ASTM D3665-06
(Practice)Standard Practice for Random Sampling of Construction Materials
Standard Practice for Random Sampling of Construction Materials
SCOPE
1.1 This practice covers the determination of random locations (or timing) at which samples of construction materials can be taken. For the exact physical procedures for securing the sample, such as a description of the sampling tool, the number of increments needed for a sample, or the size of the sample, reference should be made to the appropriate standard method. The selection procedures in Section 5 utilize the table of four-digit numbers given in Table 1.
1.2 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.
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Designation:D3665–06
Standard Practice for
1
Random Sampling of Construction Materials
This standard is issued under the fixed designation D 3665; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope E 141 Practice for Acceptance of Evidence Based on the
Results of Probability Sampling
1.1 This practice covers the determination of random loca-
tions (or timing) at which samples of construction materials
3. Significance and Use
canbetaken.Fortheexactphysicalproceduresforsecuringthe
3.1 This practice is useful for determining the location or
sample, such as a description of the sampling tool, the number
time, or both, to take a sample in order to minimize any
of increments needed for a sample, or the size of the sample,
unintentional bias on the part of the person taking the sample.
reference should be made to the appropriate standard method.
The selection procedures in Section 5 utilize the table of
NOTE 1—The effectiveness of this practice in achieving random
four-digit numbers given in Table 1. samples is limited only by the conscientiousness of the user in following
the stipulated procedures.
1.2 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
3.2 The selection procedures and examples in this standard
responsibility of the user of this standard to establish appro-
provide a practical approach for ensuring that construction
priate safety and health practices and determine the applica-
material samples are obtained in a random manner. Additional
bility of regulatory limitations prior to use.
details concerning the number of sample increments, the
number of samples, the quantities of material in each, and the
2. Referenced Documents
procedures for extracting sample increments or samples from
2
2.1 ASTM Standards:
theconstructionlotorprocessarecontainedinPracticesC 172,
C 172 Practice for Sampling Freshly Mixed Concrete
C 183,D75, D 140, D 979, D 5361, and Test Method D 345.
C 183 Practice for Sampling and the Amount of Testing of
3.3 This standard contains examples citing road and paving
Hydraulic Cement
materials. The concepts outlined therein are applicable to the
D75 Practice for Sampling Aggregates
random sampling of any construction material and can easily
D 140 Practice for Sampling Bituminous Materials
be adapted thereto.
D 345 Test Method for Sampling and Testing Calcium
3.4 Additional sampling guidance is provided in Practice
Chloride for Roads and Structural Applications
E 105 concerning probability sampling, Practice E 122 con-
D 979 Practice for Sampling Bituminous Paving Mixtures
cerning choosing sample sizes to estimate the average quality
D 5361 Practice for Sampling Compacted Bituminous Mix-
of a lot or process (see Note 2), and in Practice E 141 for
tures for Laboratory Testing
acceptance of evidence based on results of probability sam-
E 105 Practice for Probability Sampling Of Materials
pling.
E 122 Practice for Calculating Sample Size to Estimate,
NOTE 2—The guidance contained in Practice E 122 is not available in
With a Specified Tolerable Error, the Average for a
other documents referenced in this section.
Characteristic of a Lot or Process
3.5 The best and most practical method for ensuring that
samples of construction materials include the full range of a
construction process is by incorporating a stratified-random
1
This practice is under the jurisdiction of ASTM Committee D04 on Road and
sampling procedure into the sampling process. To implement a
Paving Materials and is the direct responsibility of Subcommittee D04.30 on
stratified-random sampling procedure, divide the lot to be
Methods of Sampling.
sampledintothedesirednumberofequalsublotsandrandomly
Current edition approved Jan. 1, 2006. Published January 2006. Originally
sample each sublot in accordance with this standard.
approved in 1978. Last previous edition approved in 2002 as D 3665 – 02.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
NOTE 3—If the sublots are of unequal size, it will likely be necessary to
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
weight the samples in order to maintain a fair and defensible sampling
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. process.
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D3665–06
TABLE 1 Table of Random Numbers
Column
Row 123456789 10 11 12 13 14 15 16 17 18 19 20
1
...
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