Standard Test Method for Low Strain Impact Integrity Testing of Deep Foundations

SIGNIFICANCE AND USE
4.1 Low strain impact integrity testing provides acceleration or velocity and force (optional) data on slender structural elements (that is, structural columns, driven concrete piles, cast in place concrete piles, concrete filled steel pipe piles, timber piles, etc.). The method works best on solid concrete sections, and has limited application to unfilled steel pipe piles, H piles, or steel sheet piles. These data assist evaluation of pile integrity and pile physical dimensions (that is, cross-sectional area, length), continuity, and consistency of the pile material, although evaluation is approximate and not exact. This test method will not give information regarding the pile bearing capacity.  
4.1.1 Methods of Testing:
4.1.1.1 Pulse Echo Method (PEM)—The pile head motion is measured as a function of time. The time domain record is then evaluated for pile integrity.
4.1.1.2 Transient Response Method (TRM)—The pile head motion and force (measured with an instrumented hammer) are measured as a function of time. The data are evaluated usually in the frequency domain.
SCOPE
1.1 This test method covers the procedure for determining the integrity of individual vertical or inclined piles by measuring and analyzing the velocity (required) and force (optional) response of the pile induced by an (hand held hammer or other similar type) impact device usually applied axially and perpendicularly to the pile head surface. This test method is applicable to long structural elements that function in a manner similar to any deep foundation units (such as driven piles, augeured piles, or drilled shafts), regardless of their method of installation provided that they are receptive to low strain impact testing.  
1.2 This standard provides minimum requirements for low strain impact testing of piles. Plans, specifications, and/or provisions prepared by a qualified engineer, and approved by the agency requiring the test(s), may provide additional requirements and procedures as needed to satisfy the objectives of a particular test program.  
1.3 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.  
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.5 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026.  
1.6 The method used to specify how data are collected, calculated, or recorded in this standard is not directly related to the accuracy to which the data can be applied in design or other uses, or both. How one applies the results obtained using this standard is beyond its scope.  
1.7 This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety concerns, if any, associated with its use. 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. 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. Agencies that meet the criteria of Practice D3740 are generally considered capable of competent and objective testing/sampling/ inspection/etc. Users of this test method are cautioned that compliance with Practice D3740 does not in itself assure reliable results. Reliable results depend on many factors; Practice D3740 provides a means of evaluating some of those factors.

General Information

Status
Historical
Publication Date
31-Oct-2013
Technical Committee
Drafting Committee
Current Stage
Ref Project

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ASTM D5882-07(2013) - Standard Test Method for Low Strain Impact Integrity Testing of Deep Foundations
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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D5882 − 07(Reapproved 2013)
Standard Test Method for
1
Low Strain Impact Integrity Testing of Deep Foundations
This standard is issued under the fixed designation D5882; 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.
1. Scope establish appropriate safety and health practices and deter-
mine the applicability of regulatory limitations prior to use.
1.1 This test method covers the procedure for determining
the integrity of individual vertical or inclined piles by measur-
NOTE 1—he quality of the result produced by this test method is
ing and analyzing the velocity (required) and force (optional) dependent on the competence of the personnel performing it, and the
suitability of the equipment and facilities used. Agencies that meet the
responseofthepileinducedbyan(handheldhammerorother
criteria of Practice D3740 are generally considered capable of competent
similartype)impactdeviceusuallyappliedaxiallyandperpen-
and objective testing/sampling/ inspection/etc. Users of this test method
dicularlytothepileheadsurface.Thistestmethodisapplicable
are cautioned that compliance with Practice D3740 does not in itself
to long structural elements that function in a manner similar to
assure reliable results. Reliable results depend on many factors; Practice
D3740 provides a means of evaluating some of those factors.
anydeepfoundationunits(suchasdrivenpiles,augeuredpiles,
or drilled shafts), regardless of their method of installation
2. Referenced Documents
provided that they are receptive to low strain impact testing.
2
1.2 This standard provides minimum requirements for low 2.1 ASTM Standards:
D653Terminology Relating to Soil, Rock, and Contained
strain impact testing of piles. Plans, specifications, and/or
provisions prepared by a qualified engineer, and approved by Fluids
D3740Practice for Minimum Requirements for Agencies
the agency requiring the test(s), may provide additional re-
quirements and procedures as needed to satisfy the objectives Engaged in Testing and/or Inspection of Soil and Rock as
Used in Engineering Design and Construction
of a particular test program.
D6026Practice for Using Significant Digits in Geotechnical
1.3 The text of this standard references notes and footnotes
Data
whichprovideexplanatorymaterial.Thesenotesandfootnotes
(excluding those in tables and figures) shall not be considered
3. Terminology
as requirements of the standard.
3.1 Definitions—Except as defined in 3.2, the terminology
1.4 The values stated in SI units are to be regarded as
used in this test method conforms with Terminology D653.
standard. No other units of measurement are included in this
standard.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 pile integrity, n—the qualitative evaluation of the
1.5 All observed and calculated values shall conform to the
physical dimensions, continuity of a pile, and consistency of
guidelines for significant digits and rounding established in
the pile material.
Practice D6026.
3.2.2 pile impedance, n—the dynamic Young’s modulus of
1.6 The method used to specify how data are collected,
the pile material multiplied by the applicable cross sectional
calculated,orrecordedinthisstandardisnotdirectlyrelatedto
area of the pile and divided by the strain wave speed.
theaccuracytowhichthedatacanbeappliedindesignorother
uses, or both. How one applies the results obtained using this
3.2.3 pulse echo method, n—test in which measurements of
standard is beyond its scope.
the pile head velocity and force (force measurement optional)
are evaluated as a function of time.
1.7 This standard may involve hazardous materials,
operations, and equipment. This standard does not purport to
3.2.4 transient response method, n—test in which the ratio
address all of the safety concerns, if any, associated with its
of velocity transform to force transform (force measurement
use. It is the responsibility of the user of this standard to
required) are evaluated as a function of frequency.
1
ThistestmethodisunderthejurisdictionofASTMCommitteeD18onSoiland
2
RockandisthedirectresponsibilityofSubcommitteeD18.11onDeepFoundations. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Nov. 1, 2013. Published January 2014. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1995. Last previous edition approved in 2000 as D5882 – 07. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/D5882-07R13. the ASTM website.
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