ASTM C1091-99

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.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 1091 – 99
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Test Method for
Hydrostatic Infiltration and Exfiltration Testing of Vitrified
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 significant portion of the ultimate trench load on the pipe line.
The time between completion of the backfill operation and
1.1 This test method defines procedures for hydrostatically
hydrostatic testing shall be established by the approving
testing vitrified clay pipe lines, to demonstrate the structural
authority.
integrity of the installed line. Refer to Practice C 12.
1.2 This test method is suitable for testing gravity-flow pipe
5. Significance and Use
lines constructed of vitrified clay pipe or combinations of clay
5.1 The tests called for herein, for their results, indicate the
pipe and other pipe materials.
acceptability of installed vitrified clay pipelines.
1.3 This test method is applicable to the testing of the pipe
lines only. Manholes or other structures should be tested
6. Preparation of the Line
separately.
6.1 To ensure the proper seating of the test plugs and the
1.4 The values stated in inch-pound units are to be regarded
accuracy of the test, the lines should be cleaned prior to testing.
as the standard. The values given in parentheses are provided
6.2 Examples of methods for cleaning the lines are the
for information only.
sewer cleaning ball and high pressure flushing equipment.
1.5 This standard does not purport to address all of the
safety problems, if any, associated with its use. It is the
7. Procedure
responsibility of the user of this standard to establish appro-
7.1 Infiltration Testing:
priate safety and health practices and determine the applica-
7.1.1 This test procedure is applicable where the measured
bility of regulatory limitations prior to use.
water table is 2 ft (610 mm) or greater above the pipe barrel at
the midpoint of the test section (see Note 1). Where the ground
2. Referenced Documents
water elevation is indeterminate, less than 2 ft (610 mm) above
2.1 ASTM Standards:
the top of the pipe barrel, or the line is partially below the water
C 12 Practice for Installing Vitrified Clay Pipe Lines
table, use a combination of both the air test and infiltration
C 828 Test Method for Low-Pressure Air Test of Vitrified
procedure.
Clay Pipe Lines
C 896 Terminology Relating to Clay Products
NOTE 1—What can be called false infiltration represents condensate on
IEEE/ASTM SI 10 Standard for Use of the International the pipe walls. This may amount to as much as 50 gal/in. diameter/mile/
day (4.6 L/mm diameter/kilometre/day). Thus, evaluate flow in the
System of Units (SI): The Modern Metric System
pipeline for this condition.
3. Terminology
7.1.2 Determine the allowable infiltration rate for the test
3.1 Terminology C 896 can be used for clarifications of section using Table 1.
terminology in this test method.
7.1.3 Discontinue all pumping of ground water for a period
of 24 h prior to testing.
4. Summary of Test Method
7.1.4 Plug the inlet to the test section to be tested. It is
4.1 This test method shall be performed on lines after
usually necessary to also plug the inlet of the upper manhole to
connection laterals, if any, have been plugged and adequately
prevent the manhole from filling with water or provide a
braced to withstand the test pressure, and after the trenches
method of de-watering the manhole or remotely removing the
have been backfilled for a sufficient time to generate a
plug at the inlet to the test section. Securely plug all lateral
inlets to the line.
7.1.5 To determine the infiltration rate, measure the flow at
This test method is under the jurisdiction of ASTM Committee C-4 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 April 10, 1999. Published July 1999. Originally
measure the quantity collected within a specific time. Achieve
published as C 1091 – 88. Last previous edition C 1091 – 98.
collection and measurement with the use of a plug having a
Annual Book of ASTM Standards, Vol 04.05.
pipe outlet and a calibrated container after constant flow is
Annual Book of ASTM Standards, Vol 14.02.
NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Con
...