Structural Seismic Upgrades & Retrofits

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.

Service Capabilities

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.

Roof diaphragm shear sheathing and continuous chord strapping
Timber-to-masonry and timber-to-concrete ledger hold-down anchoring
Gymnasium, cafeteria, and high-occupancy interior seismic strengthening
Minimal-disruption execution scheduled during recess windows

Request Blueprint Review & Estimating

Send your structural drawings, architectural CAD, or framing bid documents to KB Contracting for an accurate framing scope take-off.

Technical Clarifications

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.

Parr Lumber Logo
Cudahy Lumber Logo
Crane Point Logo
Structural Components Logo
Boise Cascade / Weyerhaeuser Logo
Simpson Strong-Tie Logo
Parr Lumber Logo
Cudahy Lumber Logo
Crane Point Logo
Structural Components Logo
Boise Cascade / Weyerhaeuser Logo
Simpson Strong-Tie Logo