8/7/2013

Installation of a new roof at the historic Sutter's Fort in Sacramento, Calif., will include work to help mitigate earthquake damage, according to this article. Sheets of half-inch plywood will be placed on top of the building's existing roof before a new one is installed to serve as a "seismic diaphragm," said project manager Gary Smith. The roof work is part of a renovation of a building to maintain its historical significance.

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