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  1. HB4775

    Earth Pressure for Deep Tunnel Shaft Design

    Hi All, I was wondering if anyone has latest references/sources for earth presure for deep tunnel shaft design (more than 100 feet deep). Are people still using the Terzaghi/Peck method to come up with the pressure diagram (0.65*Ka*Gamma to certain depth and then go stright line down)? TIA...

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