Secant / Tangent Piles
Drill Tech uses two types of CIDH piles, secant piles and tangent piles, to provide additional deep foundation support for applicable projects. Both types of piles are simply two CIDH piles constructed in close proximity to further foundation support; tangent piles barely touch, and secant piles overlap to a degree designed by one of our in-house engineers.
Construction Process
Depending on the soil condition and project parameters, secant and tangent piles are constructed using a variety of excavation methods, all of which perform some type of drilling, reinforcement, and backfill. On a project without restriction, Drill Tech’s team would excavate a hole, place the designed reinforcement, and backfill with a low-strength cement. When constructing secant piles, which overlap, our contractors repeat the installation process twice and create a continuous wall of cement backfill that can be shaped to project specifications. For tangent piles, our teams drill the holes without overlap, usually in a straight line to boost foundation support.
Benefits of Use
Secant and tangent piles are frequently used to support excavation, water cut-offs, or shaft liners. Drill Tech’s equipment fleet ensures our teams can construct these piles in even the most restrictive urban basements or the hardest bedrock. Our teams have decades of experience in the design and construction of these piles and are considered a premier installer by national standards.
Applicable Projects
Retaining Walls
Deep Excavations
Landslide Mitigation
Structural Liners
Water Cut-Off
Construction Process
Depending on the soil condition and project parameters, secant and tangent piles are constructed using a variety of excavation methods, all of which perform some type of drilling, reinforcement, and backfill. On a project without restriction, Drill Tech’s team would excavate a hole, place the designed reinforcement, and backfill with a low-strength cement. When constructing secant piles, which overlap, our contractors repeat the installation process twice and create a continuous wall of cement backfill that can be shaped to project specifications. For tangent piles, our teams drill the holes without overlap, usually in a straight line to boost foundation support.
Benefits of Use
Secant and tangent piles are frequently used to support excavation, water cut-offs, or shaft liners. Drill Tech’s equipment fleet ensures our teams can construct these piles in even the most restrictive urban basements or the hardest bedrock. Our teams have decades of experience in the design and construction of these piles and are considered a premier installer by national standards.
Applicable Projects
Retaining Walls
Deep Excavations
Landslide Mitigation
Structural Liners
Water Cut-Off
Construction Process
Depending on the soil condition and project parameters, secant and tangent piles are constructed using a variety of excavation methods, all of which perform some type of drilling, reinforcement, and backfill. On a project without restriction, Drill Tech’s team would excavate a hole, place the designed reinforcement, and backfill with a low-strength cement. When constructing secant piles, which overlap, our contractors repeat the installation process twice and create a continuous wall of cement backfill that can be shaped to project specifications. For tangent piles, our teams drill the holes without overlap, usually in a straight line to boost foundation support.
Benefits of Use
Secant and tangent piles are frequently used to support excavation, water cut-offs, or shaft liners. Drill Tech’s equipment fleet ensures our teams can construct these piles in even the most restrictive urban basements or the hardest bedrock. Our teams have decades of experience in the design and construction of these piles and are considered a premier installer by national standards.
Applicable Projects
Retaining Walls
Deep Excavations
Landslide Mitigation
Structural Liners
Water Cut-Off
