Earth Retention

Earth Retention Systems include three main areas: slurry walls, CBSP walls and secant pile shafts. All three of these sections are outlined below along with links to some of our work. If you are looking for more information, be sure to visit our contact us to request more information.

Slurry Walls

A Slurry Wall is a technique used to build reinforced concrete walls in areas of soft earth close to open water or with a high groundwater table. This technique is typically used to build diaphragm (water-blocking) walls surrounding tunnels and open cuts, and to lay foundations.

Slurry Walls

Advantages

  • Provides strong watertight walls
  • Minimizes settlement of adjacent structures
  • Provides underpinning
  • Proven technology

CBSP Walls

Cement Bentonite Soldier Pile Walls, also known as CBSP, are a cost-effective means for watertight support of excavation that has little to vibration to adjacent structures. CBSP is typically used for temporary open-cut structures.

CBSP Walls

Advantages

  • Cost-effective method for watertight temporary support of excavation
  • Minimizes settlement of adjacent structures
  • Less noise and reduced vibrations

Secant Pile Shafts

Secant piles are drilled shafts, constructed so the shafts overlap each other to form a wall. The construction sequence involves drilling every other shaft and then, after the concrete has set in, returning to pour the shafts for the secondary piles. Secant piles are used to build cutoff walls for the control of groundwater inflow and to minimize ground movement.

Secant Pile Shafts

Advantages

  • Increased construction alignment flexibility
  • Increased wall stiffness compared to sheet piles
  • Can be installed in difficult ground conditions
  • Less noise and reduced vibrations

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