In Cast in situ piles more concrete is consumed as at the site there is enough loss of concrete sometimes due to poor workmanship.As the precast piles are casted in factories equipped with machinery and robots thus less labor is required in pre-cast piles but this is not the case of cast in situ piles which require intensive labor.The concrete during pouring of cast in situ piles is usually done from a height thus quality of work cannot be ensured.As the pre-cast piles are manufactured in factories and assembly plants the controlling of quality and quantity is easy and can be ensured without a hack but in case of cast-in-situ piles it is very difficult to control mix as well quality of the concrete.No serious attention is required for joints in cast in situ piles as compared with precast driven piles.As the materials and machinery used are usually from the local community local contractors can do the job and not any serious skilled labor is needed for cast in situ piles.Once the piles are casted no maintenance is needed.Due to this monolithic connection, cast in situ pile has an advantage of having more resistance to the earthquake and wind forces.The top ground is excavated upto pile cut off level from where the slushy low quality concrete is removed using hand hilty to get developed rebars into the pile cap. Cast in situ piles are connected above ground with a pile cap using a monolithic approach.Precast piles on the other hand are to be designed to cater the handling and driving stresses thereby increasing the reinforcement required which is not in the case of cast in situ piles thus reducing the amount of reinforcement needed.The cast in situ concrete piles usually do not require any foreign materials and equipments and usually indigenous equipments and materials will suffice the need of a project thus making the cast-in-situ piles as a cheaper and adaptable type of pile foundation.
#Bidule pour pile skin
Cast in situ piles can fully utilize the skin friction resistance with the ground during design stages which cannot be considered as in case of driven piles which only uses the end bearing.In case of water logged area, cast in situ piling with permanent casing is more suitable.In such areas cast in situ piling is more effective. In housing area, by hammering in driving the piles may cause huge sound pollutions.As explained above cast in situ piles are installed by pre-excavation, thus eliminating vibration due to driving as in case of driven piles.
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