What are the preparations for the piling site?
1, the pile position determination: according to the project provided by the construction unit and the pile axis location map of pile location, pile location must be accurate, and in the pile position by a soldering iron drilling, hole depth is 15~20cm, filled with lime, prevent in the process of driving the wrong pile.2. Pile up(1) pile stacking shall be determined by pile driving route and pile driving sequence(2) the site shall be level and level with three passes and one leveling. Remove obstacles in the ground, underground and air in the range of the moving of the pile driver. The wooden posts and the pile rings shall be of the same position, except for the contact between the pile and the pile, and nothing else shall be in contact with the pile so as to prevent cracks in the pile.(3) the strength of reinforced concrete precast piles must be up to 100% before they can be transported and piled3, the selection of pile machineAccording to the design of single pile bearing capacity and pile length, this project intends to use hammer weight 2.5t track type diesel pile driver.