Why are holes present in steel plates connecting to H-piles?

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There are two kinds of holes present in the steel plate connected to H-piles in the pile cap. The first kind of holes is designed to be filled with welding for better connection with H-piles. The second kind of holes is present to facilitate concreting works of the pile caps.

In fact, the void space underneath the steel plate is hardly to be accessed by concrete and these holes provide alternative paths to gain entry into these hidden void.


This question is taken from book named – A Self Learning Manual – Mastering Different Fields of Civil Engineering Works (VC-Q-A-Method) by Vincent T. H. CHU.

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