ASTM C1542/C1542M-02

Standard Test Method for Measuring Length of Concrete Cores

SIGNIFICANCE AND USE
This test method provides two procedures for determining the length of a core as measured along its axis. This length is used in conjunction with length to diameter relationships, condition surveys, absorption, density and voids analysis, petrography, cement content analysis, and other applications. It does not meet requirements for determining the distance between two parallel surfaces, which represents the thickness of a structural element often used to establish compliance with design specifications as outlined by Test Method C 174.
SCOPE
1.1 This test method covers the determination of the length of a core drilled from a concrete structure when the reason is other than measuring dimensional tolerances of concrete elements.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the inch-pound units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other.
1.3 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: 09-Aug-2002
• ICS: 91.080.40 - Concrete structures
• Technical Committee: C09 - Concrete and Concrete Aggregates
• Drafting Committee: C09.69 - Miscellaneous Tests

Relations

• Replaced By: ASTM C1542/C1542M-02(2010) - Standard Test Method for Measuring Length of Concrete Cores
• Effective Date: 01-Dec-2010
• Referred By: ASTM C1202-22e1 - Standard Test Method for Electrical Indication of Concrete’s Ability to Resist Chloride Ion Penetration
• Effective Date: 10-Aug-2002
• Referred By: ASTM C42/C42M-20 - Standard Test Method for Obtaining and Testing Drilled Cores and Sawed Beams of Concrete
• Effective Date: 10-Aug-2002

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: C1542/C1542M – 02
Standard Test Method for
Measuring Length of Concrete Cores
This standard is issued under the fixed designation C1542/C1542M; 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 4. Apparatus
1.1 This test method covers the determination of the length 4.1 Jaw Caliper, depth of jaw 65 mm [2.5 in.]. Measuring
of a core drilled from a concrete structure when the reason is range 0 to 300 mm [0 to 12 in.]. Accuracy to 0.03 mm [0.001
other than measuring dimensional tolerances of concrete ele- in.].
ments. 4.2 Ruler, 300 to 380 mm [12 to 15 in.] divided into 1 mm
1.2 The values stated in either SI units or inch-pound units [ ⁄16 or 0.1 in.] graduations.
are to be regarded separately as standard. Within the text, the
5. Procedure
inch-pound units are shown in brackets. The values stated in
5.1 Jaw Caliper Procedure:
each system are not exact equivalents; therefore, each system
shall be used independently of the other. 5.1.1 Hold the specimen and place the open jaws of the
caliper midpoint between the center and edge of the specimen.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the Measure and record the value to the nearest 0.25 mm [0.01 in.].
Rotate the specimen 90º, 180º, and 270º and repeat procedure.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- Obtain one measurement across the center of the specimen and
record.
bility of regulatory limitations prior to use.
5.2 Ruler Procedure:
2. Referenced Documents
5.2.1 Position core with finished or formed face placed
2.1 ASTM Standards: down against flat and level surface. Place ruler on flat surface
C42/C42M Test Method for Obtaining and Testing Drilled against side of core and measure length to nearest 1 mm [ ⁄16 or
Cores and Sawed Beams of Concrete 0.1 in.] and record. Rotate core and repeat measurements at
C174 Test Method for Measuring Thickness of Concrete approximately 90º, 180º, and 270º.
Elements Using Drilled Concrete Cores
NOTE 1—This procedure does not intend to include in the length
C670 Practice for Preparing Precision and Bias Statements
measurement adhered pieces of material not part of the original concrete
for Test Methods for Construction Materials
mixture.
3. Significance and Use
6. Report
3.1 This test method provides two procedures for determin-
6.1 Jaw Caliper—Average five measurements and report to
ing the length of a core as measured along its axis. This length
nearest 1 mm [0.1 in.].
is used in conjunction with length to diameter relationships,
6.2 Ruler—Average four measurements and report to near-
condition surveys, absorption, density and voids analysis,
est 1 mm [0.1 in.].
petrography, cement content analysis, and other applications. It
7. Precision and Bias
does not meet requirements for determining the distance
between two parallel surfaces, which represents the thickness
7.1 Precision:
of a structural element often used to establish compliance with
7.1.1 With-and between-lab precision of the jaw caliper and
design specifications as outlined by Test Method C174.
ruler procedures was estimated from the results of an inter-
laboratory study that included 12 laboratories, each measuring
1 three times
...