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Diaphragm Walls

Diaphragm walls, also known as D-Walls or slurry walls, are a robust retention system consisting of reinforced concrete walls that can be used for temporary or permanent shoring walls to depth of more than 300 feet. Diaphragm walls are formed…

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Slope Stabilization

Slope Stabilization Reinforcement Expertise Malcolm Drilling slope stabilization expertise is applied to safely and securely reinforce existing unstable slopes and to allow re-grading for development of new facilities. Malcolm's slope stabilization projects employ post-tensioned anchors, stitch piers and dewatering in…

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Soil Mix Walls

Soil mixing improves the engineering properties of soil by injecting cementitious grout and blending the materials in-situ. Soil mixed walls are constructed by overlapping elements of soil mixed ground, and inserting structural piles for reinforcing. Soil mixed walls offer a…

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Secant Piling

Secant Piling Construction System Secant piling is a robust, rigid system which can be used to construct combined earth retention and groundwater cut-off walls. The continuous wall is constructed by drilling overlapped concrete piles with diameter typically between 2 and…

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Soil Nail Systems

Soil nail systems stabilize a section or block of retained ground by installing closely spaced grouted steel rods into the exposed face as the excavation proceeds downwards. This approach provides a flexible, cost-effective and efficient earth retention solution. The rows…

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Soldier Pile Walls

Soldier pile walls provide a core system for earth retention in both temporary and permanent applications. Structural “soldier” piles are installed from original grade. Then, as the site excavation proceeds in lifts, lagging is placed between the piles to retain…

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