During the progress of casting, temporary casings and trim pipes must be gradually withdrawn without damaging green coacre. Piles lmd te$ a bored cast-in-place pile must be made according to the following method. The pile head of the pile to be load tested shall be trimmed and finished with cement mortar to provide a smooth surface for uniform distribution of load to pile.
Pile loading is done with a hydraulic jack of sufficient capacity using a Kent ledge for reaction. The combined weight of the Kent shelf and jet beam should be approximately 2Ao/o greater than the maximum force to be applied. Dial. a gage calibrated to this 0.1mm is set at two reference points on the pile head .. to measure pile penetration under load.
Meter must be clamped to the reference frame securely mounted well clear of the ground. Average of the reading of the two-disc gauge .. should be taken to measure the penetration of the pile. All data from the load test must be recorded in a tabular form as attached, which must be signed by our representative and countersigned by the engineering representative.
During pile load testing, the production of other piles should be suspended to avoid the effect of vibration of the piling equipment. r. 6.
CHATTER 3
CONSTRUCTION MATERIALS OF PILLING WORI(S
- Materials Used in Construction
- Cement
- Aggregates
- Stone Chips
- Reinforcing Steel
- Water
- Concrete Mixing
- Equipment and Methods
- Working Methods
- Step 1: Centering the lavout
- Step 2: Boring operation
- Step 3: Borehole stabilization
- Step 1: Preparation of Rebar Case
- Placement of Rebar Case
- Step 6: Placement of Reinforcing Cage with Plastic Spacers Difficulties in placing the reinforcement may
- Step 8: Checking Stirrup
- Step 9: Construction checking
- CHAPTER 5
The stability of the product made it ideal for use in the creation of mortar and other binding materials. In normal structural concrete, the aggregate occupies approximately 70 to 75 percent of the volume of the hardened mass. Concrete is dosed in a stationary plant and then hauled to the construction site in one of three.
There is one . centrifugal pump is used as . essential part of the construction of east-in-situ pile. The use of the mixer is very important in cast in situ .. piling work because the required .. concrete volume and quality is high. v) Bucket:. The bucket is made of metal. device for replacing concrete inside the .. hopper. It has a gate at the bottom and is controlled by a . rope.
When the bucket is jerked by .. the rocking machine just on the .. funnel, the gate is opened through a predetermined funnel. vil Funnel:. The funnel is a . rectangular or a circular device used for replacing .. concrete at the desired depth .. through the trimmi pipe. It receives .. the concrete from the bucket and . by the up and down forces. concrete comes out at the end mouth of the trim pipe. person and the concrete replaced on the. This is mainly required when the pipe is removed from its joint and a new one is fitted to make it longer during drilling and concreting. viii).
Then, according to the lavout plan, the locatrons of the center of the carefi:il1 pillars are selected. So that the longitudinal bars are cut as per construction drawing measurement and wired and properly electrode welded to 29. Preferably for two places for draw not one place and head is preferred for short extension of armature case. .
When the height of the rebar is less than the height of the stand, the cabinet must be placed by holding the top stirrup upside down. If the rebar casing is placed by an external force, there is a possibility of the rebar casing falling or twisting inside the borehole. Sometimes the overall height of the rebar is much higher than the stand. In the particular case, we must make two rebar cases, and after placing one, the second box must be placed inside it, but never place it obliquely and forcefully, then there is a possibility that the side of the case will touch side of .. borehole and loose soil will enter or it may be misled from its actual direction. But sorretinres it is not preferred to break inside at the blow of .. rinrri pioe rvhile casting in case of small diametral pile.
Most often, the piles are connected to the pile cap, with the base of the cap below the existing construction grade. This below-grade boundary is usually constructed by excavating for the pile cap, cutting off the top of the hardened pile to the required height, and cutting the rebar as necessary.
ESTIMATION OF' CAST.IN.SITU PILE FOUNDATION
Estimation Criteria for Cast-in-Situ Pile
- Sylhet Sand
- Stone Chipsr
- Reinforcement
Let the required volume of concrete be: 123.9 cft per pillar As the ratio of concrete is given in the specification: 1:1.5:3. Rings: there are several circular rings used inside the stack to hold the armor case.
The Summery of Estimated Materials for assume 100 nos. of Pile
CI{APTER 6
PROBLEMS WITH THEIR SOLUTION
Problems
Solutions against the Problems
To keep a combination of them, we guided them carefully and while they stood, it was counted by another person as the materials flowed into the mixing drum. Afterwards, the old septic tank was found in one borehole and the minimum head was not found there, so that in order to stabilize the head of the borehole, a head of 1.5 m was artificially generated. If an arable farm is a growing business, they do not provide the safety such as first aid kit, fire safety box, gumboot and helmet, etc.
Although ensuring construction site safety is not expensive, it is not implemented.
CONCLUSIONS AND RECOMMENDATION
Conclusion
Recommendetions
