ASTM D1143/D1143M-07e1
(Test Method)Standard Test Methods for Deep Foundations Under Static Axial Compressive Load
Standard Test Methods for Deep Foundations Under Static Axial Compressive Load
SIGNIFICANCE AND USE
Field tests provide the most reliable relationship between the axial load applied to a deep foundation and the resulting axial movement. Test results may also provide information used to assess the distribution of side shear resistance along the pile shaft, the amount of end bearing developed at the pile toe, and the long-term load-deflection behavior. A foundation designer may evaluate the test results to determine if, after applying an appropriate factor of safety, the pile or pile group has an ultimate static capacity and a deflection at service load satisfactory to support a specific foundation. When performed as part of a multiple-pile test program, the designer may also use the results to assess the viability of different piling types and the variability of the test site.
If feasible, without exceeding the safe structural load on the pile(s) or pile cap, the maximum load applied should reach a failure load from which the Engineer may determine the ultimate axial static compressive load capacity of the pile(s). Tests that achieve a failure load may help the designer improve the efficiency of the foundation by reducing the piling length, quantity, or size.
If deemed impractical to apply axial test loads to an inclined pile, the Engineer may elect to use axial test results from a nearby vertical pile to evaluate the axial capacity of the inclined pile.
Note 1—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. Agencies that meet the criteria of Practice D 3740 are generally considered capable of competent and objective testing/sampling/ inspection/etc. Users of this test method are cautioned that compliance with Practice D 3740 does not in itself assure reliable results. Reliable results depend on many factors; Practice D 3740 provides a means of evaluating some of those factors.
SCOPE
1.1 The test methods described in this standard measure the axial deflection of a vertical or inclined deep foundation when loaded in static axial compression. These methods apply to all deep foundations, referred to herein as piles, that function in a manner similar to driven piles or castinplace piles, regardless of their method of installation, and may be used for testing single piles or pile groups. The test results may not represent the long-term performance of a deep foundation.
1.2 This standard provides minimum requirements for testing deep foundations under static axial compressive load. Plans, specifications, and/or provisions prepared by a qualified engineer may provide additional requirements and procedures as needed to satisfy the objectives of a particular test program. The engineer in responsible charge of the foundation design, referred to herein as the Engineer, shall approve any deviations, deletions, or additions to the requirements of this standard.
1.3 This standard allows the following test procedures: Procedure AQuick Test Procedure BMaintained Test (optional) Procedure CLoading in Excess of Maintained Test (optional) Procedure DConstant Time Interval Test (optional) Procedure EConstant Rate of Penetration Test (optional) Procedure FConstant Movement Increment Test (optional) Procedure GCyclic Loading Test (optional)
1.4 Apparatus and procedures herein designated “optional” may produce different test results and may be used only when approved by the Engineer. The word “shall” indicates a mandatory provision, and the word “should” indicates a recommended or advisory provision. Imperative sentences indicate mandatory provisions.
1.5 A qualified geotechnical engineer should interpret the test results obtained from the procedures of this standard so as to predict the actual performance and adequacy of piles used in the constructed foundation. See Appendix X1 for comments regarding some of the factors influencing the interpretation of test result...
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Designation: D1143/D1143M − 07
StandardTest Methods for
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Deep Foundations Under Static Axial Compressive Load
This standard is issued under the fixed designation D1143/D1143M; the number immediately following the designation indicates the
year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last
reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
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´ NOTE—Section references were editorially corrected in Sections 8.1.4, 8.1.8, and Note 12 in January 2009.
1. Scope* recommended or advisory provision. Imperative sentences
indicate mandatory provisions.
1.1 The test methods described in this standard measure the
1.5 A qualified geotechnical engineer should interpret the
axial deflection of a vertical or inclined deep foundation when
test results obtained from the procedures of this standard so as
loaded in static axial compression. These methods apply to all
to predict the actual performance and adequacy of piles used in
deep foundations, referred to herein as piles, that function in a
the constructed foundation. See Appendix X1 for comments
manner similar to driven piles or cast-in-place piles, regardless
regarding some of the factors influencing the interpretation of
of their method of installation, and may be used for testing
test results.
single piles or pile groups. The test results may not represent
the long-term performance of a deep foundation.
1.6 A qualified engineer shall design and approve all load-
ing apparatus, loaded members, support frames, and test
1.2 This standard provides minimum requirements for test-
procedures. The text of this standard references notes and
ing deep foundations under static axial compressive load.
footnotes which provide explanatory material.These notes and
Plans, specifications, and/or provisions prepared by a qualified
footnotes (excluding those in tables and figures) shall not be
engineer may provide additional requirements and procedures
considered as requirements of the standard. This standard also
as needed to satisfy the objectives of a particular test program.
includes illustrations and appendices intended only for ex-
The engineer in responsible charge of the foundation design,
planatory or advisory use.
referred to herein as the Engineer, shall approve any
deviations, deletions, or additions to the requirements of this
1.7 The values stated in either SI units or inch-pound units
standard.
are to be regarded separately as standard. The values stated in
each system may not be exact equivalents; therefore, each
1.3 This standard allows the following test procedures:
system shall be used independently of the other. Combining
Procedure A Quick Test 8.1.2
values from the two systems may result in non-conformance
Procedure B Maintained Test (optional) 8.1.3
Procedure C Loading in Excess of Maintained Test (optional) 8.1.4
with the standard.
Procedure D Constant Time Interval Test (optional) 8.1.5
1.8 The gravitational system of inch-pound units is used
Procedure E Constant Rate of Penetration Test (optional) 8.1.6
Procedure F Constant Movement Increment Test (optional) 8.1.7
when dealing with inch-pound units. In this system, the pound
Procedure G Cyclic Loading Test (optional) 8.1.8
(lbf) represents a unit of force (weight), while the unit for mass
1.4 Apparatus and procedures herein designated “optional”
isslugs.Therationalizedslugunitisnotgiven,unlessdynamic
may produce different test results and may be used only when
(F=ma) calculations are involved.
approved by the Engineer. The word “shall” indicates a
1.9 All observed and calculated values shall conform to the
mandatory provision, and the word “should” indicates a
guidelines for significant digits and rounding established in
Practice D6026.
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1.10 The method used to specify how data are collected,
ThistestmethodisunderthejurisdictionofASTMCommitteeD18onSoiland
RockandisthedirectresponsibilityofSubcommitteeD18.11onDeepFoundations.
calculated, or recorded in this standard is not directly related to
Current edition approved Feb. 1, 2007. Published April 2007. Originally
theaccuracytowhichthedatacanbeappliedindesignorother
approved in 1950. Discontinued in August 1995 and reinstated in 2007 as
´1 uses, or both. How one applies the results obtained using this
D1143–07. Last previous edition approved in 1994 as D1143 – 81(1994) . DOI:
10.1520/D1143_D1143M-07E01. standard is beyond its scope.
*A Summary of Changes section appears at the end of this standard
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D1143/D1143M − 07
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