ASTM F1741-08(2016)
(Practice)Standard Practice for Installation of Machine Spiral Wound Poly (Vinyl Chloride) (PVC) Liner Pipe for Rehabilitation of Existing Sewers and Conduits
Standard Practice for Installation of Machine Spiral Wound Poly (Vinyl Chloride) (PVC) Liner Pipe for Rehabilitation of Existing Sewers and Conduits
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 non-pressure sewers and conduits. Modifications may be required for specific job conditions.
SCOPE
1.1 This practice describes the procedures for the rehabilitation of sewer lines and conduits for existing pipelines 6 to 180 in. in diameter by the insertion of a machine-made field-fabricated spiral wound liner pipe into the existing pipeline using a winding machine which remains stationary in the insertion pit or, alternatively, which travels along the interior of the existing pipeline. These rehabilitation processes can be used in a variety of gravity applications such as sanitary sewers, storm sewers, culverts, and process piping.
1.1.1 When using stationary installation equipment for existing pipelines 6 to 48 in., after insertion, the spiral wound liner pipe is expanded until it presses against the interior surface of the existing pipeline. Alternatively, for existing pipelines 6 to 108 in. in diameter, the spiral wound liner pipe is inserted as a fixed diameter into the existing pipeline and is not expanded, and the annular space between the spiral wound liner pipe and the existing pipe is grouted.
1.1.2 When using the traveling installation equipment for existing pipelines 6 to 180 in. the spiral wound liner pipe is installed in contact with the interior surface of the existing pipeline to form a close fit liner, except in the corners of rectangular pipes or where obstructions or offsets occur. Alternatively, for existing pipelines 6 to 180 in. in diameter and for similar sized existing non circular pipelines such as arched or oval or rectangular shapes, the spiral wound liner is installed as a fixed diameter into the exiting pipeline to form a non-close fit liner and the annular space between the spiral wound liner pipe and the existing pipe is grouted.
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 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 and health practices and determine the applicability of regulatory limitations prior to use.
1.3.1 Particular attention is drawn to those safety regulations and requirements involving entering into and working in confined spaces.
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Designation:F1741 −08 (Reapproved 2016)
Standard Practice for
Installation of Machine Spiral Wound Poly (Vinyl Chloride)
(PVC) Liner Pipe for Rehabilitation of Existing Sewers and
Conduits
This standard is issued under the fixed designation F1741; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber 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 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
1.1 This practice describes the procedures for the rehabili-
responsibility of the user of this standard to establish appro-
tation of sewer lines and conduits for existing pipelines 6 to
priate safety and health practices and determine the applica-
180 in. in diameter by the insertion of a machine-made
bility of regulatory limitations prior to use.
field-fabricated spiral wound liner pipe into the existing
1.3.1 Particular attention is drawn to those safety regula-
pipeline using a winding machine which remains stationary in
tions and requirements involving entering into and working in
the insertion pit or, alternatively, which travels along the
confined spaces.
interior of the existing pipeline. These rehabilitation processes
canbeusedinavarietyofgravityapplicationssuchassanitary
2. Referenced Documents
sewers, storm sewers, culverts, and process piping.
2.1 ASTM Standards:
1.1.1 When using stationary installation equipment for ex-
C39/C39MTest Method for Compressive Strength of Cylin-
isting pipelines 6 to 48 in., after insertion, the spiral wound
drical Concrete Specimens
liner pipe is expanded until it presses against the interior
C109/C109MTest Method for Compressive Strength of
surface of the existing pipeline. Alternatively, for existing
Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube
pipelines 6 to 108 in. in diameter, the spiral wound liner pipe
Specimens)
is inserted as a fixed diameter into the existing pipeline and is
C495Test Method for Compressive Strength of Lightweight
not expanded, and the annular space between the spiral wound
Insulating Concrete
liner pipe and the existing pipe is grouted.
D883Terminology Relating to Plastics
1.1.2 When using the traveling installation equipment for
D1600TerminologyforAbbreviatedTermsRelatingtoPlas-
existing pipelines 6 to 180 in. the spiral wound liner pipe is
tics
installed in contact with the interior surface of the existing
F412Terminology Relating to Plastic Piping Systems
pipeline to form a close fit liner, except in the corners of
F1417Practice for Installation Acceptance of Plastic Non-
rectangular pipes or where obstructions or offsets occur.
pressure Sewer Lines Using Low-Pressure Air
Alternatively,forexistingpipelines6to180in.indiameterand
F1697Specification for Poly(Vinyl Chloride) (PVC) Profile
for similar sized existing non circular pipelines such as arched
StripforMachineSpiral-WoundLinerPipeRehabilitation
orovalorrectangularshapes,thespiralwoundlinerisinstalled
of Existing Sewers and Conduit
asafixeddiameterintotheexitingpipelinetoformanon-close
2.2 Uni-Bell Standard:
fit liner and the annular space between the spiral wound liner
UNI-B-5-89 Recommended Practice for the Installation of
pipe and the existing pipe is grouted. 3
PVC Sewer Pipe
1.2 Thevaluesstatedininch-poundunitsaretoberegarded
3. Terminology
as standard. The values given in parentheses are mathematical
3.1 General—DefinitionsareinaccordancewithTerminolo-
conversions to SI units that are provided for information only
and are not considered standard. gies D883 and F412. Abbreviations are in accordance with
Terminology D1600, unless otherwise indicated.
1 2
This practice is under the jurisdiction of ASTM Committee F17 on Plastic For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Piping Systems and is the direct responsibility of Subcommittee F17.67 on contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Trenchless Plastic Pipeline Technology. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved May 1, 2016. Published May 2016. Originally the ASTM website.
approved in 1996. Last previous edition approved in 2008 as F1741–08. DOI: Available from Uni-Bell, 2655Villa Creek Drive, Suite 155, DallasTX 75234.
10.1520/F1741-08R16.
*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
F1741−08 (2016)
3.2 Definitions of Terms Specific to This Standard: 5.2 The profile strip should be coiled onto a reel in a
3.2.1 extruded PVC profile strip—a product available in continuous length for storage and shipping to the job site.
various widths, consisting of a smooth inside surface and a Handling and storage should be in accordance with the
ribbedoutersurfacewithmechanicallylockedmaleandfemale manufacturer’s published recommendations.
edges which are self interlocking, or separate locking strips
5.3 The adhesive or sealants, or both, used with the male
which serve the same purposeTypeAandType B are different
and female mechanical locking elements should be compatible
profiles and are installed by different installation methods. See
with the PVC compound and the spiral wound liner pipe
Fig. 1 and Table 1 for TypeAand Fig. 2 and Table 2 for Type
process so as not to affect the properties of the spiral wound
B. See Fig. 1 and Fig. 3 for installation method forTypeAand
finished liner pipe.
Fig. 2 and Fig. 4 for installation method for Type B.
5.4 Thesteelreinforcingstripsshallbeusedtoreinforcethe
3.2.2 insertion point—an existing manhole, existing access
extruded PVC profile strip, where the design conditions re-
shaft,orexcavatedpitthatservesasthepointwhereawinding
quires additional stiffness, such as for non-circular shaped
machine field fabricates the spiral wound liner pipe and
pipes.
simultaneously inserts the spiral wound liner pipe into the
existing pipeline.
6. Installation Recommendations
3.2.3 non-circular pipe—arched, oval or rectangular or a
6.1 Cleaning and Inspection:
combination thereof.
6.1.1 Prior to entering access areas such as manholes and
3.2.4 production run—a continuous extrusion of a given
performing inspection or cleaning operations, an evaluation of
profile type.
theatmospheretodeterminethepresenceoftoxicorflammable
3.2.5 spiral wound liner pipe—a product field fabricated
vapors or lack of oxygen must be undertaken in accordance
from extruded PVC profile strip to a round shape, or noncir-
with local, state, or federal safety regulations .
cularshape,suchasarchedorovalorrectangular.(SeeFig.5.)
6.1.2 Cleaning of Pipeline—Internal debris should be re-
moved from the existing pipeline. Gravity pipes should be
3.2.6 steel reinforcement— a shaped steel strip or clip
cleaned with hydraulically powered equipment, high-velocity
insertedintotheinsideofthePVCprofiletoprovideadditional
jetcleaners,ormechanicallypoweredequipmentinaccordance
reinforcement and stiffening. (See Fig. 3 and Fig. 4.)
with NASSCO recommended specifications.
3.2.7 termination point—an existing manhole, existing ac-
6.1.3 Inspection of Pipelines—Inspection of pipelines
cessshaft,oranexcavatedpitthatservesasthepointofexitof
should be performed by experienced personnel trained in
the spiral wound liner pipe from the existing pipe.
locating breaks, obstacles, and service connections by closed-
circuit television or by direct visual inspection. The interior of
4. Significance and Use
the pipeline should be carefully inspected to determine the
4.1 This practice is for use by designers and specifiers,
location of any conditions that may prevent proper installation
regulatory agencies, owners, and inspection organizations who
of the spiral wound liner pipe, such as protruding service taps,
are involved in the rehabilitation of non-pressure sewers and
collapsed or crushed pipe, out-of-roundness, significant line
conduits. Modifications may be required for specific job
sags, and deflected joints. These conditions should be noted
conditions.
and corrected, if necessary, prior to installation.
6.1.4 Line Obstructions—The existing pipeline should be
5. Materials
clear of obstructions that will prevent the proper insertion, and
5.1 The extruded profile strip used for the field fabrication expansion if required, of the spiral wound liner pipe. Obstruc-
of spiral wound liner pipe shall be in accordance with tions could include dropped or offset joints of more than
Specification F1697. 12.5% of inside pipe diameter, service connections that
NOTE 1—For values of width, height, and waterway minimum wall, see Table 1.
FIG. 1Type A-Typical PVC Profile Strip
F1741−08 (2016)
TABLE 1 Type A Typical Profile Strip Moments of Inertia and Stiffness Factors
C
Moment of Inertia, I Depth to Neutral Axis, y¯ Minimum Height, H Profile Area Minimum Stiffness Factor, EI
AB
Profile Type
4 4 2 2 3 2 3
in. /in. (mm /m) in. (mm) in. (mm) in. /in. (mm /mm) in. ·lbf/in. (MPa·mm )
1 0.00047 ( 7.70) 0.077 (1.98) 0.216 ( 5.5) 0.118 (3.00) 188.0 ( 21.2× 10 )
2 0.00140 ( 23.00) 0.130 (3.30) 0.314 ( 8.0) 0.146 (3.70) 561 ( 63.4× 10 )
3 0.00537 (88.00) 0.206 (5.24) 0.511 (13.0) 0.205 (5.20) 2148 (242.7 × 10 )
4 0.00386 ( 63.30) 0.200 (5.08) 0.480 (12.2) 0.125 (3.18) 1600.0 (180.8 × 10 )
5 0.00400 ( 65.50) 0.180 (4.57) 0.488 (12.4) 0.125 (3.18) 1600.0 (180.8 × 10 )
6 0.00400 ( 65.50) 0.180 (4.57) 0.488 (12.4) 0.125 (3.18) 1600.0 (180.8 × 10 )
A
Other profiles, possibly using supplementary stiffener elements, may be available. Consult the manufacturer.
B
The spacing of the ribs may vary for each profile type.
C
Stiffness factors listed are the minimum values that will be provided by the manufacturer for the given profile type.
FIG. 2 Type B-Typical PVC Profile Strip
TABLE 2 Type B Typical Profile Strip Moments of Inertia and Stiffness Factors
Moment of Inertia, I Depth to Neutral Axis, y¯ Minimum Height, H Profile Area Minimum Stiffness Factor, EI
Profile Type
4 4 2 2 3 2 3
in. /in. (mm /m) in. (mm) in. (mm) in. /in. (mm /mm) in. ·lbf/in. (MPa·mm )
1 0.00106 (17.43) . . 0.319 (8.10) 0.132 (3.36) 362.5 40955
2 0.00218 (35.80) 0.26 (6.56) 0.422 (10.71) 0.150 (3.80) 745.0 84127
3 0.00571 (93.58) 0.58 (14.67) 0.578 (14.67) 0.227 (5.76) 1946.3 219900
4 0.01165 (190.92) 0.76 (19.35) 0.762 (19.35) 0.290 (7.36) 3971.0 448656
5 0.04142 (678.68 ) 1.12 (28.53) 1.123 (28.53) 0.463 (11.75) 14116.0 1594900
6 0.00444 (72.78) 0.56 (14.22) 0.560 (14.22) 0.187 (4.76) 1513.8 171042
the condition of the existing pipe, the location of the bend
within the pipeline, and whether there are multiple bends. For
a determination of whether a given bend can be
accommodated, or whether access will be required for termi-
nation and start of a new insertion, consult the supplier of the
FIG. 3Shaped Steel Reinforcing Strip Type A
liner material. Depending on the method of installation used,
insertion and expansion, or fixed diameter, some changes in
pipe size along the insertion length of the spiral wound liner
pipe can be accommodated, and it is recommended that the
spiral wound liner pipe material supplier be contacted.
6.2 Bypassing—The spiral wound liner pipe process does
not require a dry pipeline and can be installed with some flow
intheexistingpipeorlateralconnections,orboth.Ifnecessary,
FIG. 4Shaped Steel Reinforcing Strip Type B
the bypass should be made by plugging the line at a point
upstream of the pipe to be reconstructed and pumping the flow
protrude into the pipe more than 12.5% of the inside pipe
to a downstream point or adjacent system. The pump and
diameter or 1-in. (25-mm), whichever is less; and other
bypass lines should be of adequate capacity and size to handle
obstructions in cross-sectional area of more than 16% based
any extreme flows expected during the installation period.
ontheinsidediameteroftheexistingpipe.Ifinspectionreveals
6.2.1 Under certain conditions, part or all of the installation
an obstruction that cannot be removed by conventional
may be carried out with some flow in the existing pipeline or
equipment, then a point repair excavation should be made to
service connections, or both.
uncoverandremoveorrepairtheobstruction.Theangleofany
6.3 Pipe Liner Fabrication and Insertion Using Stationary
bend along the pipeline that can be negotiated by the spiral
wound liner pipe depends on a combination of factors such as Installation Equipment:
F1741−08 (2016)
FIG. 5 Typical Spiral Wound Liner Pipe
6.3.1 A winding machine should be placed in the insertion 6), thus releasing the profile strip to slide freely along the
pitandorientedsothatthelinerpipecanbespirallywoundand primary rock when a torque is applied to the inserted spiral
inserted(rotatedandpushed)directlyintotheexistingpipeline. wound liner pipe. The winding operation should be
Areel of extruded PVC profile strip should be positioned near
recommenced,therebycreatingatorquewhichisappliedtothe
the insertion point.The initial winding process begins with the released end, thus causing a radial growth or expansion over
profile strip being fed into the winding machine, forming the
the released length of the spiral wound liner pipe. The initial
profile strip into the required spiral wound liner pipe diameter,
radialgrowthshouldbepermittedtocontinueuntilthereleased
which is simultaneously rotated and pushed along the existing
end of the spiral wound liner pipe is pressed against the
pipeline for its full length to the termination point. As the
existing pipeline (see Fig. 6), thus halting radially growth and
profile strip is formed into a spiral, wound liner pipe in the
torsionally restraining the spiral wound liner pipe. Subsequent
winding machine, the required sealant or adhesive, or both
secondary lock release and winding should continue until the
unless already in place, shall be placed within the primary and
spiral wound liner pipe is pressed against the full length of the
secondary locks of the locking configuration at the edge of the
existing pipe. The annular space between the expanded spiral
profile strip, and wire is placed between the primary and
wound liner pipe and the existing pipeline should be sealed at
secondary locks of the locking configuration when the spiral
the ends with a sealing material that is compatible with the
wound liner pipe is to be expanded (see Fig. 6 and Fig. 7).
spiral wound liner pipe material.
6.3.2 Whenthespiralwoundlinerpipeistobeexpandedas
6.4 Pipe Liner Fabrication Using Traveling Installati
...
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: F1741 − 08 F1741 − 08 (Reapproved 2016)
Standard Practice for
Installation of Machine Spiral Wound Poly (Vinyl Chloride)
(PVC) Liner Pipe for Rehabilitation of Existing Sewers and
Conduits
This standard is issued under the fixed designation F1741; 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 describes the procedures for the rehabilitation of sewer lines and conduits for existing pipelines 6 to 180 in.
in diameter by the insertion of a machine-made field-fabricated spiral wound liner pipe into the existing pipeline using a winding
machine which remains stationary in the insertion pit or, alternatively, which travels along the interior of the existing pipeline.
These rehabilitation processes can be used in a variety of gravity applications such as sanitary sewers, storm sewers, culverts, and
process piping.
1.1.1 When using stationary installation equipment for existing pipelines 6 to 48 in., after insertion, the spiral wound liner pipe
is expanded until it presses against the interior surface of the existing pipeline. Alternatively, for existing pipelines 6 to 108 in. in
diameter, the spiral wound liner pipe is inserted as a fixed diameter into the existing pipeline and is not expanded, and the annular
space between the spiral wound liner pipe and the existing pipe is grouted.
1.1.2 When using the traveling installation equipment for existing pipelines 6 to 180 in. the spiral wound liner pipe is installed
in contact with the interior surface of the existing pipeline to form a close fit liner, except in the corners of rectangular pipes or
where obstructions or offsets occur. Alternatively, for existing pipelines 6 to 180 in. in diameter and for similar sized existing non
circular pipelines such as arched or oval or rectangular shapes, the spiral wound liner is installed as a fixed diameter into the exiting
pipeline to form a non-close fit liner and the annular space between the spiral wound liner pipe and the existing pipe is grouted.
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 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 and health practices and determine the applicability of regulatory
limitations prior to use.
1.3.1 Particular attention is drawn to those safety regulations and requirements involving entering into and working in confined
spaces.
2. Referenced Documents
2.1 ASTM Standards:
C39/C39M Test Method for Compressive Strength of Cylindrical Concrete Specimens
C109/C109M Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube Specimens)
C495 Test Method for Compressive Strength of Lightweight Insulating Concrete
D883 Terminology Relating to Plastics
D1600 Terminology for Abbreviated Terms Relating to Plastics
F412 Terminology Relating to Plastic Piping Systems
F1417 Practice for Installation Acceptance of Plastic Non-pressure Sewer Lines Using Low-Pressure Air
F1697 Specification for Poly(Vinyl Chloride) (PVC) Profile Strip for Machine Spiral-Wound Liner Pipe Rehabilitation of
Existing Sewers and Conduit
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 Nov. 1, 2008May 1, 2016. Published December 2008May 2016. Originally approved in 1996. Last previous edition approved in 20072008 as
F1741–07.–08. DOI: 10.1520/F1741-08.10.1520/F1741-08R16.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. 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
F1741 − 08 (2016)
2.2 Uni-Bell Standard:
UNI-B-5-89 Recommended Practice for the Installation of PVC Sewer Pipe
3. Terminology
3.1 General—Definitions are in accordance with Terminologies D883 and F412. Abbreviations are in accordance with
Terminology D1600, unless otherwise indicated.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 extruded PVC profile strip—a product available in various widths, consisting of a smooth inside surface and a ribbed outer
surface with mechanically locked male and female edges which are self interlocking, or separate locking strips which serve the
same purpose Type A and Type B are different profiles and are installed by different installation methods. See Fig. 1 and Table 1
for Type A and Fig. 2 and Table 2 for Type B. See Fig. 1 and Fig. 3 for installation method for Type A and Fig. 2 and Fig. 4 for
installation method for Type B.
3.2.2 insertion point—an existing manhole, existing access shaft, or excavated pit that serves as the point where a winding
machine field fabricates the spiral wound liner pipe and simultaneously inserts the spiral wound liner pipe into the existing pipeline.
3.2.3 non-circular pipe—arched, oval or rectangular or a combination thereof.
3.2.4 production run—a continuous extrusion of a given profile type.
3.2.5 spiral wound liner pipe—a product field fabricated from extruded PVC profile strip to a round shape, or noncircular shape,
such as arched or oval or rectangular. (See Fig. 5.)
3.2.6 steel reinforcement— a shaped steel strip or clip inserted into the inside of the PVC profile to provide additional
reinforcement and stiffening. (See Fig. 3 and Fig. 4.)
3.2.7 termination point—an existing manhole, existing access shaft, or an excavated pit that serves as the point of exit of the
spiral wound liner pipe from the existing pipe.
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 non-pressure sewers and conduits. Modifications may be required for specific job conditions.
5. Materials
5.1 The extruded profile strip used for the field fabrication of spiral wound liner pipe shall be in accordance with Specification
F1697.
5.2 The profile strip should be coiled onto a reel in a continuous length for storage and shipping to the job site. Handling and
storage should be in accordance with the manufacturer’s published recommendations.
5.3 The adhesive or sealants, or both, used with the male and female mechanical locking elements should be compatible with
the PVC compound and the spiral wound liner pipe process so as not to affect the properties of the spiral wound finished liner pipe.
5.4 The steel reinforcing strips shall be used to reinforce the extruded PVC profile strip, where the design conditions requires
additional stiffness, such as for non-circular shaped pipes.
Available from Uni-Bell, 2655 Villa Creek Drive, Suite 155, Dallas TX 75234.
NOTE 1—For values of width, height, and waterway minimum wall, see Table 1.
FIG. 1 Type A-Typical PVC Profile Strip
F1741 − 08 (2016)
TABLE 1 Type A Typical Profile Strip Moments of Inertia and Stiffness Factors
C
Moment of Inertia, I Depth to Neutral Axis, y¯ Minimum Height, H Profile Area Minimum Stiffness Factor, EI
AB
Profile Type
4 4 2 2 3 2 3
in. /in. (mm /m) in. (mm) in. (mm) in. /in. (mm /mm) in. ·lbf/in. (MPa·mm )
1 0.00047 ( 7.70) 0.077 (1.98) 0.216 ( 5.5) 0.118 (3.00) 188.0 ( 21.2× 10 )
2 0.00140 ( 23.00) 0.130 (3.30) 0.314 ( 8.0) 0.146 (3.70) 561 ( 63.4× 10 )
3 0.00537 (88.00) 0.206 (5.24) 0.511 (13.0) 0.205 (5.20) 2148 (242.7 × 10 )
4 0.00386 ( 63.30) 0.200 (5.08) 0.480 (12.2) 0.125 (3.18) 1600.0 (180.8 × 10 )
5 0.00400 ( 65.50) 0.180 (4.57) 0.488 (12.4) 0.125 (3.18) 1600.0 (180.8 × 10 )
6 0.00400 ( 65.50) 0.180 (4.57) 0.488 (12.4) 0.125 (3.18) 1600.0 (180.8 × 10 )
A
Other profiles, possibly using supplementary stiffener elements, may be available. Consult the manufacturer.
B
The spacing of the ribs may vary for each profile type.
C
Stiffness factors listed are the minimum values that will be provided by the manufacturer for the given profile type.
FIG. 2 Type B-Typical PVC Profile Strip
TABLE 2 Type B Typical Profile Strip Moments of Inertia and Stiffness Factors
Moment of Inertia, I Depth to Neutral Axis, y¯ Minimum Height, H Profile Area Minimum Stiffness Factor, EI
Profile Type
4 4 2 2 3 2 3
in. /in. (mm /m) in. (mm) in. (mm) in. /in. (mm /mm) in. ·lbf/in. (MPa·mm )
1 0.00106 (17.43) . . 0.319 (8.10) 0.132 (3.36) 362.5 40955
2 0.00218 (35.80) 0.26 (6.56) 0.422 (10.71) 0.150 (3.80) 745.0 84127
3 0.00571 (93.58) 0.58 (14.67) 0.578 (14.67) 0.227 (5.76) 1946.3 219900
4 0.01165 (190.92) 0.76 (19.35) 0.762 (19.35) 0.290 (7.36) 3971.0 448656
5 0.04142 (678.68 ) 1.12 (28.53) 1.123 (28.53) 0.463 (11.75) 14116.0 1594900
6 0.00444 (72.78) 0.56 (14.22) 0.560 (14.22) 0.187 (4.76) 1513.8 171042
FIG. 3 Shaped Steel Reinforcing Strip Type A
FIG. 4 Shaped Steel Reinforcing Strip Type B
6. Installation Recommendations
6.1 Cleaning and Inspection:
6.1.1 Prior to entering access areas such as manholes and performing inspection or cleaning operations, an evaluation of the
atmosphere to determine the presence of toxic or flammable vapors or lack of oxygen must be undertaken in accordance with local,
state, or federal safety regulations .
6.1.2 Cleaning of Pipeline—Internal debris should be removed from the existing pipeline. Gravity pipes should be cleaned with
hydraulically powered equipment, high-velocity jet cleaners, or mechanically powered equipment in accordance with NASSCO
recommended specifications.
F1741 − 08 (2016)
FIG. 5 Typical Spiral Wound Liner Pipe
6.1.3 Inspection of Pipelines—Inspection of pipelines should be performed by experienced personnel trained in locating breaks,
obstacles, and service connections by closed-circuit television or by direct visual inspection. The interior of the pipeline should
be carefully inspected to determine the location of any conditions that may prevent proper installation of the spiral wound liner
pipe, such as protruding service taps, collapsed or crushed pipe, out-of-roundness, significant line sags, and deflected joints. These
conditions should be noted and corrected, if necessary, prior to installation.
6.1.4 Line Obstructions—The existing pipeline should be clear of obstructions that will prevent the proper insertion, and
expansion if required, of the spiral wound liner pipe. Obstructions could include dropped or offset joints of more than 12.5 % of
inside pipe diameter, service connections that protrude into the pipe more than 12.5 % of the inside pipe diameter or 1-in. (25-mm),
whichever is less; and other obstructions in cross-sectional area of more than 16 % based on the inside diameter of the existing
pipe. If inspection reveals an obstruction that cannot be removed by conventional equipment, then a point repair excavation should
be made to uncover and remove or repair the obstruction. The angle of any bend along the pipeline that can be negotiated by the
spiral wound liner pipe depends on a combination of factors such as the condition of the existing pipe, the location of the bend
within the pipeline, and whether there are multiple bends. For a determination of whether a given bend can be accommodated, or
whether access will be required for termination and start of a new insertion, consult the supplier of the liner material. Depending
on the method of installation used, insertion and expansion, or fixed diameter, some changes in pipe size along the insertion length
of the spiral wound liner pipe can be accommodated, and it is recommended that the spiral wound liner pipe material supplier be
contacted.
6.2 Bypassing—The spiral wound liner pipe process does not require a dry pipeline and can be installed with some flow in the
existing pipe or lateral connections, or both. If necessary, the bypass should be made by plugging the line at a point upstream of
the pipe to be reconstructed and pumping the flow to a downstream point or adjacent system. The pump and bypass lines should
be of adequate capacity and size to handle any extreme flows expected during the installation period.
6.2.1 Under certain conditions, part or all of the installation may be carried out with some flow in the existing pipeline or service
connections, or both.
6.3 Pipe Liner Fabrication and Insertion Using Stationary Installation Equipment:
6.3.1 A winding machine should be placed in the insertion pit and oriented so that the liner pipe can be spirally wound and
inserted (rotated and pushed) directly into the existing pipeline. A reel of extruded PVC profile strip should be positioned near the
insertion point. The initial winding process begins with the profile strip being fed into the winding machine, forming the profile
strip into the required spiral wound liner pipe diameter, which is simultaneously rotated and pushed along the existing pipeline for
its full length to the termination point. As the profile strip is formed into a spiral, wound liner pipe in the winding machine, the
required sealant or adhesive, or both unless already in place, shall be placed within the primary and secondary locks of the locking
configuration at the edge of the profile strip, and wire is placed between the primary and secondary locks of the locking
configuration when the spiral wound liner pipe is to be expanded (see Fig. 6 and Fig. 7).
6.3.2 When the spiral wound liner pipe is to be expanded as shown in Fig. 6, the end of the spiral wound liner pipe at the
termination point should be torsionally restrained. A specific length of the inserted spiral wound liner pipe is released at the
termination point by pulling the wire out of the expandable interlocked joint, thereby severing the secondary lock (see Fig. 6), thus
releasing the profile strip to slide freely along the primary rock when a torque is applied to the inserted spiral w
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