ASTM D 5882 PDF

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Buy ASTM D R TEST METHOD FOR LOW STRAIN IMPACT INTEGRITY TESTING OF DEEP FOUNDATIONS from SAI. ASTM D compliance statement of PET – Pile echo tester. Standard Test Method for Low-Strain Impact Integrity. Testing of Deep Foundations (ASTM D ), and. Standard Test Method for High-Strain Dynamic.

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The data are evaluated usually in the frequency domain. Historical Version s – view previous versions of standard.

ASTM D 5882-16 Compliance Statement

Alternatively, the hammer may have an accelerometer attached and the measured acceleration may be converted to force using the hammer mass. In the time domain analysis PEMbase the pile asttm evaluation on relative increases and decreases of velocity after the initial impact pulse Fig.

No other units of measurement are included in this standard. Comparison of results from several piles from the site with similar construction is recommended to assess the typical response with the same ampli? The low strain impact should be applied to the pile 58882 within a distance of mm from the motion sensor.

Accelerometers shall be linear to at least 50 g. Sstm records from the individual impacts or the averaged record, or both, should then satm stored see 5. Note 1 he quality of the result produced by this test method is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. It is generally helpful to consider the soil profile, construction method and site records when evaluating data obtained by this method.

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Piles that are rigidly connected to a footing or superstructure are sometimes tested successfully although the evaluation often may be more difficult and may be inconclusive.

The low strain integrity evaluation should not be used as the sole factor in establishing pile acceptance or rejection. If the pile head is contaminated, remove a sufficient pile section to reach sound concrete.

Do not use the records of impacts that cause the measurement device to overload. Record the number of impacts for a speci? When digitizing, the sample frequency, therefore, shall be at least 30 Hz each for the motion sensor and the optional 58882 hammer, if used. The data are evaluated usually in the frequency domain. Consistent records are the result of uniform impacts on sound concrete, transducer systems that are properly functioning, motion sensors that are?

Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM Headquarters.

ASTM D5882 – 16

A contingency plan should be formed that allows the engineer to possibly perform further tests or dictate pile repair or replacement prior to the integrity testing, in case a serious defect is indicated. This test method will not provide information regarding the pile bearing capacity. A superscript epsilon e indicates an editorial change since the last revision or reapproval.

NOTE 1—It is generally recommended that all components of the apparatus for obtaining dynamic measurements and the apparatus for recording, reducing, and displaying data be calibrated if any signs of system malfunctions become apparent. Active view current version of standard. These data assist evaluation of the pile cross-sectional area and length, the pile integrity and continuity, as well as consistency of the pile material, although evaluation is approximate.

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ASTM D – 16 Standard Test Method for Low Strain Impact Integrity Testing of Deep Foundations

Adjust the apparatus to reproduce a signal having a range of duration between 2 ms and 30 ms. Precision and Blas 8. The time domain record is then evaluated for pile integrity. The displayed data should include the velocity and force optional records with time, an indication of the atm length and assumed material wave speed and a representation of the shape and magnitude of the ampli?

The hammer may have a force load cell 5828 the tip and hammer body. This test method is applicable to long structural elements that function in a manner similar to any deep foundation units such as driven piles, augeured piles, or drilled shaftsregardless of their method of installation provided that they are receptive to low strain impact testing.

Users of this test method are cautioned that compliance with Practice D does not in itself assure asm results.

ASTM D[1][1] pile integrity testing. If damage is suspected during use, recalibrate or replace wstm accelerometer. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Visual interpretation may be qualitative and possibly relative to other tested piles and a matter of proper engineering judgment.