ASTM D 5882 PDF
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 apparatus shall balance the velocity signal to zero between impact events. If damage is suspected during use, recalibrate or replace the accelerometer.
ASTM D5882 – 16
Originally published as D — A superscript epsilon e indicates an editorial change since the last revision or reapproval. If records are not repeatable, do not use the data. The apparatus shall allow for a permanent graphical output of the records. The data are evaluated usually in the frequency domain. 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.
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. Reliable results depend on many factors; Practice D provides a means of evaluating some of those factors.
The apparatus shall be capable of transferring all data to a permanent storage medium. When digitizing, the sample frequency, therefore, shall be at least 30 Hz each for the motion sensor and the optional instrumented hammer, if used. This apparatus may receive the signals after they have been processed by the apparatus for reducing the data. Attached to every digitized event should be identifying information names and descriptions, signal processing enhancement parameters, and date and time stamps.
Some cases involving integral superstructures, may require use of two motion measuring devices attached at two astk locations along the pile shaft. How one applies the results obtained using this standard is beyond its scope. This test method will not provide information regarding the pile bearing capacity. This standard may involve hazardous materials, operations, and equipment. 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 wstm piles are used, or information obtained from crosshole sonic logging Test Method D or thermal integrity profiling Test Methods D if available.
These notes and footnotes excluding those in tables and figures shall not be considered as requirements of the standard. Often, this method gives sufficient information for integrity evaluation.
The motion during the impact event is normalized usually and is associated with the pile head. Accelerometers shall be linear to at least 50 g. This standard does not purport to asrm all of the safety concerns, if any, associated with its use.
Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. This test method is applicable to long structural elements that function in f 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.
ASTM D 5882-16 Compliance Statement
ASTM D pile integrity testing. Alternatively, velocity or displacement transducers may astj used to obtain velocity data, provided they are equivalent in performance to the speci? In the time domain analysis PEMbase the pile integrity evaluation on relative increases and decreases of velocity after the initial impact pulse Fig. Attach the appropriate motion sensor see 5. Adjust the apparatus to reproduce a signal having a range of duration between 2 ms and 30 ms.
This data assists evaluation of pile integrity and pile physical dimensions that is, cross-sectional area, lengthcontinuity, and consistency of the pile material.
ASTM D – 07 Standard Test Method for Low Strain Impact Integrity Testing of Deep Foundations
Record the number of impacts for a speci? The combination of force and velocity may give additional information regarding the pile integrity near the pile head. Alternately, the pile head force can be measured adtm well.
Additional locations should be considered for piles with diameters greater than mm. A hammer with a very hard plastic tip can induce a short input force pulse without causing local pile damage. The results of the analysis may include a quantitative assessment of pile integrity.