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SUBSTRUCTURE (COLUMN STUMP (Procedure (Install column stump formwork.,…
SUBSTRUCTURE
PILE CAP
Functions
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To provide the necessary combined resistance to stresses set up by the superstructure and/or ground movement.
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Pile caps and isolated piles are typically connected with grade beam to tie the foundation elements together; lighter structural elements bear on the grade beams while heavier elements bear directly on the pile cap.
Incorporated in order to tie the pile heads together so that individual pile movement and settlement is greatly reduced. The stability of the pile group is greatly increased.
Transfer the load from the structures to a pile/pile group, the load further transfer to firm soil.
Definition
A concrete block cast on the head of a pile, or a group of piles, to transmit the load from the structure to the pile or group of piles.
GROUND BEAM
Ground cantilever beam
Usually used for external structure such as beam for corridor and also partition wall outside the building.
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To support brick/block work or to form a permanent shutter to the edge of in-situ concrete floor slab.
Ordinary ground beam
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Does not have secondary beam, only has primary beam.
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COLUMN STUMP
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Stump must have a concrete or timber footing placed underneath the base of the stump. This is to spread the load transferred to the stump from the building. This support beneath the stump is called a 'pad' or 'sole plate'.
Usually concrete stumps are provided with concrete pads poured in-situ on the site. Timber stumps are provided with timber sole plates.
Procedure
- Install column stump formwork.
- Concreting and hardening of column stump.
- Leveling and hardening of RC pile cap.
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