ASTM D5780-18
(Test Method)Standard Test Methods for Individual Piles in Permafrost Under Static Axial Compressive Load
Standard Test Methods for Individual Piles in Permafrost Under Static Axial Compressive Load
SIGNIFICANCE AND USE
4.1 This test method will provide a relationship between time to failure, creep rate, and displacement to failure for specific failure loads at specific test temperatures as well as a relationship between creep rate and applied load at specific test temperatures for loads less than failure loads.
4.2 Pile design for specific soil temperatures may be controlled by either limiting long-term stress to below long-term strength or by limiting allowable settlement over the design life of the structure. It is the purpose of this test method to provide the basic information from which the limiting strength or long-term settlement may be evaluated by geotechnical engineers.
4.3 Data derived from pile tests at specific ground temperatures that differ from the design temperatures must be corrected to the design temperature by the use of data from additional pile tests, laboratory soil strength tests, or published correlations, if applicable, to provide a suitable means of correction.
4.4 For driven piles or grouted piles, failure will occur at the pile/soil interface. For slurry piles, failure can occur at either the pile/slurry interface or the slurry/soil interface, depending on the strength and deformation properties of the slurry material and the adfreeze bond strength. Location of the failure surface must be taken into account in the design of the test program and in the interpretation of the test results. Dynamic loads must be evaluated separately.
Note 1: The quality of the results produced by application of this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities. Agencies that meet the criteria of Practice D3740 are generally considered capable of competent and objective testing/sampling/inspection/etc. Users of this standard are cautioned that compliance with Practice D3740 does not in itself assure reliable results. Reliable results depend on many factors; Practice D3740 provides a me...
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 cast-in-place 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 A
Quick Test
8.1.2
Procedure B
Maintained Test (Optional)
8.1.3
Procedure C
Loading in Excess of Maintained Test (Optional)
8.1.4
Procedure D
Constant Time Interval Test (Optional)
8.1.5
Procedure E
Constant Rate of Penetration Test (Optional)
8.1.6
Procedure F
Constant Movement Increment Test (Optional)
8.1.7
Procedure G
Cyclic Loading Test (Optional)
8.1.8
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 a...
General Information
Relations
Buy Standard
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D5780 − 18
Standard Test Methods for
Individual Piles in Permafrost Under Static Axial
1
Compressive Load
This standard is issued under the fixed designation D5780; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
Thesetestmethodshavebeenpreparedtocovermethodsofaxialloadtestingofpilesinpermafrost.
The provisions permit the introduction of more detailed requirements and procedures when required
to satisfy the objectives of the test program. The procedures herein produce a relationship between
applied load and pile settlement for conditions of ground temperature at the time of test. The results
may be interpreted to establish long-term load capacity of piles in permafrost.
1. Scope
Procedure A Quick Test 8.1.2
Procedure B Maintained Test 8.1.3
1.1 The test methods described in this standard measure the (Optional)
Procedure C Loading in Excess of 8.1.4
axial deflection of a vertical or inclined deep foundation when
Maintained Test
loaded in static axial compression. These methods apply to all
(Optional)
Procedure D Constant Time Interval 8.1.5
deep foundations, referred to herein as piles, that function in a
Test (Optional)
manner similar to driven piles or cast-in-place piles, regardless
Procedure E Constant Rate of 8.1.6
of their method of installation, and may be used for testing Penetration Test
(Optional)
single piles or pile groups. The test results may not represent
Procedure F Constant Movement 8.1.7
the long-term performance of a deep foundation.
Increment Test
(Optional)
1.2 This standard provides minimum requirements for test- Procedure G Cyclic Loading Test 8.1.8
(Optional)
ing deep foundations under static axial compressive load.
Plans, specifications, and/or provisions prepared by a qualified
1.4 Apparatus and procedures herein designated “optional”
engineer may provide additional requirements and procedures may produce different test results and may be used only when
approved by the Engineer. The word “shall” indicates a
as needed to satisfy the objectives of a particular test program.
mandatory provision, and the word “should” indicates a
The engineer in responsible charge of the foundation design,
recommended or advisory provision. Imperative sentences
referred to herein as the Engineer, shall approve any
indicate mandatory provisions.
deviations, deletions, or additions to the requirements of this
standard.
1.5 A qualified geotechnical engineer should interpret the
test results obtained from the procedures of this standard so as
1.3 This standard allows the following test procedures:
topredicttheactualperformanceandadequacyofpilesusedin
the constructed foundation. See Appendix X1 for comments
regarding some of the factors influencing the interpretation of
1
ThistestmethodisunderthejurisdictionofASTMCommitteeD18onSoiland
test results.
Rock and is the direct responsibility of Subcommittee D18.19 on Frozen Soils and
Rock.
1.6 A qualified engineer shall design and approve all load-
Current edition approved Nov. 15, 2018. Published December 2018. Originally
ing apparatus, loaded members, support frames, and test
approved in 1995. Last previous edition approved in 2010 as D5780 – 10. DOI:
10.1520/D5780_D5780M-18. procedures. The text of this standard references notes and
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D5780 − 18
footnotes which provide explanatory material.These notes and 3. Terminology
footnotes (excluding those in tables and figures) shall not be
3.1 Definitions:
considered as requirements of the standard. This standard also
3.1.1 For definitions of terms relating to soil and rock
includes illustrations and appendixes intended only for ex-
mechanics refer to Terminology D653.
planatory or advisory use.
3.1.2 Fordefinitionsfortermsrelatedtofrozengroundrefer
1.7 Units—The values stated in either SI units or inch-
to Terminology D7099.
pound units are to be regarded separately as standard. The
3.2 Definitions of Terms Specific to This Standard:
values stated in each system may not be exact equivalents;
3.2.1 adfreeze bond strength, n—the strength of the bond
therefore,eachsystemshallbeusedindependentlyoftheother.
developed between frozen soil and the surface of the pile.
Combining values from the two systems may result in non-
conformance with the standard.
3.2.2 base load, n—a load e
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D5780 − 10 D5780 − 18
Standard Test Methods for
Individual Piles in Permafrost Under Static Axial
1
Compressive Load
This standard is issued under the fixed designation D5780; 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.
INTRODUCTION
These test methods have been prepared to cover methods of axial load testing of piles in permafrost.
The provisions permit the introduction of more detailed requirements and procedures when required
to satisfy the objectives of the test program. The procedures herein produce a relationship between
applied load and pile settlement for conditions of ground temperature at the time of test. The results
may be interpreted to establish long-term load capacity of piles in permafrost.
1. Scope*Scope
1.1 These test methods cover procedures for testing individual vertical piles to determine response of the pile to static
compressive load applied axially to the pile. These test methods are applicable 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 foundation units in permafrost foundations, referred to herein as piles, that function in a manner similar to piles driven piles
or cast-in-place piles, regardless of their method of installation. This standard is divided into the following sections: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.
Section
Referenced Documents 2
Terminology 3
Significance and Use 4
Installation of Test Piles 5
Apparatus for Applying Loads 6
Apparatus for Measuring Movements 7
Safety Requirements 8
Loading Procedures 9
Standard Test Procedures 10
Procedures for Measuring Pile Movements 11
Report 12
Precision and Bias 13
Keywords 14
NOTE 1—Apparatus and procedures designated “optional” are to be required only when included in the project specifications or if not specified, may
be used only with the approval of the engineer responsible for the foundation design. The word “shall” indicates a mandatory provision and “should”
indicates a recommended or advisory provision. Imperative sentences indicate mandatory provisions. Notes, illustrations, and appendixes included herein
are explanatory or advisory.
NOTE 2—This standard does not include the interpretation of test results or the application of test results to foundation design. See Appendix X1 for
comments regarding some of the factors influencing the interpretation of test results. A qualified geotechnical engineer should interpret the test results
for predicting pile performance and capacity.
1.2 Three different test methods are included within this standard. Method A is the standard method combining the results from
loading two separate piles with the possibility of a third alternate pile. Method B is the alternate method combining the results from
loading three separate piles with the possibility of a fourth alternate pile. Method C is a confirmation method requiring the testing
of one pile with the possibility of a second alternate. Method C is applicable only where prior data are available.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
1
This test method is under the jurisdiction of ASTM Committee D18 on Soil and Rock and is the direct responsibility of Subcommittee D18.19 on Frozen Soils and Rock.
Current edition approved Feb. 1, 2010Nov. 15, 2018. Published March 2010December 2018. Originally approved in 1995. Last previous edition approved in 20022010
as D5780 – 95 (2002). 10. DOI: 10.1520/D5780-10.10.1520/D5780_D5780M-18.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D5780 − 18
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 re
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.