BUILDING CONSTRUCTION 1 ARC 1523PROJECT 1 : DOCUMENTATION AND ANALYSIS PREPARED BY : WONG PEAKKY (1101A13474) 13

PILED FOUNDATIONS :

These can be defined as a series of columns constructed or inserted into the ground to transmit the loads of a structure to a lower level of subsoil. Piled foundations can be used when suitable foundation conditions are not present at or uneconomic.

Preformed Concrete piles :

Variety of types available which are generally used on medium to large contracts of not less than one hundred piles where soft soil deposits overlie a firmer strata. These piles are percussion driven using a drop or single acting hammer.

Pile dimension (mm) Possible No. of locks per joint

250 x 250, 300 x 300, 4350 x 350 and 400 x 400 350 x 350 , 400 x 400 and 450 x 450 8

Partially preformed piles : These are composites piles of precast concrete and in-situ concrete or steel and in-situ concrete. These percussion driven piles are used on medium to large contracts where bored piles would not be suitable owing to running water or very loose soils. large contracts where bored piles would not be suitable owing to running water or very loose soils.

4.1 FOUNDATION