ASTM C1214M-94(2000)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: C 1214M – 94 (Reapproved 2000)
METRIC
Standard Test Method for
Concrete Pipe Sewerlines by Negative Air Pressure
(Vacuum) Test Method [Metric]
This standard is issued under the fixed designation C 1214M; 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.
TABLE 1 Minimum Test Time
1. Scope
Nominal Nominal
1.1 This test method covers procedures for testing concrete
T (Time), T (Time),
Pipe Pipe
min/100 m min/100 m
pipe sewerlines, when using the negative air pressure (vacuum)
Size, mm Size, mm
test method to demonstrate the integrity of the installed
100 0.9 525 9.7
material and the construction procedures. This test method
150 2.0 600 11.0
200 3.5 675 13.0
covers testing of 100 to 900-mm diameter circular concrete
250 4.7 750 15.0
pipe sewerlines utilizing gasketed joints.
300 6.0 825 17.0
1.2 Methods described in this test method may also be used
375 6.8 900 19.0
450 7.7
as a preliminary test to enable the manufacturer or installer to
demonstrate the condition of sewer pipe prior to delivery or
backfill. Minimum test times presented in Table 1 are for
pipelines. Holding times for testing an individual pipe may
C 969 Practice for Infiltration and Exfiltration Acceptance
have to be increased to allow for the accumulation of leakage
Testing of Installed Precast Concrete Pipe Sewer Lines
when the tested pipe are incorporated into a continuous
3. Terminology
pipeline.
1.3 This test method is the metric companion to Test
3.1 Definitions—For definitions of terms relating to con-
Method C 1214.
crete pipe, see Terminology C 822.
NOTE 1—The negative air pressure (vacuum) test criteria presented in
4. Summary of Test Method
this test method are similar to those in general use. The test and criteria
have been used widely and successfully in testing smaller diameter pipe. 4.1 The sewerline to be tested is plugged. Air is removed
Larger pipe may be accepted more conveniently by visual inspection and
from the plugged line by a vacuum pump or vacuum reservoir.
individual joint testing.
The amount of vacuum loss is used to determine the accept-
NOTE 2—It should be understood that no correlation has been found
ability of the sewerline.
between loss of vacuum and water leakage.
5. Significance and Use
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
5.1 This is not a routine test. The values recorded are
responsibility of the user of this standard to establish appro-
applicable only to the sewer being tested and at the time of
priate safety and health practices and determine the applica-
testing.
bility of regulatory limitations prior to use. See Section 6 for
6. Safety Precautions
specific safety precautions.
6.1 This test may be dangerous if a line is not prepared
2. Referenced Documents
properly and proper procedures are not followed.
2.1 ASTM Standards:
6.2 Access manholes or structures must be ventilated and air
C 822 Terminology Relating to Concrete Pipe and Related
quality continuously monitored.
Products
6.3 No one should be allowed in or near the manholes
C 924 Practice for Testing Concrete Pipe Sewer Lines by
during testing.
Low-Pressure Air Test Method
7. Preparation of the Sewerline
7.1 Where practical, clean the line prior to testing, wet the
This test method is under the jurisdiction of ASTM Committee C13 on
Concrete Pipe and is the direct responsibility of Subcommittee C13.09 on Methods pipe surface, and eliminate debris.
of Test.
NOTE 3—A wetted exterior pipe surface is desirable and will produce
Current edition approved July 15, 1994. Published September 1994. Originally
e1
more consistent test results. Air may pass through the walls of dry pipe.
published as C 1214M–92. Last previous edition C 1214M–92 .
Annual Book of ASTM Standards, Vol 04.05. This can be overcome by wetting the pipe. Usually, moisture absorbed
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NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
C 1214M
TABLE 2 Allowable Air Loss
sewerline is lowered by approximately 27.0 kPa of mercury.
Nominal Nominal Close the valve on the vacuum line and shut off the vacuum
3 3
Pipe Q,m /min Pipe Q,m /min
pump. Allow the air pressure to stabilize.
Size, mm Size, mm
8.3 When the pressure has stabilized and is at or below the
100 0.6 525 0.15
starting test vacuum of 23.6 kPa of mercury, commence the test
150 0.6 600 0.17
200 0.6 675 0.18 by allowing the gage pressure to drop to 23.6 kPa of mercury,
250 0.7 750 0.20
at which point the time recording is initiated. Record the drop
300 0.8 825 0.21
in vacuum for the test period.
375 0.11 900 0.23
450 0.14
8.4 If the drop in vacuum is 6.8 kPa of mercury or less
during the test period, accept the line. If the drop in vacuum is
more than 6.8 kPa of mercury during the test period, inspect,
from the backfill is sufficient to cope with this situation. If the problem
evaluate, and retest the line to determine the cause of excessive
persists, segmental testing of the line will establish if there is a significant
vacuum loss.
leak.
8.5 Use or failure of this vacuum test shall not preclude
7.2 Plug all pipe outlets including laterals. Review safety
acceptance by appropriate low-pressure air (see Practice
precautions in Section 6.
C 924), water infiltration or exfiltration testing (see Practice
C 969), or other means.
8. Procedure
8.1 Determine the test time for the sewerline to be tested by
9. Vacuum Test Criteria
using Table 1. Table 1 has been established using the criteria
9.1 An appropriate allowable vacuum loss
...