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RRJ participated as part of a team to investigate the fire-induced damage to the historic granite cladding stones on the south portico of the California State Capitol building built in 1874, to assess the possibility of hidden stone damage not identified by the restoration architect and contractor’s repair plans. The damage reportedly occurred as the result of a high-speed truck impact with the building after the driver drove up the south stairs and through the eastern most south elevation arch.
RRJ’s on-site examination of representative south portico granite cladding stones, review of the repair plans, shop drawings, and impact echo testing, as well as previous experience with other damaged stone facades included several findings and recommendations