Pile Load Testing

Pile load Test are generally performed either to prove that piles are capable of sustaining the design load or to gain more detailed information that will enable a more efficient design.

PURPOSE OF PILE LOAD TESTING:

• Confirmation of pile driving depth
• Confirmation of Vertical bearing capacity of pile.
• Confirmation of lateral load capacity of the pile.
• Establishment of driving criteria
• Confirmation of Pull Out load capacity of pile.

TYPES OF TEST

There are 2 types of test for each type of loading namely the Initial Test

and the Routine Test.

The number of Initial Test may be one or more depending upon the number of

piles required and the importance of structure.The Initial Test shall be

carried out min.2 or 2.5 times the estimated safe load and up to the pile

destruction.Piles used for initial testing are loaded to failure or at least

twice the design load.Such piles are generally not used in the final construction.

The number of Routine Test may be 1.5% of the total number of piles required.

The number of test may be increased to 2% in a particular case depending upon

the nature, type of structure and strata conditions.The Routine Test shall

be carried out to 1.5 times the estimated safe load.During this test pile should

be loaded upto one and half times the working(design) load and the maximum settlement

of the test should not exceed 12mm.These piles may be used in the final construction.

 PILE LOADING TEST

Load Test shall be performed when concrete has reached its required strength i.e.

28 days strength.There are mainly 3 types of loading test carried out on pile.

• Vertical/Axial Load Test (Compression)
• Lateral Load Test
• Pull Out Test

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