Standard Test Method for Energy Measurement for Dynamic Penetrometers

SCOPE
1.1 This test method describes procedures for measuring the energy that enters the penetrometer drill rod string during dynamic penetrometer testing of soil due to the hammer impact.
1.2 This test has particular application to the comparative evaluation of N-values obtained from the Standard Penetration Tests (SPT) of soils in an open hole as in Test Method D 1586 and Practice D 6066. This procedure may also be applicable to other dynamic penetrometer tests.
1.3 LimitationsThis test method applies to penetrometers driven from above the ground surface. It is not intended for use with down-hole hammers.
1.4 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D 6026.
1.5 The method used to specify how data are collected, calculated, or recorded in this standard is not directly related to how the data can be applied in design or other uses, since that is beyond its scope. Practice D 6066 specifies how these data may be normalized.
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.

General Information

Status
Historical
Publication Date
31-Oct-2005
Current Stage
Ref Project

Relations

Buy Standard

Standard
ASTM D4633-05 - Standard Test Method for Energy Measurement for Dynamic Penetrometers
English language
7 pages
sale 15% off
Preview
sale 15% off
Preview

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D4633–05
Standard Test Method for
1
Energy Measurement for Dynamic Penetrometers
This standard is issued under the fixed designation D4633; 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.
1. Scope D6026 PracticeforUsingSignificantDigitsinGeotechnical
Data
1.1 Thistestmethoddescribesproceduresformeasuringthe
D6066 Practice for Determining the Normalized Penetra-
energy that enters the penetrometer drill rod string during
tion Resistance of Sands for Evaluation of Liquefaction
dynamic penetrometer testing of soil due to the hammer
Potential
impact.
1.2 This test has particular application to the comparative
3. Terminology
evaluation of N-values obtained from the Standard Penetration
3.1 Definitions of Terms Specific to This Standard:
Tests (SPT) of soils in an open hole as in Test Method D1586
3.1.1 acceleration transducer, or accelerometer—
and Practice D6066. This procedure may also be applicable to
instrument attached on, around, or within a continuous column
other dynamic penetrometer tests.
ofdrillrodstomeasurethetime-varyingaccelerationgenerated
1.3 Limitations—This test method applies to penetrometers
in the drill rods by the impact of the hammer.
drivenfromabovethegroundsurface.Itisnotintendedforuse
3.1.2 anvil—the mass at the top of the drill rods that is
with down-hole hammers.
struck by the hammer.
1.4 All observed and calculated values shall conform to the
3.1.3 drill rods—the steel rods connecting the hammer
guidelines for significant digits and rounding established in
system above the ground surface to the sampler below the
Practice D6026.
surface.
1.5 The method used to specify how data are collected,
3.1.4 force transducer—a section of drill rod instrumented
calculated, or recorded in this standard is not directly related to
with strain gages and inserted into the continuous column of
how the data can be applied in design or other uses, since that
drill rods to measure the time-varying force generated in the
is beyond its scope. Practice D6066 specifies how these data
drill rods by the impact of the hammer.
may be normalized.
3.1.5 hammer—an impact mass that is raised and dropped
1.6 This standard does not purport to address all of the
to create an impact on the drill rods.
safety concerns, if any, associated with its use. It is the
3.1.6 impedance (of the drill rod)—a property of the drill
responsibility of the user of this standard to establish appro-
rod equal to the drill rod elastic modulus times the cross
priate safety and health practices and determine the applica-
sectional area divided by the velocity of wave propagation.
bility of regulatory limitations prior to use.
3.1.7 instrumented subassembly—ashortsectionofdrillrod
2. Referenced Documents instrumented to measure force and acceleration which is
2
inserted at the top of the drill rod and below the anvil.
2.1 ASTM Standards:
3.1.8 penetrometer—any sampler, cone, blade, or other
D1586 Test Method for Penetration Test (SPT) and Split-
instrument placed at the bottom of the drill rods.
Barrel Sampling of Soils
3.2 Symbols:
D3740 Practice for Minimum Requirements for Agencies
EFV = the energy transmitted to the drill rod from the
Engaged in Testing and/or Inspection of Soil and Rock as
hammer during the impact event (see 7.10).
Used in Engineering Design and Construction
ETR = (EFV/ PE)–ratioofthemeasuredenergytransferred
to the drill rods to the theoretical potential energy.
1
ThistestmethodisunderthejurisdictionofASTMCommitteeD18onSoiland
L = length between the location of transducers on the instru-
Rock and is the direct responsibility of Subcommittee D18.02 on Sampling and
mented subassembly and the bottom of the penetrometer.
Related Field Testing for Soil Evaluations.
2L/c = the time required for the stress wave (traveling at a
Current edition approved Nov. 1, 2005. Published November 2005. DOI:
10.1520/D4633-05.
known wave speed, c, in steel of 5123 m/s) to travel from the
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
measurement location to the bottom of the penetrometer and
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
return to the measurement location.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D4633–05
N-value = the number of hammer blows required to advance subassembly shall be made from the same type of drill rod as
the s
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.