ASTM F2561-20

Standard Practice for Rehabilitation of a Sewer Service Lateral and Its Connection to the Main Using a One Piece Main and Lateral Cured-in-Place Liner

SIGNIFICANCE AND USE
4.1 This practice is for use by designers and specifiers, regulatory agencies, owners, and inspection organizations who are involved in the rehabilitation of sewer service laterals and its connection to the main through the use of a resin-impregnated tube installed within an existing sewer lateral. As for any practice, modifications may be required for specific job conditions.
SCOPE
1.1 This practice covers requirements and test methods for the reconstruction of a sewer service lateral pipe having an inner diameter of 3 to 12 in. (7.6 to 30.5 cm) and its connection to the main pipe having an inner diameter of 6 to 24 in. (15.2 to 61.0 cm) and up the lateral a maximum of 150 ft (46 m) without excavation. The lateral pipe is accessed remotely from the main pipe and from a lateral access point. This will be accomplished by the installation of a resin impregnated one-piece main and lateral cured-in-place lining (MLCIPL) by means of air inflation and inversion. The MLCIPL is pressed against the host pipe by pressurizing a bladder and is held in place until the thermoset resins have cured. When cured, the MLCIPL shall be a continuous, one piece, tight fitting, corrosion resistant lining extending over a predetermined length of the lateral pipe and the adjacent section of the main pipe, providing a verifiable non-leaking structural connection and seal.  
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

• Status: Published
• Publication Date: 29-Feb-2020
• ICS: 93.030 - External sewage systems
• Technical Committee: F17 - Plastic Piping Systems
• Drafting Committee: F17.67 - Trenchless Plastic Pipeline Technology

Relations

• Replaces: ASTM F2561-17 - Standard Practice for Rehabilitation of a Sewer Service Lateral and Its Connection to the Main Using a One Piece Main and Lateral Cured-in-Place Liner
• Effective Date: 01-Mar-2020
• Refers: ASTM F3240-19(2023) - Standard Practice for Installation of Seamless Molded Hydrophilic Gaskets (SMHG) for Long-Term Watertightness of Cured-in-Place Rehabilitation of Main and Lateral Pipelines
• Effective Date: 01-Dec-2023
• Refers: ASTM F412-20 - Standard Terminology Relating to Plastic Piping Systems
• Effective Date: 01-Apr-2020
• Refers: ASTM F3240-19e1 - Standard Practice for Installation of Seamless Molded Hydrophilic Gaskets (SMHG) for Long-Term Watertightness of Cured-in-Place Rehabilitation of Main and Lateral Pipelines
• Effective Date: 15-Sep-2019
• Refers: ASTM F3240-19 - Standard Practice for Installation of Seamless Molded Hydrophilic Gaskets (SMHG) for Long-Term Watertightness of Cured-in-Place Rehabilitation of Main and Lateral Pipelines
• Effective Date: 15-Sep-2019
• Refers: ASTM D2290-19a - Standard Test Method for Apparent Hoop Tensile Strength of Plastic or Reinforced Plastic Pipe
• Effective Date: 01-Aug-2019
• Refers: ASTM D2290-19 - Standard Test Method for Apparent Hoop Tensile Strength of Plastic or Reinforced Plastic Pipe
• Effective Date: 01-Jan-2019
• Refers: ASTM F412-19 - Standard Terminology Relating to Plastic Piping Systems
• Effective Date: 01-Jan-2019
• Refers: ASTM D5813-04(2018) - Standard Specification for Cured-In-Place Thermosetting Resin Sewer Piping Systems
• Effective Date: 01-Oct-2018
• Refers: ASTM D1600-18 - Standard Terminology for Abbreviated Terms Relating to Plastics (Withdrawn 2024)
• Effective Date: 01-Jan-2018
• Refers: ASTM F3240-17 - Standard Practice for Installation of Seamless Molded Hydrophilic Gaskets (SMHG) for Long-Term Watertightness of Cured-in-Place Rehabilitation of Main and Lateral Pipelines
• Effective Date: 15-Nov-2017
• Refers: ASTM F412-17a - Standard Terminology Relating to Plastic Piping Systems
• Effective Date: 01-Aug-2017
• Refers: ASTM D790-17 - Standard Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials
• Effective Date: 01-Jul-2017
• Refers: ASTM F412-17 - Standard Terminology Relating to Plastic Piping Systems
• Effective Date: 01-Feb-2017
• Refers: ASTM F412-16a - Standard Terminology Relating to Plastic Piping Systems
• Effective Date: 15-Nov-2016

Overview

ASTM F2561-20 is the Standard Practice for Rehabilitation of a Sewer Service Lateral and Its Connection to the Main Using a One Piece Main and Lateral Cured-in-Place Liner. Developed by ASTM International, this standard delivers a comprehensive framework for reconstructing sewer service lateral pipes and their connections to mainlines without the need for excavation. The practice utilizes a resin-impregnated, one-piece main and lateral cured-in-place lining (MLCIPL) installed by air inflation and inversion, providing a continuous, corrosion-resistant, and watertight solution.

Designed for pipe diameters of 3 to 12 inches (lateral) and 6 to 24 inches (main), and installation lengths up to 150 feet, the standard is used by designers, specifiers, utility owners, and regulatory and inspection agencies involved in sewer pipeline rehabilitation projects.

Key Topics

• Non-invasive Rehabilitation: The standard specifies methods for reconstructing pipes remotely via access points, eliminating the need for open excavation.
• Cured-in-Place Pipe (CIPP) Technology: Details requirements for use of resin-impregnated textile liners that cure in place, forming a durable, tight-fitting interior pipe lining.
• Structural and Chemical Resistance: Emphasizes the need for liners to be corrosion-resistant and to meet minimum flexural strength and modulus requirements, ensuring long-term performance.
• Sealing Connections: Outlines the use of seamless molded hydrophilic gaskets or O-rings to achieve watertight sealing between the main pipe and service lateral.
• Inspection and Testing: Recommends visual inspection, closed-circuit television (CCTV), air leakage testing, and sample analysis to verify liner placement, integrity, and watertightness.
• Material and Installation: Includes specifications for textile liner materials, resin types (polyester, vinyl ester, epoxy, silicate), resin wet-out, and thermal curing processes.

Applications

ASTM F2561-20 is widely adopted for municipal, commercial, industrial, and residential sewer infrastructure projects, offering the following advantages:

• Trenchless Sewer Rehabilitation: Enables the restoration of damaged or deteriorating sewer service laterals and connections to mainlines without disruptive excavations, minimizing surface and environmental impact.
• Long-Term Performance Upgrades: Delivers structural reinforcement and corrosion resistance, enhancing the service life and reliability of existing underground pipes.
• Regulatory Compliance: Assists municipalities, utilities, and contractors in meeting regulatory standards for sewer line rehabilitation, reducing infiltration and exfiltration risks.
• Quality Assurance: Mandates thorough pre- and post-installation inspections, as well as leak testing and material verification for accountability and reliable results.
• Minimal Service Disruption: Allows fast liner installation and curing, reducing service interruptions for property owners and the public.

Related Standards

Several ASTM and industry standards are referenced within ASTM F2561-20 to ensure a cohesive rehabilitation process:

• ASTM D5813 - Specification for Cured-In-Place Thermosetting Resin Sewer Piping Systems
• ASTM F1216 - Practice for Inversion and Curing of Resin-Impregnated Tube for Pipeline Rehabilitation
• ASTM F3240 - Practice for Seamless Molded Hydrophilic Gaskets in CIPP Applications
• ASTM D618, D790, D1600, D2290, D3681 - Various methods for conditioning, testing, and defining materials and performance for plastic and reinforced pipes
• ASTM F3097 - Practice for Installation of Cleanouts via Minimally Invasive Excavation
• NASSCO Guidelines - Recommended Specifications for Sewer Collection System Rehabilitation

These referenced standards support consistent terminology, testing methods, material performance, gaskets installation, and quality assurance, ensuring compatibility and reliability across CIPP sewer rehabilitation projects.

---

Keywords: ASTM F2561-20, CIPP, cured-in-place pipe, sewer lateral rehabilitation, trenchless technology, main-lateral connection, hydrophilic gasket, pipe lining standard, sewer pipe relining, infrastructure renewal, resin-impregnated liner.

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: F2561 − 20
Standard Practice for
Rehabilitation of a Sewer Service Lateral and Its Connection
to the Main Using a One Piece Main and Lateral Cured-in-
1,2
Place Liner
This standard is issued under the fixed designation F2561; 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* 1.3 There is no similar or equivalent ISO Standard.
1.4 This standard does not purport to address all of the
1.1 This practice covers requirements and test methods for
safety concerns, if any, associated with its use. It is the
the reconstruction of a sewer service lateral pipe having an
responsibility of the user of this standard to establish appro-
innerdiameterof3to12in.(7.6to30.5cm)anditsconnection
priate safety, health, and environmental practices and deter-
to the main pipe having an inner diameter of 6 to 24 in. (15.2
mine the applicability of regulatory limitations prior to use.
to 61.0 cm) and up the lateral a maximum of 150 ft (46 m)
1.5 This international standard was developed in accor-
without excavation. The lateral pipe is accessed remotely from
dance with internationally recognized principles on standard-
the main pipe and from a lateral access point. This will be
ization established in the Decision on Principles for the
accomplished by the installation of a resin impregnated one-
Development of International Standards, Guides and Recom-
piece main and lateral cured-in-place lining (MLCIPL) by
mendations issued by the World Trade Organization Technical
means of air inflation and inversion. The MLCIPL is pressed
Barriers to Trade (TBT) Committee.
against the host pipe by pressurizing a bladder and is held in
place until the thermoset resins have cured. When cured, the
2. Referenced Documents
MLCIPL shall be a continuous, one piece, tight fitting, corro-
2.1 ASTM Standards:
sion resistant lining extending over a predetermined length of
D618 Practice for Conditioning Plastics for Testing
the lateral pipe and the adjacent section of the main pipe,
D790 Test Methods for Flexural Properties of Unreinforced
providing a verifiable non-leaking structural connection and
and Reinforced Plastics and Electrical Insulating Materi-
seal.
als
1.2 The values stated in inch-pound units are to be regarded
D1600 Terminology forAbbreviatedTerms Relating to Plas-
as standard. The values given in parentheses are mathematical
tics
conversions to SI units that are provided for information only
D2290 Test Method for Apparent Hoop Tensile Strength of
and are not considered standard.
Plastic or Reinforced Plastic Pipe
D3681 TestMethodforChemicalResistanceof“Fiberglass”
(Glass–Fiber–Reinforced Thermosetting-Resin) Pipe in a
This practice is under the jurisdiction of ASTM Committee F17 on Plastic
Deflected Condition
Piping Systems and is the direct responsibility of Subcommittee F17.67 on
D5813 Specification for Cured-In-Place Thermosetting
Trenchless Plastic Pipeline Technology.
Current edition approved March 1, 2020. Published April 2020. Originally
Resin Sewer Piping Systems
approved in 2006. Last previous edition approved in 2017 as F2561–17. DOI:
F412 Terminology Relating to Plastic Piping Systems
10.1520/F2561-20.
2 F1216 Practice for Rehabilitation of Existing Pipelines and
Therehabilitationofasewerservicelateralanditsconnectiontothemainusing
a one-piece main and lateral cured-in-place liner is covered by patents 6,994,118, Conduits by the Inversion and Curing of a Resin-
7,975,726,8,240,340,8,240,341,8,567,451,8,636,036,8,651,145,8,667,991,8,678,
Impregnated Tube
037,8,689,835,9,169,957,9,366,375,9,562,339,9,551,449,(LMKEnterprises,Inc.
1779 Chessie Lane, Ottawa, IL 61350). Interested parties are invited to submit
information regarding the identification of acceptable alternatives to this patented For referenced ASTM standards, visit the ASTM website, www.astm.org, or
item to the Committee on Standards, ASTM Headquarters, 100 Barr Harbor Drive, contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
West Conshohocken, PA 19428-2959. Your comments will receive careful consid- Standards volume information, refer to the standard’s Document Summary page on
eration at a meeting of the responsible technical committee which may attend. the ASTM website.
*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
F2561 − 20
F3097 Practice for Installation of an Outside Sewer Service 3.2.10 sheet—a flat textile sheet that is formed into a 16 in.
Cleanout through a Minimally Invasive Small Bore (40.6 cm) long tube within the main pipe. The sheet is
Vacuum Excavation connected to the lateral tube forming a one-pieceTEE orWYE
F3240 Practice for Installation of Seamless Molded Hydro- shaped fitting.
philic Gaskets (SMHG) for Long-Term Watertightness of
3.2.11 transition—the change in pipe diameter commonly
Cured-in-Place Rehabilitation of Main and Lateral Pipe-
found in lateral pipes.
lines
3.2.12 warranty period—the period of time that the manu-
2.2 NASSCO Guidelines:
facturer will guarantee the design life and service life of the
Recommended Specifications for Sewer Collection System
properly installed product.
Rehabilitation
4. Significance and Use
3. Terminology
4.1 This practice is for use by designers and specifiers,
3.1 Definitions—Unless otherwise indicated, definitions are
regulatory agencies, owners, and inspection organizations who
inaccordancewithTerminologyF412,andabbreviationsarein
are involved in the rehabilitation of sewer service laterals and
accordance with Terminology D1600.
its connection to the main through the use of a resin-
3.2 Definitions of Terms Specific to This Standard:
impregnated tube installed within an existing sewer lateral.As
3.2.1 access point—an existing manhole at either the up-
for any practice, modifications may be required for specific job
stream or downstream end of a sewer main or a cleanout or a
conditions.
pipe opening located on the lateral pipe.
5. Materials
3.2.2 bladder—a translucent flexible plastic hose that when
pressurized, causes the main sheet to be pressed against the
5.1 Tube and Sheet:
main pipe walls and the lateral tube to invert up into the sewer
5.1.1 The main sheet and lateral tube shall consist of one or
service lateral. The bladder joined with the textile lining
more layers of absorbent textile that is, needle punched felt or
creates a liner/bladder assembly.
circular knit that may contain fiberglass and meets the require-
ments of Practice F1216 and Specification D5813, Sections 6
3.2.3 inversion—the process of turning a resin-impregnated
and 8. The main sheet and lateral tube shall be constructed to
tube inside out by the use of air or water pressure.
withstand installation pressures and to have sufficient strength
3.2.4 launcher—combination of a rigid elongated tube and
to bridge missing pipe segments and flexibility to fit irregular
lay-flat hose apparatus where the main bladder is attached and
pipesections.Theassemblyofthetubeandmainsheetmustbe
the main sheet is wrapped around the exterior of the rigid
stitched and sealed. The interface of the main sheet and tube
portion. The lateral bladder and lateral tube are drawn inside
shall be vacuum tested with 10 in. of Mercury (Hg) by the
the hose. The launcher is positioned within the main pipe; air
manufacturer to verify a leak-free connection. The volume of
pressure is introduced into the hose causing inflation of the
resin used should be sufficient to fill all voids in the tube
main bladder/sheet and inversion of the lateral bladder tube.
material at nominal thickness and diameter. The wet-out main
3.2.5 lift—a portion of the MLCIPL that has cured in a
sheetandlateraltubeshallhaveauniformthicknessandexcess
position such that it has pulled away from the host pipe wall.
resin distribution that when compressed at installation
3.2.6 main and lateral cured-in-place lining (MLCIPL)—a
pressures, the MLCIPL will meet or exceed the design thick-
textile including plastic coating impregnated by a thermoset-
ness after cure.
ting resin. This pipe is formed within a portion of the existing
5.1.2 The outside layer of the tube (before inversion) and
main pipe and the lateral pipe. Therefore, it takes the shape of
the interior of the main sheet (before inflation) shall be coated
an existing TEE or WYE fitting and fits tightly to the existing
withanimpermeable,translucentflexiblemembrane.Themain
pipes.
sheet before insertion shall be permanently marked with a
lateral identification correlating to the address of the building
3.2.7 resin—polyester, vinyl ester, epoxy or silicate resin
that the lateral pipe services. In addition the manufacturers
systems being ambient, steam, hot water, or cured UV light.
material batch codes for the liner and the resin shall be marked
3.2.8 resin slug—excessresinataterminatingendofaCIPP
on the main sheet. The main sheet and lateral tube shall be
lateral lining.
surrounded by a second impermeable, flexible translucent
3.2.9 sewer service lateral—a pipe servicing a commercial,
membrane (translucent bladder) that will contain the resin and
industrial or residential building.
facilitate vacuum impregnation and monitoring of the resin
saturation during the resin impregnation (wet-out) procedure.
The Installation of an Outside Sewer Service Cleanout through a Minimally
5.1.3 The main sheet and lateral tube shall be a one-piece
Invasive Small Bore Vacuum Excavation is covered by patents 8,757,930 (LMK
assembly formed into the appropriate TEE or WYE shaped
Enterprises, Inc. 1779 Chessie Lane, Ottawa, IL 61350). Interested parties are
fitting. No intermediate or encapsulated elastomeric layers
invited to submit information regarding the identification of acceptable alternatives
shall be in the textile that may cause delamination in the
to this patented item to the Committee on Standards,ASTM Headquarters, 100 Barr
Harbor Drive, West Conshohocken, PA 19428-2959. Your comments will receive
cured-in-place pipe. The main sheet will be flat with one end
carefulconsiderationatameetingoftheresponsibletechnicalcommitteewhichmay
overlapping the second end and sized accordingly to create a
attend.
circular lining equal to the inner diameter of the main pipe. A
Available from NASSCO, Inc. 2470 Longstone Lane Suite M, Marriottsville,
MD 21104. www.nassco.org 2 in. (5.2 cm) strip of uncoated felt shall be sewn on to one end
F2561 − 20
oftheflatsheet.Whensaturatedwithresinandwrappedaround
the launcher and then inflated the felt strip overlaps the flat
sheet to allow resin on resin contact and form a complete circle
pressed against the main sewer pipe. The lateral tube will be
continuous in length and the wall thickness shall be uniform.
5.2 Resin:
5.2.1 Fordesignpurposesa50-yeartime-dependentflexural
modulus shall be determined in accordance with D2290 with a
minimum test duration of 10 000 h.
5.2.2 Materials containing fiberglass shall meet the require-
ments of Specification D5813, Section 8.2.2.
5.2.3 The resin shall be a corrosion resistant polyester, vinyl
ester, epoxy or silicate resin and catalyst system that when
properly cured within the composite pipe assembly, meets the
FIG. 2 SMHG Connection Seal
requirements of Practice F1216, the physical properties herein,
andthose,whicharetobeutilizedinthedesignoftheMLCIPL
for this project.
5.2.4 TheresinshallproduceaMLCIPL,whichwillcomply
with the structural and chemical resistance requirements of
Practice F1216.
5.3 Seamless Molded Hydrophilic Gaskets: (SMHG)
5.3.1 All of the Seamless Molded Hydrophilic Gaskets
required for the MLCIPL must conform to Practice F3240,
Section 6.
5.3.2 The lateral tube shall include two SMHG O-rings
attached to the interior surface at the tail end of the tube
(upstreamsideofthelateral).OneO-ringshallbeattached4in.
FIG. 3 SMHG O-rings on Main Sheet
(10.2 cm) inches from the end of the liner and the other shall
be attached 6 in. (15 cm) from the end of the liner.The O-rings
shallbeattachedtothelinerinaccordancewithPracticeF3240
6. Design Considerations
section 7.2.3.2. See Fig. 1.
6.1 The MLCIPL shall be designed in accordance with
5.3.3 The MLCIPL shall include an SMHG Connection
Practice F1216, Appendix X1, with respect to the lateral tube
Seal. The Connection Seal shall be attached to the main/lateral
andmainsheetformedintotubes.Ifthemainlinepipehasbeen
liner after the resin saturation process by stainless steel snaps,
renewed with a structural lining, then the mainline portion of
Velcro®, or other mechanical means that prevent it from being
the MLCIPL is designed only for hydrostatic buckling.
detached from the main/lateral liner according to Practice
6.1.1 The design for the main sheet and lateral tube shall
F3240 Section 7.2.2.2. See Fig. 2.
assume no bonding to the host pipe.
5.3.4 In lieu of the SMHG Connection Seal, (4) four
SMHG O-rings shall be used to seal the connection. Two
7. Installation Recommendations
O-rings shall be placed on each side of the connection on the
7.1 Access Safety—Prior to entering access areas such as
mainsheet according to Practice F3240 Section 7.2.2.3 and
manholes or an excavation pit, performing inspection, or
Table 2. See Fig. 3 showing typical placement of the O-rings.
cleaning operations, an evaluation of the atmosphere to deter-
mine the presence of toxic or flammable vapors or lack of
oxygen shall be undertaken in accordance with local, state, or
federal safety regulations.
7.1.1 Cleaning and Pre-Inspection and Post Inspection, in
accordance with NASSCO (National Association of Sewer
Service Companies) Guidelines.
7.1.2 Accessing the Lateral—The access point shall be
located outside of the building and upstream at the upper
terminating end of the finished lateral lining. In order to access
both the upstream and downstream sides of the lateral pipe, it
is recommended that the access point is TEE shaped where the
lateral and riser pipe join.TheTee serves the purpose of access
for CCTV and proper maintenance for both the upstream and
downstreamside.Oneapprovedmethodofprovidinganaccess
FIG. 1 SMHG O-Rings on Lateral Tube point is described in Practice F3097. See Fig. 4.
F2561 − 20
volume due to polymerization and to allow
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: F2561 − 17 F2561 − 20
Standard Practice for
Rehabilitation of a Sewer Service Lateral and Its Connection
to the Main Using a One Piece Main and Lateral Cured-in-
1,2
Place Liner
This standard is issued under the fixed designation F2561; 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*
1.1 This practice covers requirements and test methods for the reconstruction of a sewer service lateral pipe having an inner
diameter of 3 to 12 in. (7.6 to 30.5 cm) and its connection to the main pipe having an inner diameter of 6 to 24 in. (15.2 to 61.0
cm) and up the lateral a maximum of 150 ft (46 m) without excavation. The lateral pipe is accessed remotely from the main pipe
and from a lateral access point. This will be accomplished by the installation of a resin impregnated one-piece main and lateral
cured-in-place lining (MLCIPL) by means of air inflation and inversion. The MLCIPL is pressed against the host pipe by
pressurizing a bladder and is held in place until the thermoset resins have cured. When cured, the MLCIPL shall be a continuous,
one piece, tight fitting, corrosion resistant lining extending over a predetermined length of the lateral pipe and the adjacent section
of the main pipe, providing a verifiable non-leaking structural connection and seal.
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 Warning—Mercury has been designated by many regulatory agencies as a hazardous substance that can cause serious
medical issues. Mercury, or its vapor, has been demonstrated to be hazardous to health and corrosive to materials. Caution should
be taken when handling mercury and mercury-containing products. See the applicable product Safety Data Sheet (SDS) for
additional information. Users should be aware that selling mercury or mercury-containing products, or both, may be prohibited by
local or national law.
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.
2. Referenced Documents
2.1 ASTM Standards:
D618 Practice for Conditioning Plastics for Testing
D790 Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials
D1600 Terminology for Abbreviated Terms Relating to Plastics
D2290 Test Method for Apparent Hoop Tensile Strength of Plastic or Reinforced Plastic Pipe
This practice is under the jurisdiction of ASTM Committee F17 on Plastic Piping Systems and is the direct responsibility of Subcommittee F17.67 on Trenchless Plastic
Pipeline Technology.
Current edition approved Dec. 1, 2017March 1, 2020. Published January 2018April 2020. Originally approved in 2006. Last previous edition approved in 20162017 as
F2561–16.–17. DOI: 10.1520/F2561-17.10.1520/F2561-20.
The rehabilitation of a sewer service lateral and its connection to the main using a one-piece main and lateral cured-in-place liner 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 Enterprises, Inc. 1779
Chessie Lane, Ottawa, IL 61350). Interested parties are invited to submit information regarding the identification of acceptable alternatives to this patented item to the
Committee on Standards, ASTM Headquarters, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959. Your comments will receive careful consideration at a meeting
of the responsible technical committee which may attend.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*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
F2561 − 20
D3681 Test Method for Chemical Resistance of “Fiberglass” (Glass–Fiber–Reinforced Thermosetting-Resin) Pipe in a Deflected
Condition
D5813 Specification for Cured-In-Place Thermosetting Resin Sewer Piping Systems
F412 Terminology Relating to Plastic Piping Systems
F1216 Practice for Rehabilitation of Existing Pipelines and Conduits by the Inversion and Curing of a Resin-Impregnated Tube
F3097 Practice for Installation of an Outside Sewer Service Cleanout through a Minimally Invasive Small Bore Vacuum
Excavation
F3240 Practice for Installation of Seamless Molded Hydrophilic Gaskets (SMHG) for Long-Term Watertightness of
Cured-in-Place Rehabilitation of Main and Lateral Pipelines
2.2 NASSCO Guidelines:
Recommended Specifications for Sewer Collection System Rehabilitation
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 access point—an existing manhole at either the upstream or downstream end of a sewer main or a cleanout or a pipe
opening located on the lateral pipe.
3.2.2 bladder—a translucent flexible plastic hose that when pressurized, causes the main sheet to be pressed against the main
pipe walls and the lateral tube to invert up into the sewer service lateral. The bladder joined with the textile lining creates a
liner/bladder assembly.
3.2.3 inversion—the process of turning a resin-impregnated tube inside out by the use of air or water pressure.
3.2.4 launcher—combination of a rigid elongated tube and lay-flat hose apparatus where the main bladder is attached and the
main sheet is wrapped around the exterior of the rigid portion. The lateral bladder and lateral tube are drawn inside the hose. The
launcher is positioned within the main pipe; air pressure is introduced into the hose causing inflation of the main bladder/sheet and
inversion of the lateral bladder tube.
3.2.5 lift—a portion of the MLCIPL that has cured in a position such that it has pulled away from the host pipe wall.
3.2.6 main and lateral cured-in-place lining (MLCIPL)—a textile including plastic coating impregnated by a thermosetting
resin. This pipe is formed within a portion of the existing main pipe and the lateral pipe. Therefore, it takes the shape of an existing
TEE or WYE fitting and fits tightly to the existing pipes.
3.2.7 resin—polyester, vinyl ester, epoxy or silicate resin systems being ambient, steam, hot water, or cured UV light.
3.2.8 resin slug—excess resin at a terminating end of a CIPP lateral lining.
3.2.9 sewer service lateral—a pipe servicing a commerical,commercial, industrial or residential building.
3.2.10 sheet—a flat textile sheet that is formed into a 16 in. (40.6 cm) long tube within the main pipe. The sheet is connected
to the lateral tube forming a one-piece TEE or WYE shaped fitting.
3.2.11 transition—the change in pipe diameter commonly found in lateral pipes.
3.2.12 warranty period—the period of time that the manufacturer will guarantee the design life and service life of the properly
installed product.
4. Significance and Use
4.1 This practice is for use by designers and specifiers, regulatory agencies, owners, and inspection organizations who are
involved in the rehabilitation of sewer service laterals and its connection to the main through the use of a resin-impregnated tube
installed within an existing sewer lateral. As for any practice, modifications may be required for specific job conditions.
5. Materials
5.1 Tube and Sheet:
5.1.1 The main sheet and lateral tube shall consist of one or more layers of absorbent textile that is, needle punched felt or
circular knit that meet may contain fiberglass and meets the requirements of Practice F1216 and Specification D5813, Sections 6
and 8. The main sheet and lateral tube shall be constructed to withstand installation pressures and to have sufficient strength to
bridge missing pipe segments and flexibility to fit irregular pipe sections. The assembly of the tube and main sheet must be stitched
The Installation of an Outside Sewer Service Cleanout through a Minimally Invasive Small Bore Vacuum Excavation is covered by patents 8,757,930 (LMK Enterprises,
Inc. 1779 Chessie Lane, Ottawa, IL 61350). Interested parties are invited to submit information regarding the identification of acceptable alternatives to this patented item
to the Committee on Standards, ASTM Headquarters, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959. Your comments will receive careful consideration at a
meeting of the responsible technical committee which may attend.
Available from NASSCO, Inc. 11521 Cronridge Drive, Suite J, Owings Mills, MD 21117.2470 Longstone Lane Suite M, Marriottsville, MD 21104. www.nassco.org
F2561 − 20
and sealed. The interface of the main sheet and tube shall be vacuum tested with 10 in. of Mercury (Hg) by the manufacturer to
verify a leak-free connection. The volume of resin used should be sufficient to fill all voids in the tube material at nominal thickness
and diameter. The wet-out main sheet and lateral tube shall have a uniform thickness and excess resin distribution that when
compressed at installation pressures, the MLCIPL will meet or exceed the design thickness after cure.
5.1.2 The outside layer of the tube (before inversion) and the interior of the main sheet (before inflation) shall be coated with
an impermeable, translucent flexible membrane. The main sheet before insertion shall be permanently marked with a lateral
identification correlating to the address of the building that the lateral pipe services. In addition the manufacturers material batch
codes for the liner and the resin shall be marked on the main sheet. The main sheet and lateral tube shall be surrounded by a second
impermeable, flexible translucent membrane (translucent bladder) that will contain the resin and facilitate vacuum impregnation
and monitoring of the resin saturation during the resin impregnation (wet-out) procedure.
5.1.3 The main sheet and lateral tube shall be a one-piece assembly formed as a into the appropriate TEE or WYE shaped fitting.
No intermediate or encapsulated elastomeric layers shall be in the textile that may cause delamination in the cured-in-place pipe.
The main sheet will be flat with one end overlapping the second end and sized accordingly to create a circular lining equal to the
inner diameter of the main pipe. The lateral tube will be continuous in length and the wall thickness shall be uniform. The lateral
tube shall include a hydrophilic O-ring attached to the interior surface at the tail A 2 in. (5.2 cm) strip of uncoated felt shall be
sewn on to one end of the tube. One O-ring shall be attached four inches from the end of the liner and the other shall be attached
six inches from the end of the liner. flat sheet. When saturated with resin and wrapped around the launcher and then inflated the
felt strip overlaps the flat sheet to allow resin on resin contact and form a complete circle pressed against the main sewer pipe.
The lateral tube will be capable of conforming to offset joints, bells, and disfigured pipe sections.continuous in length and the wall
thickness shall be uniform.
5.2 Resin:
5.2.1 The resin/liner system shall conform to Test Method For design purposes a 50-year time-dependent flexural modulus shall
be determined in accordance with D3681D2290, 10 000-h test. with a minimum test duration of 10 000 h.
5.2.2 Materials containing fiberglass shall meet the requirements of Specification D5813, Section 8.2.2.
5.2.3 The resin shall be a corrosion resistant polyester, vinyl ester, epoxy or silicate resin and catalyst system that when properly
cured within the composite pipe assembly, meets the requirements of Practice F1216, the physical properties herein, and those,
which are to be utilized in the design of the MLCIPL for this project.
5.2.4 The resin shall produce a MLCIPL, which will comply with the structural and chemical resistance requirements of Practice
F1216.
5.3 Seamless Molded Hydrophilic Gaskets: (SMHG)
5.3.1 All of the Seamless Molded Hydrophilic Gaskets required for the MLCIPL must conform to Practice F3240, Section 6.
5.3.2 The lateral tube shall include two SMHG O-rings attached to the interior surface at the tail end of the tube (upstream side
of the lateral). One O-ring shall be attached 4 in. (10.2 cm) inches from the end of the liner and the other shall be attached 6 in.
(15 cm) from the end of the liner. The O-rings shall be attached to the liner in accordance with Practice F3240 section 7.2.3.2. See
Fig. 1.
5.3.3 The MLCIPL shall include an SMHG Connection Seal. The Connection Seal shall be attached to the main/lateral liner
after the resin saturation process by stainless steel snaps, Velcro®, or other mechanical means that prevent it from being detached
from the main/lateral liner according to Practice F3240 Section 7.2.2.2. See Fig. 2.
5.3.4 In lieu of the SMHG Connection Seal, (4) four SMHG O-rings shall be used to seal the connection. Two O-rings shall
be placed on each side of the connection on the mainsheet according to Practice F3240 Section 7.2.2.3 and Table 2. See Fig. 3
showing typical placement of the O-rings.
FIG. 1 SMHG O-Rings on Lateral Tube
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FIG. 2 SMHG Connection Seal
FIG. 3 Flanged Shaped GasketSMHG O-rings on Main Sheet
6. Design Considerations
6.1 The MLCIPL shall be designed in accordance with Practice F1216, Appendix X1, with respect to the lateral tube and main
line sheet formed into tubes. If the mainline pipe has been renewed with a structural lining from manhole to manhole, lining, then
the mainline portion of the MLCIPL is designed only for hydrostatic buckling.
6.1.1 The design for the main sheet and lateral tube shall assume no bonding to the host pipe.
7. Installation Recommendations
7.1 Access Safety—Prior to entering access areas such as manholes or an excavation pit, performing inspection, or cleaning
operations, an evaluation of the atmosphere to determine the presence of toxic or flammable vapors or lack of oxygen shall be
undertaken in accordance with local, state, or federal safety regulations.
7.1.1 Cleaning and Pre-Inspection and Post Inspection, in accordance with NASSCO (National Association of Sewer Service
Companies) Guidelines.
7.1.2 Accessing the Lateral—The access point shall be located outside of the building and upstream at the upper terminating
end of the finished
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