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TRENCHING AND SHORING MANUAL - Caltrans
dot.ca.govSep 12, 2011 · CHANGE LETTER TRENCHING AND SHORING MANUAL – Revision No. 01 OSC TRENCHING AND SHORING MANUAL . September 12, 2011 . Attached are revisions to the Trenching and Shoring Manual. Please make the following ... Chapter 8, “Railroad”, is revised to correct the application of the boussinesq loading to comply with the Railroad's …