Abstract

The purpose of tie beams is to connect pile caps together. Unlike tie beams, grade beams carry walls and other loads. For this reason, grade beams are larger than tie beams. After construction of pile caps or column footings, the next step is to construct tie beams and grade beams. Supervision of rebars needs to be conducted by qualified personnel before concreting. The NYC Building Code recommends not using the vertical and lateral support capacities of pile caps. On the other hand, pile cap resting on a hard ground may be able to provide significant load-bearing capacity.

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