How to configure the bored pile conduit, and the length of the bottom pipe of the bored pile conduit

1. Measure the hole depth. 2. Set up a shelf. 3. Assemble the conduit and make it sealed to prevent water from breaking the pile.

4. Make the bottom of the catheter meters away from the bottom of the hole. 5.Check the slump of the concrete.

Make it compliant. 6. Select the back cover measures and start perfusion.

The length should not be less than 4m.

Because of bored piles.

Generally, it is mostly underwater concrete.

The code stipulates that the depth of concrete buried at the bottom of the conduit should not be less than 1 meter and not more than 6 meters, and the length of the remaining sections of the conduit is about one meter. If the length of the bottom pipe is less than 4 meters, then the bottom pipe may be pulled out of the concrete when the pipe is dismantled, resulting in pile breakage, so there is a basis for requiring that the length of the bottom pipe of the conduit should not be less than 4 meters.

Bored pilesPile testConstruction Requirements:

1.Before the surveyor places the pile position and buries the casing, the cross line should be set in four directions with steel bars around the outer side of the casing, and the intersection of the two lines is aligned with the center of the pile, not lower than the top of the casing, so as to facilitate the calibration of the pile center after the embedding of the casing.

2.Before drilling, the pile position must be re-checked, and the deviation between the center of the casing and the center of the pile position shall not be greater than 50mm. The diameter of the casing should be greater than the pile diameter of 100mm, and 1-2 slurry outlets should be opened in the upper part. The embedding depth of the casing should not be less than 1m.

3.The burial of the casing must be carried out under the control of the surveyor, and the outside of the casing is backfilled with clay to ensure its verticality.

To prevent mud loss and displacement, the casing should be 10cm higher than the ground.

4.After the drilling rig is installed, the base and the top should be stable, and there should be no displacement and settlement during the drilling rig, otherwise it should be dealt with in time.

5.After the above work is done, the elevation of the casing should be measured, and the "drilling process quality inspection form" should be filled in, and the on-site quality inspector should be filled.

The drill can only be started after the supervision and inspection are qualified.

Summary. The length of the lifting conduit is wrong, mainly because the length of the lifting conduit is greater than or close to the pile amount of a batch of concrete of the mixer, and the reasonable lifting length should be equal to the area of the concrete (cube) of the mixer except the diffusion coefficient) and then multiplied by the guarantee pipe in the poured concrete pile 300 400 cm) is equal to the length of the lifting pipe. In this way, it is possible to ensure that the bored column will not have pile breakage and delamination and segregation.

How to fill in the construction record of the hole pile, the depth of the conduit inserted into the concrete and the length of the conduit lifting?

Hello, I have seen your question, and I am sorting out the answer, please wait a while The length of the lifting conduit is wrong, mainly because the length of the lifting conduit is greater than the amount of piles formed by a batch of concrete in the closed gear or close to the mixer, and the reasonable lifting length should be equal to the area of the concrete (cube) in addition to the diffusion coefficient of the agitator and then multiplied by the guarantee pipe in the poured mixed and closed concrete pile 300 400 cm) is equal to the length of the lifting pipe. In this way, it is possible to ensure that the bored column will not have pile breakage and delamination and segregation.