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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Attach the motion sensor? If records are not repeatable, do not use the data. 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.
Ensure that the pile head surface is accessible, above water, and clean of loose concrete, soil or other foreign materials resulting from construction. 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.
These notes and footnotes excluding those in tables and asm shall not be considered as requirements of the standard. Often, this method gives sufficient information for integrity evaluation. Use integrity evaluation from low strain tests together with other information, including pile installation procedures and zstm, soil information, loading requirements, etc.
In some cases, it may be difficult to distinguish the soil response from the pile response. Originally published as D — The apparatus shall display the digitized data of the impact event or upon recall by the user of the digitally stored event. How one applies the results obtained using this standard is beyond its scope. Historical Version s – view previous versions of standard. If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.
In the time astj analysis PEMbase the pile integrity evaluation on relative increases and decreases of velocity after the initial impact pulse Fig. The low strain integrity evaluation should not be used as the sole ast, in establishing pile acceptance or rejection. Active view current version of standard. Attach the ast, motion astj see 5. The time domain record is then evaluated for pile integrity.
ASTM D 5882-16 Compliance Statement
Some cases involving integral superstructures, may require use of two motion measuring devices attached at two different locations along the pile shaft. The apparatus shall include a graphic display of velocity and force optionaland a data storage capability for retrieving records for further analysis. Such further use aastm interpretation of the data is a matter of engineering judgment and experience. The low strain impact should be applied to ashm pile head within a distance of mm from the motion sensor.
A number in parentheses indicates the year of last reapproval.
The method works best on solid concrete sections, and has limited application to unfilled steel pipe piles, H piles, or steel sheet piles. Position the apparatus for applying the impact force so that the impact is applied axially with the pile and at a distance no larger than mm from the accelerometer. If the pile head is not accessible, as when already integral with the structure, the sensor s may be attached to the side of the pile shaft. How one applies the results obtained using 58822 standard is beyond its scope.
Users of this test method are cautioned that compliance with Practice D does not in itself assure reliable results. This test method is applicable to long structural elements that function in a manner similar to any deep foundation units such as sstm piles, augeured piles, or drilled shaftsregardless of their method of installation provided that they are receptive to low strain impact testing.
Alternatively, the hammer may have an accelerometer attached and the measured acceleration may be converted to force using the hammer mass.
ASTM D – 07 Standard Test Method for Low Strain Impact Integrity Testing of Deep Foundations
Precision and Blas 8. Comparison of results from several piles from the site with similar construction is recommended to assess the typical response with the same ampli? Last previous edition D — Integrity evaluation of a astn section below a crack that crosses the entire pile cross-sectional area or a manufactured mechanical joint is not normally possible since the impact wave likely will re?
Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. This standard does not purport to address all of the safety concerns, if any, associated with its use.
The records from the individual impacts or the averaged record, or both, should then be stored see 5. Axtm superscript epsilon e indicates an editorial change since the last revision or reapproval.
Current edition approved November 10, No other units of measurement are included in this 55882. Reliable results depend on many factors; Practice D provides a means of evaluating some of those factors. The combination 55882 force and velocity may give additional information regarding the pile integrity near the pile head.
For piles having minor impedance variations, the engineer should use judgement as to the acceptability of these piles considering other factors such as load redistribution to adjacent piles, load transfer to the soil above the defect, applied safety factors, and structural load requirements.
Ensure that the apparatus for recording, reducing, and displaying data is capable of determining the measurement device overload threshold. For both methods, data may be evaluated in both time domain and frequency domain. Set up the apparatus for recording, reducing, and displaying data so that it is operational and the force and velocity signals are zeroed. This test method will not asstm information regarding the pile bearing capacity. Accelerometers shall be linear to at least 50 g.
ASTM D – 16 – Standard Test Method for Low Strain Impact Integrity Testing of Deep Foundations
Asym useful information to consider and compare with results of this test includes low strain integrity test results of similar piles at dd 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 must have? Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.
The apparatus shall allow for a permanent graphical output of the records. Take, record, and display a series of velocity and force optional measurements.
ASTM D5882 – 16
The hammer may have a force load cell between the tip and hammer body. Analog data acquisition systems are speci? The apparatus shall be able to apply increasing intensity ampli?