Destructive Testing
A pile test is carried out on a single pile or a group of piles as required. In the case of pile groups, caps shall be provided such that the required conditions of actual use are fulfilled. Genera
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A pile test is carried out on a single pile or a group of piles as required. In the case of pile groups, caps shall be provided such that the required conditions of actual use are fulfilled. Generally, the load application and deflection measurement should be made at the pile top.
Vertical Load Test:
In this type of test, compression (vertically downward) load is applied to the pile top by means of a hydraulic jack against rolled steel joist or suitable load frame with adequate kentledge or reaction piles and the settlement is recorded by suitably positioned dial gauges/LVDT.
The loading should be applied in increments of about 20 percent of the estimated safe load for all static tests. All settlement criteria for permissible limits should be as per IS 2911 Part IV (latest revision shall be preferred)
Pullout Load test:
Pull out tests are where the hydraulic jack is made to rest on rolled steel joist(s) resting on two supports on the ground. The jack reacts against a frame attached to the top of the test pile in such a way that when the jack is operated, the pile gets pulled up and the reaction is transferred to the ground through the supports
Lateral load test:
This test is carried out by introducing a hydraulic jack with a gauge between two piles or pile groups under test or the reaction may be suitably obtained otherwise. If it is conducted by jack located between two piles or groups, the full load imposed by the jack shall be taken as the lateral resistance of each pile or group.
The corresponding Displacements shall be read by using two dial gauges or LVDTs.