ASTM D4945 PDF

Dynamic Pile Testing. ASTM D Pile Driving Analyzer ®. Garland Likins, Pile Dynamics, Inc. PDCA Professor’s Institute. Garland Likins, Pile Dynamics. ASTM D Standard Test Method for High-Strain Dynamic Testing of Deep Foundations. standard by ASTM International, 11/01/ View all product. 1 Jan Buy ASTM D TEST METHOD FOR HIGH-STRAIN DYNAMIC TESTING OF DEEP FOUNDATIONS from SAI Global.

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Active view current version of standard. Link to Active This link will always route to the current Active version of the standard. A qualified engineer shall approve the apparatus used for applying the impact force, driving appurtenances, test rigging, hoist equipment, support frames, templates, and ashm procedures.

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Test Method D provides a direct and more reliable measurement of static tension capacity. Force and velocity are typically derived from measured strain and acceleration.

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It is beyond the scope of this standard to consider significant digits used in analysis methods for engineering design. The Engineer should determine how the size and shape of the pile, and the properties of the soil or rock beneath and adjacent to the pile, affect the amount of movement required to fully mobilize the static capacity. A permanent net penetration of as little as 2 mm per impact may indicate that sufficient satm has occurred during the impact event to fully mobilize the capacity.

ASTM D – 00 Standard Test Method for High-Strain Dynamic Testing of Piles

These notes and footnotes excluding those in tables and figures shall not be considered as requirements of the standard. Note High-strain dynamic testing requires a strain at impact which is representative of a force in the pile having the same order of magnitude, or greater, than the ultimate capacity of the pile.

Factors that may affect the axial static capacity estimated from dynamic tests include, but are not limited to the:. In addition, they are representative of the significant digits that should astj be retained. 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.

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

For a specific precautionary statement, see Note 4. 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. Subscription pricing is determined by: Factors that may affect the axial static capacity estimated from dynamic tests include, but are not limited to the: 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.

A qualified engineer shall approve the apparatus used for applying the impact force, driving appurtenances, test rigging, hoist equipment, support frames, templates, and test procedures.

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.

No other units of measurement are included in this standard.

This test method is applicable to deep foundation units that function in a manner similar to foundation piles, regardless of their method of satm provided that they are receptive to high strain impact testing.

You may delete a document from your Alert Profile at any time. If the document is revised or amended, you will be notified by email. In addition, they are representative of the significant digits that should generally be retained.

The analysis of a dynamic test will under predict the ultimate axial static compression capacity if the pile movement during the impact event is too small. 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.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. This standard is not included in any packages.

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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.

These notes and footnotes excluding those in tables and figures shall not be considered as requirements of the standard. 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.

This standard is also available to be included in Standards Subscriptions. Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards. 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.

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Imperative sentences indicate mandatory provisions. Add to Alert PDF. 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 xstm the constructed foundation.

For a specific precautionary statement, see Note 5.

Reliable results depend on many factors; Practice D provides a means of evaluating some of those factors. 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.

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. Users of this test method are cautioned that compliance with Practice D does not in itself assure reliable results. For a specific precautionary statement, see Note 4.