ASTM D4945-12 PDF

1 Nov ASTM D May Standard Test Method for High-Strain Dynamic Testing of Deep Foundations. Historical Version. ASTM D Pile Driving Analyzer ® Given: 2L/c= 12 ms = T. L. = 75 ft . Broken Piles: β < • “End bearing” is unreliable in long term for broken piles. Conforms to. ASTM D • H-piles – no issue. • Pipe piles – use protectors. • Concrete piles – protectors or - sensors in indentations.

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Output contents can be customized and multiple output methods are supported; 5. Plans, specifications, or provisions or combinations thereof prepared by a qualified engineer may provide additional requirements and procedures as needed to satisfy the objectives of a particular test program. The CASE analysis of high strain bearing capacity detection of single pile and tensile stress and compressive stress d4945-21 of piling monitoring can be conducted; 2.

Reporting of test results in units other than SI shall not be regarded as nonconformance with this test method. Deep Foundations and Concrete piles. Original curve, velocity curve, force curve, force velocity curve, upper and asmt traveling wave curves, displacement velocity curve, energy curve, tensile stress curve and other display modes can be selected for asgm, processing and analysis; 4.

Users of this test method are cautioned that compliance with Practice D does not in itself assure reliable results. Amplification, translation, rotation, filtering x4945-12 other processing can be carried out for wave signals. Force and velocity are typically derived from measured strain and acceleration. If the Engineer does not have adequate previous experience for the specific site and pile type with the analysis of dynamic test data for tension capacity, then a static load test carried out according to Test Method D should be used to verify tension capacity estimates.

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Amplification, translation, rotation, filtering and other processing can be carried out for wave signals; 3. Historical Version s – view previous versions of standard. A qualified engineer should directly supervise the acquisition of field data and the interpretation of the test results so as to predict the actual performance and adequacy of deep foundations used in the constructed foundation.

Static capacity may also decrease or increase over time after the pile installation, and both static and dynamic tests represent the capacity at the time of the respective test.

It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

ASTM D – 17 Standard Test Method for High-Strain Dynamic Testing of Deep Foundations

China arm pit Satm soak pit China eec pit bike. The Engineer may analyze the acquired data using engineering principles and judgment to evaluate the integrity of the pile, the performance of the impact system, and the maximum compressive and tensile stresses occurring in the pile.

Not exactly what you want? Deep Foundations and Concrete piles Integrity Test. For a specific xstm statement, see Note 4. No other units of measurement are included in this standard.

CASE damping coefficients can be adjusted conveniently to obtain the calculation results of different JC values. In addition, they are representative of the significant digits that should generally be retained.

ASTM D +dynamic bored pile test | Nguyen Huu Phuoc –

Contact Supplier Start Order. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. These notes and footnotes excluding those in tables and figures shall not be considered as requirements of the standard.

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China pit rims China pit bikes China moto pit bikes. The CASE analysis of high strain bearing capacity detection of single pile and tensile stress and compressive stress analysis of piling monitoring can be conducted. Output contents can be customized and multiple output methods are supported. Correlations between measured ultimate axial static compression capacity and dynamic test estimates generally improve when using dynamic restrike tests that account for soil strength changes with time see 6.

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Original curve, velocity curve, force curve, force velocity curve, upper and lower traveling wave curves, displacement velocity curve, energy curve, tensile stress curve and other display modes can be selected for observation, processing and analysis. The 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.

Imperative sentences indicate mandatory provisions. However, high displacement driven piles may require greater movement to avoid under predicting the static capacity, and cast-in-place piles often require a larger cumulative permanent net penetration for a series of test blows to fully mobilize the capacity. Reliable results depend on many factors; Practice D provides a means of evaluating some of those factors. Link to Active This link will always route to the current Active version of the standard.

A permanent net penetration of as little as 2 mm per impact may indicate that sufficient movement has occurred during the impact event to fully mobilize the capacity.