Methodology For Pile Integrity Test (PIT)

WORK METHOD STATEMENT (WMS-23) FOR PILE INTEGRITY TEST

1. SCOPE:

This comprehensive document delineates the precise method for conducting a Pile Integrity Test aimed at assessing the quality of a pile. While it may not unveil every imperfection, this test offers critical insights into factors such as continuity, defects (e.g., cracks, necking), soil intrusion, alterations in cross-section, and approximate pile lengths.

2. REFERENCES:

This procedure adheres to the Standard Operating Procedure for Pile Integrity Tests as stipulated by the designated Third Party Agency.

3. MANPOWER & EQUIPMENT DETAILS OF PIT :

The successful execution of this test requires the following resources:

  • Skilled Labor: As per necessity
  • Engineer/Technician: As required
  • Pile Integrity Tester

4. PROCEDURES PILE INTEGRITY TEST (PIT) :

a. Preparation: Prior to commencing the test, the pile must undergo trimming to achieve the cutoff level or sound concrete level. Any loose concrete, debris, and laitance must be meticulously removed.

b. Site Conditions: Ensure the immediate vicinity of the pile is devoid of water to prevent interference during testing.

c. Testing Timing: For bored cast in situ piles, testing should commence no earlier than 14 days post-casting.

d. Initiation of Test: Begin the test by lightly tapping the prepared surface of the pile with a hard rubber hammer.

e. Shock Propagation: The induced shock will propagate downwards through the pile, subsequently reflecting back from the toe of the pile.

f. Data Acquisition: Employ a suitable transducer/accelerometer to capture the reflected shock waves, storing the data onto a computer disk for subsequent analysis.

g. Primary Reflections: The primary shock wave, traversing the length of the pile, gets reflected from the toe due to a density change between the concrete and the sub-strata.

h. Identification of Imperfections: Any imperfections or discontinuities within the pile’s length will manifest in secondary reflections during the return signal.

i. Signal Analysis: Utilize meticulous signal analysis techniques to discern the conditions of the pile toe and ascertain the pile length accurately.

j. Repeatability Assurance: It’s advisable to conduct multiple recordings of signals until signal repeatability is achieved, ensuring data accuracy and reliability.

k. Data Processing and Reporting: Upon completion of on-site integrity testing, process the recorded signals stored in the disk meticulously, preparing comprehensive reports in accordance with established protocols.

5). INSPECTION & QUALITY CONTROL:

In accordance with our commitment to meticulous inspection and stringent quality control, comprehensive reports will be meticulously prepared based on detailed observations for subsequent submission to the Inspection Engineer (IE). The interpretation of tests and results will be entrusted to experienced professionals with a profound understanding of these specific types of tests, ensuring accuracy and reliability in our assessments.

6). SAFETY:

Our paramount concern for safety dictates that all necessary safety arrangements will be diligently implemented in strict accordance with the safety plan and established procedures. We prioritize the well-being of all personnel involved in the project, adhering to industry standards and best practices to mitigate risks and ensure a secure working environment.

7). CONCLUSION:

The continuation of the Pile Integrity Test will proceed in adherence to the aforementioned procedures, reaffirming our commitment to methodical and systematic processes in achieving our project objectives. We remain dedicated to upholding the highest standards of quality and safety throughout every phase of the project’s execution.

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