ASTM C1091-02

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: C 1091 – 02
Standard Test Method for
Hydrostatic Infiltration and Exfiltration Testing of Vitrified
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Clay Pipe Lines
This standard is issued under the fixed designation C 1091; 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 The time between completion of the backfill operation and
hydrostatic testing shall be established by the approving
1.1 This test method defines procedures for hydrostatically
authority.
testing vitrified clay pipe lines, to demonstrate the structural
integrity of the installed line. Refer to Practice C 12.
5. Significance and Use
1.2 This test method is suitable for testing gravity-flow pipe
5.1 The tests called for herein, for their results, indicate the
lines constructed of vitrified clay pipe or combinations of clay
acceptability of installed vitrified clay pipelines.
pipe and other pipe materials.
1.3 This test method is applicable to the testing of the pipe
6. Preparation of the Line
lines only. Manholes or other structures should be tested
6.1 To ensure the proper seating of the test plugs and the
separately.
accuracy of the test, the lines should be cleaned prior to testing.
1.4 The values stated in inch-pound units are to be regarded
6.2 Examples of methods for cleaning the lines are the
as the standard. The values given in parentheses are provided
sewer cleaning ball and high pressure flushing equipment.
for information only.
1.5 This standard does not purport to address all of the
7. Procedure
safety problems, if any, associated with its use. It is the
7.1 Infiltration Testing:
responsibility of the user of this standard to establish appro-
7.1.1 This test procedure is applicable where the measured
priate safety and health practices and determine the applica-
water table is 2 ft (610 mm) or greater above the pipe barrel at
bility of regulatory limitations prior to use.
the midpoint of the test section (see Note 1). Where the ground
water elevation is indeterminate, less than 2 ft (610 mm) above
2. Referenced Documents
the top of the pipe barrel, or the line is partially below the water
2.1 ASTM Standards:
2 table, use a combination of both the air test and infiltration
C 12 Practice for Installing Vitrified Clay Pipe Lines
procedure.
C 828 Test Method for Low-Pressure Air Test of Vitrified
2
Clay Pipe Lines
NOTE 1—What can be called false infiltration represents condensate on
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the pipe walls. This may amount to as much as 50 gal/in.
C 896 Terminology Relating to Clay Products
diameter·mile·day (4.6 L/mm diameter·kilometre·day). Thus, evaluate
3. Terminology flow in the pipeline for this condition.
3.1 Terminology C 896 can be used for clarifications of
7.1.2 Determine the allowable infiltration rate for the test
terminology in this test method. section using Table 1.
7.1.3 Discontinue all pumping of ground water for a period
4. Summary of Test Method
of 24 h prior to testing.
4.1 This test method shall be performed on lines after
7.1.4 Plug the inlet to the test section to be tested. It is
connection laterals, if any, have been plugged and adequately
usually necessary to also plug the inlet of the upper manhole to
braced to withstand the test pressure, and after the trenches
prevent the manhole from filling with water or provide a
have been backfilled for a sufficient time to generate a
method of de-watering the manhole or remotely removing the
significant portion of the ultimate trench load on the pipe line.
plug at the inlet to the test section. Securely plug all lateral
inlets to the line.
1 7.1.5 To determine the infiltration rate, measure the flow at
This test method is under the jurisdiction of ASTM Committee C04 on Vitrified
the outlet of the test section.
Clay Pipe and is the direct responsibility of Subcommittee C04.20 on Methods of
Test and Specifications.
7.1.5.1 At the outlet of the test section, collect the water and
Current edition approved Sept. 10, 2002. Published November 2002. Originally
measure the quantity collected within a specific time. Achieve
published as C 1091 – 88. Last previous edition C 1091 – 99.
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collection and measurement with the use of a plug having a
Annual Book of ASTM Standards, Vol 04.05.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
C1091–02
TABLE 1 Allowable Infiltration/Exfiltration Test Rate in Gallons/
will be of sufficient leng
...