Seismic Upgrades & Retrofits
Specialized structural framing retrofits, roof diaphragm sheathing, chord strapping, and timber-to-masonry ledger hold-down installations for existing commercial and educational buildings in Oregon and Washington.
Structural Deliverables & Engineering Alignment
Seismic upgrades demand precise structural engineering integration and surgical framing execution within existing structures. KB Contracting installs heavy steel hold-downs, structural plywood shear blading, and tension strapping to upgrade legacy buildings to modern Oregon and Washington seismic codes.
Request Blueprint Review & Estimating
Send your structural drawings, architectural CAD, or framing bid documents to KB Contracting for an accurate framing scope take-off.
Featured Structural Seismic Upgrades & Retrofits Projects
Explore real-world framing projects executed by KB Contracting for this service line across Oregon and Washington.
Service FAQs
Can seismic upgrades be performed without closing the facility?
Yes, we frequently schedule interior and roof diaphragm seismic work during off-hours or summer recess windows to keep facilities operational.
What type of hardware do you install for seismic retrofits?
We install engineered Simpson Strong-Tie hold-downs, epoxy anchor rods, heavy structural ledger bolts, and continuous steel chord straps.
We Partner Only With The Finest Suppliers
Guaranteeing superior quality, certified structural lumber, and engineered framing solutions in every project.















