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Technical Library

Technical Aspects of Retrofitting a House

Seismic retrofitting requires a good understanding of the kinds of damage that occurs in earthquakes, familiarity with tests done by seismic hardware manufacturers, and the performance qualities of plywood, nails, concrete, and steel. Retrofitting requires an understanding of building codes, both current and older.  Below you will find a series of articles and test reports for seismic retrofit contractors, engineers, and homeowners alike. /p>

Design

The Engineering behind all Designs

Base Shear Formula

Three Foundation Retrofits

Center Foundation Retrofits

Design a Cripple Wall Retrofit

Design a Retrofit for a House on a Flat Lot

Design a Retrofit for a Bolted House on a Flat Lot

Earthquake Resistance of Old Buildings

Rotation and Soft Story Retrofits

As built plans

Porches

 

Hardware

Foundation Bolts, Characteristics and Capacities

Foundation Bolts

Foundations and Rebar

Useful Hardware

Foundation Bolts and Over-sized Holes

Lag Bolt Shear Transfer Ties

Horizontal Hold Down Hillside Anchors

Efflorescence

Square Bearing Plate Washer

Repairs

Over-Driven Nails

Over-Driven Nails in Plywood

Shear Wall Repair Methods

Shear Wall Repairs with Sheet Metal

Repairs when the Floor has been Repaired with Plywood

 

Shear Walls

Shear Wall Blocking

Shear Transfer Diaphragm

Shear Wall Framing

Shear Walls Built Off the Side of a Foundation

Plywood Nailing Science

Research Report 138-High Capacity Shear Walls

ESR 1539 Non-Conventional Shear Wall Construction

Balloon Framing

Slant Nailed Plywood

Nailing Patterns for Stepped Shear Walls

Shear Wall Repair Methods

 

 

Building Codes and Materials

 

Building Codes

ACQ lumber

Useful Hardware

Simpson StrongWalls

Existing Materials

Stucco

The Performance of Drywall in Earthquakes

 

Shear Transfer Ties

 

 

 

 

 

 

 

 

 

 

 

Wood Straps are Better than Steel

 

The Post to Beam Connection

The Importance to Top Plate Connections in Cripple Wall Retrofits

Foundation Capping

Old Foundation Tests by the Structural Engineer’s Association

 

The Qualities of Wood published by the American Wood Council

 

Areas Served

San Jose,Sunnyvale, Fremont,Oakland,Berkeley
And Surrounding Areas
408-664-6355
510-548-1111

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License Info

Works' Comp RWCC64393236
Contractors Lic #558462
Bond #SC6334450
Liability Ins PCA 1045011
Link to Contractor's License Board