ASTM C924-02

Standard Practice for Testing Concrete Pipe Sewer Lines by Low-Pressure Air Test Method

SIGNIFICANCE AND USE
This is not a routine test. The values recorded are applicable only to the sewer being tested and at the time of testing.
SCOPE
1.1 This practice covers procedures for testing concrete pipe sewer lines, when using the low-pressure air test method to demonstrate the integrity of the installed material and the construction procedures. This practice is used for testing 4 to 24-in. circular concrete pipe sewer lines utilizing gasketed joints.
1.2 This practice is also used as a preliminary test to enable the installer to demonstrate the condition of the line prior to backfill.
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 (see Section 6, Safety Precautions).
1.4 A complete metric companion to Practice C 924 has been developed—C 924 M; therefore, no metric equivalents are presented in this practice.
Note 1—The user of this practice is advised that air test criteria presented in this practice are similar to those in general use. The test and criteria have been used widely and successfully in testing smaller diameter pipe, but additional data are required to confirm the safety and applicability or develop criteria for pipe larger than 24 in. in diameter. Larger pipe will be accepted more conveniently by visual inspection and individual joint testing.
Note 2—The user of this practice is advised that no correlation has been found between air loss and water leakage.

General Information

• Status: Historical
• Publication Date: 09-Aug-2002
• ICS: 23.040.50 - Pipes and fittings of other materials
• Technical Committee: C13 - Concrete Pipe
• Drafting Committee: C13.09 - Methods of Test

Relations

• Replaces: ASTM C924-89(1997) - Standard Practice for Testing Concrete Pipe Sewer Lines by Low-Pressure Air Test Method
• Effective Date: 10-Aug-2002
• Replaced By: ASTM C924-02(2009) - Standard Practice for Testing Concrete Pipe Sewer Lines by Low-Pressure Air Test Method (Withdrawn 2013)
• Effective Date: 01-Jun-2009
• Referred By: ASTM F1417-11A(2019)e1 - Standard Practice for Installation Acceptance of Plastic Non-pressure Sewer Lines Using Low-Pressure Air
• Effective Date: 10-Aug-2002
• Referred By: ASTM C1244/C1244M-20 - Standard Test Method for Concrete Sewer Manholes by the Negative Air Pressure (Vacuum) Test Prior to Backfill
• 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:C924–02
Standard Practice for
Testing Concrete Pipe Sewer Lines by Low-Pressure Air
1
Test Method
This standard is issued under the fixed designation C 924; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 3. Terminology
1.1 Thispracticecoversproceduresfortestingconcretepipe 3.1 Definitions—For definitions of terms relating to con-
sewer lines, when using the low-pressure air test method to crete pipe, see Terminology C 822.
demonstrate the integrity of the installed material and the
4. Summary of Practice
construction procedures. This practice is used for testing 4 to
24-in. circular concrete pipe sewer lines utilizing gasketed 4.1 The sewer line to be tested is plugged.Air is introduced
at low pressures into the plugged line. The amount of air loss
joints.
1.2 This practice is also used as a preliminary test to enable is used to determine the acceptability of the sewer line.
the installer to demonstrate the condition of the line prior to
5. Significance and Use
backfill.
5.1 This is not a routine test. The values recorded are
1.3 This standard does not purport to address all of the
applicable only to the sewer being tested and at the time of
safety concerns, if any, associated with its use. It is the
testing.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
6. Safety Precautions
bility of regulatory limitations prior to use (see Section 6,
6.1 The air test will be dangerous if a line is not prepared
Safety Precautions).
properly and proper procedures are not followed.
1.4 A complete metric companion to Practice C 924 has
6.2 It is extremely important that plugs be installed and
been developed—C 924 M; therefore, no metric equivalents
braced in such a way as to prevent blowouts. It is also
are presented in this practice.
imperative that the pressure in the pipe be relieved completely
NOTE 1—The user of this practice is advised that air test criteria
before any plug is loosened for removal.
presented in this practice are similar to those in general use. The test and
criteriahavebeenusedwidelyandsuccessfullyintestingsmallerdiameter
NOTE 3—As an example, 4-psi air pressure acting on one side of a
pipe, but additional data are required to confirm the safety and applica-
15-in. plug results in a total force of approximately 700 lbf on the plug.
bilityordevelopcriteriaforpipelargerthan24in.indiameter.Largerpipe
Such a force is capable of causing the expulsion of an improperly installed
will be accepted more conveniently by visual inspection and individual
plug.
joint testing.
6.3 Pressurizing equipment shall include a 6-psi pressure
NOTE 2—The user of this practice is advised that no correlation has
relief device to reduce hazards and avoid over-pressurization
been found between air loss and water leakage.
with possible damage to the line.
2. Referenced Documents
6.4 No one shall be allowed in or near the manholes during
pressurization, testing, or depressurization.
2.1 ASTM Standards:
C 822 Terminology Relating to Concrete Pipe and Related
2 7. Capacity of Air Compressor
Products
7.1 To provide satisfactory test results, the air compressor
C 969 Practice for Infiltration and Exfiltration Acceptance
2
shall be capable of pressurizing the sewer test section in the
Testing of Installed Precast Concrete Pipe Sewer Lines
required test time, or less, as determined by 9.1. The compres-
sor capacity required to accomplish the pressurization is equal
1
This practice is under the jurisdiction of ASTM Committee C13 on Concrete
to the rate necessary to fill the sewer to the desired pressure
Pipe and is the direct responsibility of Subcommittee C13.09 on Methods of Test.
plus the allowable air loss rate:
Current edition approved Aug. 10, 2002. Published October 2002. Originally
published as C 924 – 84. Last previous edition C 924 – 89(1997).
2
Annual Book of ASTM Standards, Vol 04.05.
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C924–02
2
TABLE 2 Allowable Air Loss for Various Pipe Sizes
0.17D L
C 5 1 Q (1)
T
3 3
D, Nominal Q ft /min D, Nominal Q ft /min
Pipe Size, in. Pipe Size, in.,
where:
C = compressor capacity, cfm,
4215 4
T = required test time, or less, min,
6218 5
D = pipe internal diameter, ft,
8 2 21 5.5
L = length of test section, ft, and
10 2.5 24 6
Q = allowable air loss, rate, cfm. 12 3
8. Preparation of
...