bayarearetrofit.com/ This video is based on research done on a life threatening structural conditionfound in hillside homes that caused many deaths Los Angeles in the Northridge earthquake. The City of Los Angeles has a special retrofit building code for these homes which the Bay Area is unaware of. bayarearetrofit.com/PDFs/L.A.%... For this reason contractors and engineers can use plywood shear walls on hillside homes, even though actual earthquake damage and subsequent research has shown it does not work. Bay Area Retrofit is the only company in Northern California that knows how to retrofit these homes. The two most relevant documents related to hillside home retrofits are Voluntary Earthquake Hazard Reduction in Existing Hillside Buildings, which is the same as chapter 94 of the 1999 Los Angeles Building Code is available from the City of Los Angeles building department. The other document is titled Framing Earthquake Retrofitting Decisions: The case of Hillside Homes in Los Angeles available from UC Berkeley peer.berkeley.edu/publications... written by Nels Roselund, a practicing structural engineer and two professors of engineering.