ASTM F3240-19(2023)
(Practice)Standard Practice for Installation of Seamless Molded Hydrophilic Gaskets (SMHG) for Long-Term Watertightness of Cured-in-Place Rehabilitation of Main and Lateral Pipelines
Standard Practice for Installation of Seamless Molded Hydrophilic Gaskets (SMHG) for Long-Term Watertightness of Cured-in-Place Rehabilitation of Main and Lateral Pipelines
SIGNIFICANCE AND USE
5.1 This practice is for use by designers and specifiers, regulatory agencies, owners, and inspection organizations that are involved in the rehabilitation of main and lateral pipelines and manholes. As for any practice, modifications may be required for specific job conditions.
SCOPE
1.1 This practice covers the requirements for the installation of seamless molded hydrophilic gaskets (SMHG) in cured-in-place pipe (CIPP) rehabilitation of main and lateral pipelines.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.3 There is no similar or equivalent ISO Standard.
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Relations
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: F3240 − 19 (Reapproved 2023)
Standard Practice for
Installation of Seamless Molded Hydrophilic Gaskets
(SMHG) for Long-Term Watertightness of Cured-in-Place
1,2
Rehabilitation of Main and Lateral Pipelines
This standard is issued under the fixed designation F3240; 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* 2. Referenced Documents
1.1 This practice covers the requirements for the installation 2.1 ASTM Standards:
of seamless molded hydrophilic gaskets (SMHG) in cured-in- D1149 Test Methods for Rubber Deterioration—Cracking in
place pipe (CIPP) rehabilitation of main and lateral pipelines. an Ozone Controlled Environment
D1600 Terminology for Abbreviated Terms Relating to Plas-
1.2 The values stated in inch-pound units are to be regarded
tics
as standard. The values given in parentheses are mathematical
D2240 Test Method for Rubber Property—Durometer Hard-
conversions to SI units that are provided for information only
ness
and are not considered standard.
F412 Terminology Relating to Plastic Piping Systems
1.3 There is no similar or equivalent ISO Standard.
F1216 Practice for Rehabilitation of Existing Pipelines and
1.4 This standard does not purport to address all of the
Conduits by the Inversion and Curing of a Resin-
safety concerns, if any, associated with its use. It is the Impregnated Tube
responsibility of the user of this standard to establish appro-
F1743 Practice for Rehabilitation of Existing Pipelines and
priate safety, health, and environmental practices and deter- Conduits by Pulled-in-Place Installation of Cured-in-Place
mine the applicability of regulatory limitations prior to use.
Thermosetting Resin Pipe (CIPP)
1.5 This international standard was developed in accor- F2019 Practice for Rehabilitation of Existing Pipelines and
dance with internationally recognized principles on standard-
Conduits by the Pulled in Place Installation of Glass
ization established in the Decision on Principles for the
Reinforced Plastic Cured-in-Place (GRP-CIPP) Using the
Development of International Standards, Guides and Recom- UV-Light Curing Method
mendations issued by the World Trade Organization Technical
F2599 Practice for Sectional Repair of Damaged Pipe By
Barriers to Trade (TBT) Committee. Means of an Inverted Cured-In-Place Liner
F2561 Practice for Rehabilitation of a Sewer Service Lateral
and Its Connection to the Main Using a One Piece Main
This practice is under the jurisdiction of ASTM Committee F17 on Plastic
and Lateral Cured-in-Place Liner
Piping Systems and is the direct responsibility of Subcommittee F17.67 on
Trenchless Plastic Pipeline Technology. 2.2 NASSCO Guidelines:
Current edition approved Dec. 1, 2023. Published December 2023. Originally
Recommended Specifications for Sewer Collection System
ɛ1
approved in 2017. Last previous edition approved in 2019 as F3240–19 . DOI:
Rehabilitation.
10.1520/F3240–19R23.
PACP NASSCO Pipeline Assessment & Certification Pro-
Practice for Installation of Seamless Molded Hydrophilic Gaskets (SMHG) for
Long-Term Watertightness of Cured-in-Place Rehabilitation of Main and Lateral
gram
Pipelines is covered by patents 6,994,118, 7,975,726, 8,240,340, 8,240,341,
8,567,451, 8,636,036, 8,651,145, 8,667,991, 8,678,037, 8,689,835, 9,169,957,
9,366,375, 9,562,339, 9,551,449, (LMK Technologies, Inc. 1779 Chessie Lane, For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Ottawa, IL 61350). Interested parties are invited to submit information regarding the contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
identification of acceptable alternatives to this patented item to the Committee on Standards volume information, refer to the standard’s Document Summary page on
Standards, ASTM Headquarters, 100 Barr Harbor Drive, West Conshohocken, PA the ASTM website.
19428-2959. Your comments will receive careful consideration at a meeting of the Available from NASSCO 2470 Longstone Lane, Suite M Marriottsville, MD
responsible technical committee, which you may attend. 21104 https://www.nassco.org/
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F3240 − 19 (2023)
2.3 ISO Standard
ISO 17025 General requirements for the competence of
testing and calibration laboratories
3. Terminology
3.1 Definitions—Unless otherwise indicated, definitions are
in accordance with Terminology F412 and abbreviations are in
accordance with Terminology D1600.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 seamless molded hydrophilic gasket (SMHG)—a
FIG. 2 SMHG Connection Seal
single piece molded neoprene expansion gasket is positioned
between the host pipe and the liner. The gasket absorbs water
and expands to form a long-term watertight seal between the
CIPP and host pipe, which prevents infiltration and exfiltration.
3.2.2 SMHG End Seal Sleeve—a molded neoprene expan-
sion gasket in the shape of an elongated sleeve. The SMHG
End Seal Sleeve is engineered to maximize the sealing surface
area, to be self-supporting when placed at the ends of the host
pipe within 6 in. from the manhole, and to form a robust seal.
FIG. 3 SMHG O-Rings on Lateral Tube and Main Sheet
See Fig. 1.
3.2.3 SMHG Connection Seal—a molded neoprene expan-
sion gasket consisting of a tubular portion and a brim portion.
The SMHG Connection Seal when positioned at the connection
of the lateral pipe and main pipe will form a robust seal
between a main pipe or a main liner, and a lateral liner. See Fig.
2.
3.2.4 SMHG O-Ring—a molded neoprene expansion gasket
in the shape of a circular ring. The SMHG O-Ring is designed
to attach to a liner tube near the terminating end of a liner that
is either inverted or pulled into place to form a robust seal. Two
FIG. 4 SMHG O-Rings on Sectional Instead of on Main Sheet
SMHG O-rings shall be placed within a few inches from the
terminating end of a lateral tube. Whenever a SMHG Connec-
tion Seal is not used, two SMHG O-rings are placed around the
main sheet on each side of the lateral tube to form a robust seal
is designed to attach to liner used to abandon non-active sewer
for the connection. See Fig. 3. SMHG O-rings shall also be
service laterals to form a robust seal.
placed at the terminating ends of a sectional liner tube. See Fig.
3.2.6 main pipe—main collector pipe of a sewer collection
4.
system
3.2.5 SMHG lateral cap—a molded neoprene expansion
3.2.7 lateral pipe—branch pipe that provides sewer service
gasket in the shape of a circular disc. The SMHG Lateral Cap
from a building to the main pipe.
3.2.8 host pipe—the pipe to be rehabilitated using CIPP or
folded pipe liners.
Available from International Organization for Standardization (ISO), ISO
3.2.9 cured-in-place pipe—a thermoset resin saturated into
Central Secretariat, BIBC II, Chemin de Blandonnet 8, CP 401, 1214 Vernier,
an absorbent textile tube pressed against an inner pipe wall and
Geneva, Switzerland, http://www.iso.org.
cured to form a new pipe within a pipe.
3.2.10 liner—A resin impregnated cured-in-place pipe fab-
ric tube that takes the shape of a main pipe, lateral pipe, or a
main to lateral connection when installed.
3.2.11 main/lateral connection liner—–One-piece resin
saturated liner assembly consisting of a main tube or a main
sheet formed into tube (minimum of 16 in. in length) and a
lateral tube forming a main/lateral connection liner.
3.2.12 lateral liner—Resin saturated liner tube used to
renew a lateral pipe.
3.2.13 main liner—Liner (CIPP or Folded liner) used to
FIG. 1 SMHG End Seal Sleeve renew a main pipe.
F3240 − 19 (2023)
3.2.14 sectional liner—CIPP installed in a portion of the pipe by one end of the sheet overlapping a second end. The
main or lateral pipe for repairing a localized defect or a section SMHG Lateral Cap shall be centered with the lateral opening.
of the pipe.
4.1.5 Applicable ASTM standards or manufacturer’s
recommendations, or both, shall govern the installation proce-
3.2.15 inverting liner—A liner that progresses through a
dures for the various CIPP rehabilitation methods.
pipe by turning inside out.
3.2.16 leading edge—the edge of the SMHG End Seal
5. Significance and Use
Sleeve that faces the direction of liner installation.
5.1 This practice is for use by designers and specifiers,
3.2.17 watertight—for the purposes of this standard, the
regulatory agencies, owners, and inspection organizations that
SMHG shall not allow water to pass through or around the
are involved in the rehabilitation of main and lateral pipelines
gaskets at head pressures up to 10 psi.
and manholes. As for any practice, modifications may be
required for specific job conditions.
4. Summary of Practice
4.1 This is a practice for materials and the installation of a
6. Materials
gasket having specific hydrophilic properties, positioned be-
6.1 Seamless Molded Hydrophilic Gasket (SMHG):
tween the host pipe and the liner, which has been seamlessly
6.1.1 The SMHGs shall be made with Neoprene rubber
molded into various shapes for specific applications relating to
having hydrophilic properties. The gaskets shall be submerged
sewer pipeline renovation such as an elongated end seal sleeve,
in water for a maximum of 14 days and demonstrate a
a flange having a tubular portion extending therefrom to form
minimum of 800 % expansion by volume. An ISO 17025
a connection seal, and, O-Rings connected to a liner. The
accredited testing facility shall perform the testing.
purpose of the molded gaskets is to form a long-term watertight
6.1.2 The SMHGs shall be subjected to a 10 000-hour
seal when a sewer pipeline is being renovated to prevent
hydration/dehydration test performed by an ISO 17025 accred-
leakage otherwise known as infiltration and exfiltration.
ited testing facility. The test shall include submerging the
4.1.1 The SMHG End Seal Sleeve is positioned at the
gaskets in water for a period of 2, 7, 30, 90, 180 and 416 days
upstream and downstream ends of a main pipe section typically
then removed, measured, and weighed. The gaskets shall
6 in. from a manhole connection prior to the Main Liner
remain out of water for the same period of time as they were
installation. The SMHG End Seal Sleeve is held in place by a
submerged except for the 416 day interval. This process is
mechanical fastener. For large diameter pipe (diameter 18 in.
repeated until all samples within their respective cycles have
and larger), the sleeve and its fastener are held in place by
been tested for 10 000 h. Results must show that the SMHGs
anchor screws. Once the liner is installed and cured the SMHG
continue to stay flexible after the hydration cycles by bending
End Seal Sleeve shall remain positioned between the host pipe
the sample in half and observing no cracking. The SMHGs
and the CIPP at both ends of the main pipe within 6 in. of the
shall retain the ability to absorb water and swell and demon-
manhole. See Fig. 1.
strate a minimum weight increase of 800% for all periods.
4.1.2 The SMHG Connection Seal is attached to the Main/
6.1.3 The SMHGs shall have a Shore A Hardness of at least
Lateral Connection Liner after resin impregnation by two
45 when tested in accordance with Test Method D2240.
stainless steel snaps located on opposite sides of the SMHG
6.1.4 The SMHGs shall meet the requirements of Test
Connection Seal. The SMHG Connection Seal can be manu-
Method D1149, Test Method for Rubber Deterioration -
factured to fit a Tee or Wye connection. Once the liner is
Cracking in an Ozone Controlled Environment. The test results
installed and cured the SMHG Connection Seal shall remain
shall demonstrate no cracking. An ISO 17025 accredited
positioned between the host pipe and the CIPP at the main and
testing facility shall perform testing.
lateral connection. See Fig. 2.
6.1.5 The SMHG End Seal Sleeve shall have the following
4.1.3 The SMHG O-Rings are used to seal CIPP ends with
dimensions for the respective host pipe inside diameter (ID).
limited access, such as the upper end of a lateral liner inverted
See Table 1.
from the main pipe. See Fig. 3. Another use would be at the
6.1.6 The SMHG O-Ring shall have the following dimen-
upstream and downstream ends of a sectional CIPP located in
sions for the respective host pipe inside diameter (ID).
a main pipe or in a lateral pipe. The SMHG O-Rings are
6.1.7 The SMHG Connection Seal shall have minimum
attached to an inverting liner near its terminating ends before
values for the thickness, flange width, and length of tubular
resin impregnation. See Fig. 4 SMHG. When a SMHG
portion of 0.125 in., 2.5 in., and 1.6 in. respectively. The
Connection Seal is not used SMHG O-Rings shall be placed
SMHG Connection Seal shall be molded in either a Wye or Tee
around flat sheet liners that are formed into a tube by wrapping
configuration and in a manner in which it creates a circular or
the sheet around an inflatable plug. Once the liner is installed
elliptical shape in the portion that extends into the lateral when
and cured the SMHG O-Rings shall remain positioned between
the flange portion is forced to curve around the CIPP. The
the host pipe and the CIPP liner. See Fig. 3 and Fig. 4.
SMHG Connection Seal will conform to the curvature of main
4.1.4 The SMHG Lateral Cap is attached to a short liner
pipes from 6 in. diameter and larger.
that is formed from a flat sheet of resin absorbent material
6.1.8 The SMHG Lateral Cap shall be a circular disk with
suitable for CIPP. The forming of the tube is accomplished
a thickness of 2.5 mm and a diameter of 12 in.
using a textile sheet 24 in. in length and a width sufficient to
create a circular lining equal to the inner diameter of the main 6.2 Mechanical Fastener for End Seal Sleeve:
F3240 − 19 (2023)
TABLE 1 SMHG End Seal Sleeve Dimensions
main pipe shall be cleaned to remove all debris, deposits larger
SMHG End Seal Sleeves End than ⁄2 in. (1.3 cm) in diameter and visible grease deposits.
Host Pipe ID Seal ID Width Thickness
The metal retaining clip shall then be placed at the leading edge
(in.) (in.) (in.) (in.)
inside the sleeve. An adhesive tape may be applied to the outer
6 5.6 3.5 0.06
8 7.5 3.5 0.08 surface of the metal retaining clip
...
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