What are the two types of sandwich piles?

The two types of sandwich piles are characterized by their design and the coverage they provide during construction. The narrow pile or bottom-half is designed to effectively penetrate and stabilize the ground, while the open-face pile or full coverage offers a broader surface area, which aids in distributing the load more evenly and provides additional stability.

Understanding this distinction is crucial for applications where the load-bearing capacity and ground conditions greatly influence the choice of piling technique. One type focuses on creating a stable foundation with a narrower profile, while the other maximizes the surface area for load distribution, which can be particularly advantageous in softer or more unstable soils. Each type serves specific engineering needs, making the differentiation essential for the planning and execution of construction projects involving deep foundations.