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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ASTM D 5882-16 Compliance Statement
The method 58882 generally not suitable for testing steel sheet, H-section or un? This data assists evaluation of pile integrity and pile physical dimensions that is, cross-sectional area, lengthcontinuity, and consistency of the pile material.
The apparatus shall balance the velocity signal to zero between impact events. The data are evaluated usually in the frequency domain. Users of this test method are cautioned that aatm with Practice D does not in itself assure reliable results.
The accelerometer s should be placed at or near the pile head and shall have their sensitive axis parallel with the pile axis.
The hammer may have a force adtm cell between the tip and hammer body. The records from the individual impacts or the averaged record, or both, should then be stored see 5.
If the pile head is not accessible, as when already integral with the structure, the sensor s may be attached to the wstm of the pile shaft. These notes and footnotes excluding those in tables and figures shall not be considered as requirements of the standard. Additional locations should be considered for piles with diameters greater than mm. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?
Often, this method gives sufficient information for integrity evaluation. Users of this test method are cautioned that compliance with Practice D does not in itself assure reliable results.
Asgm apparatus shall allow for a permanent graphical output of the records. ASTM D pile integrity testing. Average the suitable records of several impacts and apply necessary ampli?
Some cases involving integral superstructures, may require use of two motion measuring devices attached at two different locations along the pile shaft.
Users of this standard are expressly asm that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. Alternatively, velocity or displacement transducers may be used to obtain velocity data, provided they are equivalent in performance to the speci? This standard does not purport to address all of the safety concerns, if any, associated with its use.
Such further use and interpretation of the data is a matter of engineering judgment and experience. The force output shall be balanced to zero between impact events. Comparison of results from several piles from the site with similar construction is recommended to assess the typical response with the same ampli? No other units of measurement are included in this standard. The data are evaluated usually in the frequency domain.
The low strain integrity evaluation should not be used as the sole factor in establishing pile acceptance or rejection. How one applies the results obtained using this standard is beyond its scope. Historical Version s – view previous versions of standard Translated Version s: 58882 number in parentheses indicates the year of last reapproval. Individual reprints single or multiple copies of zstm standard may be obtained by contacting ASTM at the above address or at phonefax sstm, or service astm.
ASTM D – 16 Standard Test Method for Low Strain Impact Integrity Testing of Deep Foundations
aetm A hammer with a very hard plastic tip can induce a short input force pulse without causing local pile damage. This test method is applicable to long structural elements that function in a manner similar to foundation piles, regardless of their method of installation provided that they are receptive to low strain impact testing. Other useful information to consider and compare with results of this test includes low strain integrity test results of similar piles at the same site, concrete cylinder or core strength test results, automated monitoring data on equipment placing the concrete when augered piles are used, or information obtained from crosshole sonic logging Test Method D or thermal integrity profiling Test Methods D if available.
The apparatus should be capable of averaging data of several blows to reinforce the repetitive information from soil and pile effects while reducing random noise effects. The impact should be applied axially to the pile normally on the asm head.
Alternately, the pile head force can be measured as well.