The pile head of punching cast-in-place pile is 500mm higher than the drawing. The design, structure, construction, quality and acceptance of punched cast-in-place piles are all included in JGJ94-2008 Technical Specification for Building Pile Foundation.

Bored cast-in-place pile needs to chisel the pile head. Before steel binding, the floating part of the pile head or the damaged part of the hammering surface of the cast-in-place pile must be removed, and the length of the pile buried in the pile cap should meet the design requirements. Steel pipe piles should also be welded with the pile top connector.

1, because the pile head is cut to expose the reinforcement in the pile, so as to anchor with the pile cap.

2. The height of the pile head is determined by the anchorage value of the steel bar in the pile head (the concrete label of the pile cap, the engineering seismic grade, the specification of the steel bar and the description in the detailed drawings of the construction drawing should be considered).

If there is no explanation, it can be considered as before.