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Class 3 - Support of Excavation Advanced - Secant Pile Walls
  • Secant pile wall. Describe the process using sketches on white board. Primary hole, secondary hole.
  • Starter wall and special drill rig to insure alignment.
  • Impact of utilities.
  • Video showing installation of starter holes.
  • Video showing installation of secondary holes.
  • Example of completed secant pile wall including struts and walers and tiebacks.
  • Advantages of tiebacks vs. struts.
  • Struts are preloaded with hydraulic jacks supported on end brackets.

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