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What are method statement in piling works?
Method statement of bored piles is a construction procedure which includes hole boring into the ground, installing steel reinforcement and casting with concrete to form a pile, etc.
How do you make a pile cap?
Pile caps are constructed by excavating an area around the group of piles to enable formwork to be inserted. The pile tops may be trimmed to ensure they are at the same height. A reinforcement cage is then built and positioned in the formwork cast box and fastened to the piles.
How do you cut pile heads off?
Pile head trimming or cut off in the construction sequence is exposing the reinforcement for incorporation into the pile cap. Cast in place bored concrete piles should always be poured to a level above the specified cut-off such that, after pile trimming, a sound concrete connection with the pile can be exposed.
What is the cut off level of pile?
Pile Cut-off level is the actual level at which the piles below pier are made to be of the same level. The concrete of pile is cut-off at the specified level (given in the specifications or drawings usually around 75 mm) while the steel is kept projected in-to the pile cap to make an effective bond.
How are bored piles construction?
Bored Pile Construction Process
- The construction starts by drilling a vertical hole into the soil using the bored piling machine.
- The piles drilled can go up to a depth of 60 m and a diameter of 2.4 m.
- A temporary steel cylinder or sleeve is inserted into the drilled hole until the pile is poured.
What is a pile driver used for?
A pile driver is a device used to drive piles into soil to provide foundation support for buildings or other structures. The term is also used in reference to members of the construction crew that work with pile-driving rigs. One type of pile driver uses a weight placed between guides so that it can slide vertically.
What is meant by pile cap?
Definition of pile cap 1 : a member passing over and connecting the heads of a row of piles. 2 : a block used to protect the head of a pile and to hold it in the leads while being driven in the ground.
How are pile caps measured?
Wrap a length of string around the top of your pile (where a piling cap would go), and mark the length of the string (or cut it). Measure the string and then divide that number (the circumference) by 3.14159 (pi) to get the diameter of your pile.
What is pile cropping?
Pile cropping also referred to as pile cutting or pile breaking is the process of removing or cropping concrete piles without damaging the embedded rebar. Traditionally concrete cropping was performed with a jackhammer, but this approach left operatives injured and the embedded steel being damaged.
Why do you crop piles?
The pile cropping process is required to remove all concrete to the specified level, while leaving reinforc- ing bars protruding to the designed length to allow adequate lap and/or anchorage into subsequent construction. The process must remove all damaged or poorly compacted concrete and laitance.
What is pile and pile cap?
Piles are used to carry the load of the structure deep into the ground, and pile caps form the solid foundation on which the piers are then built.
How do pile foundations work?
Piles are pushed into the ground to act as a steady support for structures built on top of them. Piles transfer the loads from structures to hard strata, rocks, or soil with high bearing capacity. The piles support the structure by remaining solidly placed in the soil.