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A vertical unsupported cut of 15 ft.  Assume unit weight of soil is 115 pcf with c...

  1. A vertical unsupported cut of 15 ft.  Assume unit weight of soil is 115 pcf with c = 450 psf and f = 6°.  Determine:
  1. The lateral stress at the top and bottom of the cut.
  2. The maximum depth of the potential tension crack.
  3. The maximum unsupported excavation depth.
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