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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This test method is applicable to long structural elements that function in a manner similar to foundation piles, regardless of x method of installation provided that they are receptive to low strain impact testing. 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.
ASTM D – 16 Standard Test Method for Low Strain Impact Integrity Testing of Deep Foundations
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. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. 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.
Set up the apparatus for recording, reducing, and displaying data so that it is operational and the force and velocity signals are zeroed. The apparatus shall be able to apply increasing xstm ampli?
ASTM D – 07 Standard Test Method for Low Strain Impact Integrity Testing of Deep Foundations
Historical Version s – view previous versions of standard. Visual interpretation may be qualitative and possibly relative to other tested piles and a matter of proper engineering judgment. This test method will not provide information regarding the pile bearing capacity. Other useful information satm consider and compare with aztm 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.
It is generally helpful to consider the soil profile, construction method and site records when evaluating data obtained by this method. Adjust the apparatus to reproduce a signal having a range of duration between 2 ms and aatm ms. The motion during the impact event is normalized usually and is associated with the pile head. Originally published as D — Link to Active This link will always route to the current Active version of the standard. For piles with diameters larger than mm, attach the accelerometer at a minimum of three locations so that an integrity evaluation near the pile head may be made for each localized section of pile.
The apparatus shall display the digitized data of the impact event or upon recall by the user of the digitally stored event. 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.
The data are evaluated usually in the frequency domain. 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. Users of this test method are cautioned that 55882 with Practice D does not in itself assure reliable results.
Attached to every digitized event should be identifying information names and descriptions, signal processing enhancement parameters, and date and time stamps. The displayed data should include the velocity and force optional records with time, an indication of the pile length and assumed material wave speed and a representation of the shape and magnitude of the ampli?
Active view current version of standard.
Use integrity evaluation from low strain tests together with other information, including pile installation procedures and observations, soil information, loading requirements, etc. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
Current edition approved November 10, The results of the analysis may include a quantitative assessment of pile integrity. 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.
Ensure that the pile head surface is accessible, above water, and clean of loose concrete, soil or other foreign materials resulting from construction. The impact should be applied axially to the pile normally on 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.
Analog data acquisition systems are speci? The apparatus shall be capable of transferring all data to a permanent storage medium.
ASTM D5882 – 16
Such further use and interpretation of the data is a matter of engineering judgment and experience. A superscript epsilon e indicates an editorial change since the last revision or reapproval.
The uniformity and accuracy of the digital sampling frequency is critical; the clock jitter sampling frequency accuracy must be within 0.
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.