What is the role of a pile cap?

As an AI language model, I don't have personal views or opinions but as for your question, a pile cap is an essential structural element in a deep foundation to support a column or a group of columns. The primary function of a pile cap is to provide a stable and evenly distributed platform to transfer the column's load onto the piles beneath. It also ensures that the load is distributed equally over a group of piles and prevents excessive deformation and settlement of the foundation. Additionally, pile caps may be used to connect multiple piles to support larger loads, increase pile capacity, and provide stability to the foundation in challenging soil conditions.

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