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Loads from columns transferring to pile cap bring tensile forces at the bottom of the cap. For example, by using truss analogy to investigate a pile cap sitting on two piles with a column at the centre of the pile cap, the tensile force at the bottom is proportional to the pile spacing and is inversely proportional to depth of pile cap. The bottom reinforcement is calculated to resist the tensile stressed generated from loads in columns.
Side reinforcement may not be essential in pile cap (L.A. Clark (1983)). In fact, the prime aim of the side reinforcement is to control cracking.
Nevertheless, as most pile caps are hidden from view and it is considered not necessary to give side reinforcement to pile caps based on aesthetic reason.
Occasionally, reinforcement may be calculated at the top of pile caps which serve as compression reinforcement.
This kind of reinforcement is required in case there is a limitation on the depth of pile caps. Likewise shear reinforcement is introduced to the pile caps in case there is a restriction to the depth of pile caps.
PILE CAP
Loads from columns transferring to pile cap bring tensile forces at the bottom of the cap. For example, by using truss analogy to investigate a pile cap sitting on two piles with a column at the centre of the pile cap, the tensile force at the bottom is proportional to the pile spacing and is inversely proportional to depth of pile cap. The bottom reinforcement is calculated to resist the tensile stressed generated from loads in columns.
Side reinforcement may not be essential in pile cap (L.A. Clark (1983)). In fact, the prime aim of the side reinforcement is to control cracking.
Nevertheless, as most pile caps are hidden from view and it is considered not necessary to give side reinforcement to pile caps based on aesthetic reason.
Occasionally, reinforcement may be calculated at the top of pile caps which serve as compression reinforcement.
This kind of reinforcement is required in case there is a limitation on the depth of pile caps. Likewise shear reinforcement is introduced to the pile caps in case there is a restriction to the depth of pile caps.
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