SIST EN 15885:2011
(Main)Classification and characteristics of techniques for renovation and repair of drains and sewers
Classification and characteristics of techniques for renovation and repair of drains and sewers
This standard is a guidance document, defining families of techniques for renovation and repair of
drains and sewers.
It provides guidance on the principles of, but not detailed methodologies for, the design and
selection criteria
for each technique family.
In particular, it provides guidance on following subjects :
- functions of the pipe after renovation or repair;
- existing pipeline and site conditions;
- technique related aspects;
- structural aspects;
- hydraulic aspects;
- physical and chemical aspects..
Klassifizierung und Eigenschaften von Techniken für die Renovierung und Reparatur von Abwasserkanälen und -leitungen
Diese Norm bietet ein System für die Klassifizierung von Technikgruppen für die Renovierung und Reparatur von Abwasserkanälen und -leitungen.
Für jede Technikgruppe sind die zutreffenden bestehenden Normen, Werkstoffe und Anwendungen aufgeführt und die Eigenschaften, einschließlich baulicher und hydraulischer Merkmale, sowie Standorteinflüsse beschrieben.
Diese Norm enthält Angaben, die für die Auswahl der optimalen Technik hinsichtlich einer vorgegebenen Reihe von Renovierungs- und Reparaturzielen erforderlich sind.
ANMERKUNG Auswahl und Planung der Renovierungs- und Reparatursysteme liegen in der Verantwortung des Planers.
Classification et caractéristiques des techniques de rénovation et de réparation des réseaux d'évacuation et d'assainissement
La présente norme fournit un système pour la classification des familles de techniques utilisées pour la rénovation et la réparation des réseaux d'évacuation et d'assainissement.
Pour chaque famille de techniques, elle dresse la liste des normes pertinentes existantes, des matériaux et applications, et expose les principales caractéristiques incluant les capacités structurelle et hydraulique et l'impact sur le site.
Cette norme fournit les informations requises pour déterminer des options viables qui permettront d'identifier la technique optimale pour un ensemble donné d'objectifs de rénovation et de réparation.
NOTE Il est de la responsabilité du concepteur de choisir et de concevoir les systèmes de rénovation et de réparation.
Klasifikacija in tehnične lastnosti za obnovo in popravilo vodov in kanalov
Ta standard je dokument z navodili, ki opredeljuje družine tehnik za obnovo in popravilo vodov in kanalov.
Podaja vodilo o načelih, a ne podrobnih metodologij, za načrtovanje in kriterije izbora za vsako družino tehnik.
Še zlasti podaja vodilo o naslednjih tematikah:
- delovanje cevi po obnovi ali popravilu;
- stanje obstoječih cevovodov in mesta;
- vidiki, povezani s tehniko;
- strukturni vidiki;
- hidravlični vidiki;
- fizikalni in kemijski vidiki.
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Klassifizierung und Eigenschaften von Techniken für die Renovierung und Reparatur von Abwasserkanälen und -leitungenClassification et caractéristiques des techniques de rénovation et de réparation des réseaux d'évacuation et d'assainissementClassification and characteristics of techniques for renovation and repair of drains and sewers93.030Zunanji sistemi za odpadno vodoExternal sewage systemsICS:Ta slovenski standard je istoveten z:EN 15885:2010SIST EN 15885:2011en,fr,de01-november-2011SIST EN 15885:2011SLOVENSKI
STANDARD
SIST EN 15885:2011
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 15885
December 2010 ICS 93.030 English Version
Classification and characteristics of techniques for renovation and repair of drains and sewers
Classification et caractéristiques des techniques de rénovation et de réparation des réseaux d'évacuation et d'assainissement
Klassifizierung und Eigenschaften von Techniken für die Renovierung und Reparatur von Abwasserkanälen und -leitungen This European Standard was approved by CEN on 30 October 2010.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15885:2010: ESIST EN 15885:2011
EN 15885:2010 (E) 2 Contents Page Foreword .31Scope .42Normative references .43Terms and definitions .44Symbols and abbreviations .75Classification of renovation techniques for drains and sewers .85.1General .85.2Lining with continuous pipes .95.3Lining with close-fit pipes . 105.4Lining with cured-in-place pipes . 125.5Lining with discrete pipes . 145.6Lining with spirally-wound pipes . 165.7Lining with a rigidly anchored inner plastics layer . 195.8Lining with pipe segments . 205.9Lining with sprayed material . 216Classification of repair techniques for drains and sewers . 236.1General . 236.2Repair by injection . 246.3Repair with cured-in-place components . 276.4Repair with trowelled material . 296.5Repair with internal mechanical devices . 316.6Repair by flood grouting . 327Classification of performance characteristics for renovation and repair . 347.1General . 347.2Structural integrity . 357.2.1External loads capacity . 357.2.2Internal loads capacity . 357.3Impacts on site . 357.4Technique requirement for man entry . 367.5Technique requirement for shape . 367.6Hydraulic performance . 368Performance levels for renovation and repair . 36Annex A (informative)
Place of this European Standard in the context of the overall design of renovation and repair of drains and sewers . 38Bibliography . 39 SIST EN 15885:2011
EN 15885:2010 (E) 3 Foreword This document (EN 15885:2010) has been prepared by Technical Committee CEN/TC 165 “Waste water engineering”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2011, and conflicting national standards shall be withdrawn at the latest by June 2011. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. It provides an overview of systems used for renovation and repair of drains and sewers, regardless of the material used. In respect of sewer renovation techniques using plastics materials only, it reproduces definitions and other information (but no requirements) contained in EN ISO 11295. Due to their continuous development the most up-to-date information on these particular techniques may be contained in either this document or EN ISO 11295, whichever is the latest dated edition. Regarding general requirements for drain and sewer systems and existing standards and draft standards on the subject of rehabilitation of drain and sewer systems, information in summary form is available in CEN/TR 15128. For management and control of rehabilitation activities in drains and sewers a European Standard is in preparation in CEN/TC 165/WG 22. This document refers to existing EN product standards to the extent available for the techniques and materials covered. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. SIST EN 15885:2011
EN 15885:2010 (E) 4 1 Scope This European Standard specifies a system for the classification of techniques for renovation and repair of drains and sewers outside buildings, operated under gravity or pressure, including pipes, connections and manholes. It defines and describes families of techniques and their different generic methods and materials used. This European Standard does not describe specific products. For each technique family it lists relevant existing standards, materials and applications and outlines characteristics including installation aspects, structural and hydraulic capabilities and site impact. Necessary work on the existing pipe prior to renovation and repair is outside the scope of this European Standard. This European Standard provides information needed to determine viable options for identification of the optimal technique with regard to a given set of renovation and repair objectives. NOTE It is the responsibility of the designer to choose and design the renovation and repair systems. It does not specify the calculation methods to determine, for each viable technique, the required amount of lining material needed to secure the desired performance of the renovated pipeline. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 752:2008, Drain and sewer systems outside buildings 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 rehabilitation measures for restoring or upgrading the performance of existing drain and sewer systems [EN 752:2008, 3.50] 3.2 renovation work incorporating all or part of the original fabric of the drain or sewer by means of which its current performance is improved [EN 752:2008, 3.52] 3.3 repair rectification of local damage
[EN 752:2008, 3.53] SIST EN 15885:2011
EN 15885:2010 (E) 5 3.4 technique family grouping of renovation or repair techniques which are considered to have common characteristics for classification purposes 3.5 lining process of renovating an existing pipeline by introducing material on the inside 3.6 liner lining pipe after installation [EN ISO 11295:2010, 3.2] 3.7 lining pipe pipe inserted for renovation purposes [EN ISO 11295:2010, 3.1] 3.8 lining system lining pipe and all relevant fittings inserted into an existing pipeline for the purposes of renovation [EN ISO 11295:2010, 3.3] 3.9 lining with continuous pipes lining with pipe made continuous prior to insertion, and which has not been shaped to give it a cross-sectional diameter smaller than its final diameter after installation [ISO 11296-1:2009, 3.2.1] 3.10 lining with close-fit pipes lining with a continuous pipe for which the cross-section is reduced to facilitate installation and reverted after installation to provide a close fit to the existing pipe
[ISO 11296-1:2009, 3.2.2] 3.11 lining with cured-in-place pipes lining with a flexible tube impregnated with a thermosetting resin, which produces a pipe after resin cure
[ISO 11296-1:2009, 3.2.3] 3.12 lining with discrete pipes lining with short lengths of pipe which are jointed to form a continuous pipe one by one during insertion 3.13 lining with spirally-wound pipes lining with a profiled strip, spirally wound to form a continuous pipe after installation [ISO 11296-1:2009, 3.2.5] SIST EN 15885:2011
EN 15885:2010 (E) 6 3.14 lining with a rigidly anchored inner plastics layer lining with a single rigid annulus of structural cementitious grout formed behind an inner plastics layer permanently anchored to the grout 3.15 lining with pipe segments lining with prefabricated segments bonded to the existing pipe, which either: a) have longitudinal joints and cover the whole of the pipe circumference, or
b) cover only part of circumference 3.16 lining with sprayed or cast-in-place material lining by applying cementitious or polymeric material, with or without reinforcement, directly onto the inside surface of the host pipe and/or manhole, by manual or mechanical (including robotic) means 3.17 non-stabilising repair repair where the materials applied have a sealing effect but do not enhance structural stability 3.18 stabilising repair repair where the materials applied have a sealing effect and can enhance structural stability
3.19 repair by grout injection filling of voids in existing pipe and/or surrounding ground by injection of grout over all or part of the perimeter of the sewer NOTE Two different methods can be distinguished: a) injection directly into a brickwork or masonry pipe structure; b) injection of the soil around the pipe. 3.20 repair by injection sealing repair of leakage at a crack, joint or lateral connection by resin or grout injection, with or without the aid of a packer 3.21 repair with cured-in-place patch repair by local lining with a flexible tube impregnated with a thermosetting resin which produces a short length of pipe after resin cure 3.22 repair with lateral connection collar repair of a connection between lateral and main pipe by installing a cured in place collar 3.23 repair with trowelled material repair of local structural defects effecting part of the drain or sewer cross-section by trowelling material directly onto the wall or into the defect of the existing pipeline by manual or mechanical means 3.24 repair with internal mechanical devices repair with internal mechanical seals or re-rounding clips SIST EN 15885:2011
EN 15885:2010 (E) 7 3.25 repair with internal mechanical seal sealing of local pipe damage and/or joints by use of an internal elastomeric seal held in place by compression rings 3.26 repair with mechanical re-rounding clip restoration of pipe roundness by insertion of an overlapping or hinged metal ring, which is expanded hydraulically and locks into place to permanently reverse local cross section deformation of circular pipe 3.27 flow diversion temporary abatement of all flows into the section of pipeline to be renovated or repaired by bypassing or other means 3.28 maintenance routine work undertaken to ensure the continuing performance of drain and sewer systems [EN 752:2008, 3.40] 4 Symbols and abbreviations SEL
structural integrity based on external loads capacity G
gravity pipeline applications P
pressurized pipeline applications SIL
structural integrity based on internal loads capacity
EW
excavation works NM
non man entry ME
man entry CS
circular shape NC
non circular and circular shapes possible CCTV
closed circuit television UP
unsaturated polyester EP
epoxy
VE
vinylester
PE
polyethylene PVC-U
unplasticized poly(vinyl chloride) PP
polypropylene EPDM
ethylene-propylene-diene monomer GRP
glass reinforced plastics GRC
glass reinforced cement SIST EN 15885:2011
EN 15885:2010 (E) 8 PUR
polyurethane PCC
polymer concrete 5 Classification of renovation techniques for drains and sewers 5.1 General Renovation technique families within the scope of this European Standard are shown in Figure 1. This clause establishes a classification of renovation techniques into families, where renovation is applied to continuous lengths of drain or sewer usually between two or more access points. Individual techniques shall be classified into families according to 5.2 to 5.9 where the different renovation technique families are defined and their respective features, including materials, applications, as well as geometric, performance and installation characteristics, are described.
a Outside the scope of this European Standard. b Other renovation techniques, which do not fit into the above families, are outside the scope of this European Standard which covers only technique families commonly available at the time of drafting. Figure 1 — Renovation technique families SIST EN 15885:2011
EN 15885:2010 (E) 9 5.2 Lining with continuous pipes Lining with pipe made continuous, typically by butt-fusion, prior to insertion, where the cross section of the pipe used for lining remains unchanged. Two possible methods of lining with continuous pipes are shown in Figure 2 and Table 1. Method B of this technique re-rounds the existing pipeline just ahead of insertion of the lining pipe in order to maximise cross section and reduce average annular gap.
Key 1
pulling head 2
lining pipe
3
prior jointing of lining pipe
4
pulling force
5
existing pipe a) Schematic representation of lining with continuous pipes without re-rounding of existing pipeline (Method A)
Key 1
pulling and re-rounding head (only for Method B)
2
lining pipe
3
prior jointing of lining pipe 4
pulling force
5
re-rounded defect
6
defects
7
existing pipe b) Schematic representation of lining with continuous pipes with re-rounding of existing pipeline (Method B) Figure 2 — Lining with continuous pipes SIST EN 15885:2011
EN 15885:2010 (E) 10 Table 1 — Features of lining with continuous pipes Feature Description Relevant standards: EN 13566-1 and EN 13566-2 Materials: plastics (PE, PP) Applications: − non pressure pipes; − pressure pipes Geometric characteristics: − non circular cross section possible for Method A; − typical minimum size:
100 mm for Method A, 150 mm for Method B; − typical maximum size:
1 200 mm for Method A, 600 mm for Method B; − typical maximum length:
300 m for Method A, 100 m for Method B; − some Method A techniques capable of accommodating bends Performance: − significant reduction in hydraulic (volumetric and flow) capacity for Method A; minimal reduction of volumetric capacity with increase in flow due to reduced friction possible for Method B; − uniform gradient cannot be restored; − structural rehabilitation is possible; − abrasion resistance depends on material; − chemical resistance depends on material Installation characteristics: a) pipes manufactured or prior assembled into the continuous length required; for Method B pipes of non standard outside diameter required (max. 10 mm less than host pipe inside diameter); b) insertion possible by pushing and/or pulling for Method A; for Method B only by pulling with use of re-rounding head; c) surface working space: storage of the whole insertion length required on surface: 1) small diameters (typically ≤ 180 mm) can be supplied on coils, small space; 2) larger diameters: supplied in straight lengths requiring greater storage and working space; d) access to the existing pipeline: generally requires local excavation; e) technique does not rely on adhesion to host pipe; f) flow diversion is typically required for installation; g) the annular space is typically grouted for Method A but not applicable to Method B; h) reconnection of laterals: generally requires excavation for Method A except in man entry sizes; for Method B reconnection from inside possible
5.3 Lining with close-fit pipes Lining with a continuous pipe for which the cross section is reduced to facilitate installation and reverted after installation to provide a close fit to the existing pipe. Two possible methods of lining with close fit pipes are shown in Figure 3 and Table 2: − Method A: reduction in the pipe manufacturing plant; the pipe is usually supplied coiled on a reel from which it is directly inserted; − Method B: reduction on site (typically applied to pressure pipelines only); the pipe is fed through diameter reduction or folding equipment and simultaneously inserted.
SIST EN 15885:2011
EN 15885:2010 (E) 11
Key 1 pulling head
2 lining pipe (folded) 3 drum trailer
4 pulling line
NOTE Pipe reverted (unfolded) after insertion by application of heat and/or pressure. a) Schematic representation of installation of a pipe reduced in cross section in the pipe manufacturing plant (Method A)
Key 1 pulling head 2a initial lining pipe 2b reduced lining
pipe 3
cross section
reducing device
NOTE Pipe reverted (expanded) after insertion by release of pulling force and application of pressure. b) Schematic representation of installation of a pipe reduced in cross section on site (Method B) Figure 3 — Lining with close-fit pipes SIST EN 15885:2011
EN 15885:2010 (E) 12 Table 2 — Features of lining with close fit pipes Feature Description Relevant standards: EN 13566-1 and EN 13566-3 Materials: plastics only (PE, PVC-U) Applications: − non pressure pipes; − pressure pipes Geometric capabilities: − some deviation from nominally circular shape possible; typical minimum size: 100 mm for Method A, 200 mm for Method B; − typical maximum size: 500 mm for Method A, 1 500 mm for Method B; − typical maximum length: 500 m; − some techniques are capable of accommodating bends Performance: − minimal reduction in volumetric capacity; increase in flow due to reduced friction possible; − gradient cannot be restored; − structural rehabilitation is possible; − abrasion resistance depends on material; − chemical resistance depends on material Installation characteristics: a) lining pipe first reduced in size by mechanical or thermo-mechanical means (in the manufacturing plant or on site), inserted and then reverted by relief of installation forces or application of heat and/or pressure; b) surface working space: no particular constraint for Method A, storage of the whole insertion length required on surface for Method B; c) access: typically through manhole for Method A, requires local excavation for Method B; d) technique does not rely on adhesion to host pipe; e) flow diversion is required; f) grouting not applicable; g) reconnection of laterals: 1) gravity pipelines: possible from inside (re-opening and tight connection);
2) in pressure applications: generally requires excavation, except in man entry sizes
5.4 Lining with cured-in-place pipes Lining with a flexible tube impregnated with a thermosetting resin which produces a pipe after resin cure (see Figure 4 and Table 3). SIST EN 15885:2011
EN 15885:2010 (E) 13 Key 1 applied air or
water pressure
for inversion 2 lining pipe 3 inversion face 4 water or air for
inversion
a) Schematic representation of lining with cured-in-place pipes installed by inversion (Method A) Key 1 lining pipe 2 winch 3 end packer 4 curing equipment 5 compressor
b) Schematic representation of lining with cured-in-place pipes installed by winching and subsequent inflation (Method B) Figure 4 — Lining with cured-in-place pipes SIST EN 15885:2011
EN 15885:2010 (E) 14 Table 3 — Features of lining with cured-in-place pipes Feature Description Relevant standards: EN 13566-1 and EN 13566-4 Materials: A composite consisting of a reinforced or unreinforced fabric carrier material impregnated with thermosetting resin (UP, EP or VE), which can include optional internal and/or external membranes. For details, see the relevant standard. Applications: − non pressure pipes; − pressure pipes; − technique is applicable for manholes Geometric capabilities: − circular and non circular cross section; − typical minimum size:
100 mm; − typical maximum size: 2 800 mm; − typical maximum length: Method A: 600 m, Method B: 250 m; − bends can be accommodated Performance: − minimal reduction in volumetric capacity; increase in flow due to reduced friction possible; − restoring of invert is not possible; − structural rehabilitation is possible; − abrasion resistance depends on wall structure; − chemical resistance mainly depends on resin type Installation characteristics: a) insertion of the impregnated tube, prior to curing, can be achieved by:
1) inverting into position with fluid pressure only (water or air) or 2) winching into place and then inflating; 3) combinations of Methods a) and b) are also possible;
b) the curing process can be initiated or accelerated by either:
1) heat (hot water, steam or electrical heating elements); UV radiation or 2) ambient temperature; c) surface working space: generally minimal, varies with technique; d) access: entry via existing manhole or small excavation possible; e) structural effect does not rely on adhesion to host pipe; f) flow diversion required; g) grouting of annular space not necessary; h) re-opening of laterals from inside is possible; i) reconnection of laterals: 1) gravity pipelines: possible from inside (re-opening and tight connection); 2) in pressure applications: generally requires excavation, except in man entry sizes
5.5 Lining with discrete pipes Lining with short lengths of pipe which are jointed to form a continuous pipe one by one during insertion (see Figure 5 and Table 4). Discrete pipes can be installed by pushing (Method A), by pulling (Method B) or by individual pipe placement (Method C). NOTE Use of a re-rounding head with as described in 5.2 is also possible for discrete pipes Method B. SIST EN 15885:2011
EN 15885:2010 (E) 15
Key 1 pushing device 2 pushing guide 3
jointed lining pipe 4 thrust plate
NOTE The diameter of discrete pipes for insertion is slightly reduced against the existing pipe. a) Schematic representation of installation by pushing (Method A)
Key 1 winch 2 pulling
head 3
jointed
lining pipe 4 stock of
discrete
pipes 5
existing
pipe 6 re-rounding
and pulling
head
b) Schematic representation of installation by pulling (Method B)
Key 1 existing pipe 2 individual discrete
pipe being pulled or
pushed into place 3 manhole
c) Schematic representation of installation by individual pipe placement (Method C) Figure 5 — Lining with discrete pipes SIST EN 15885:2011
EN 15885:2010 (E) 16 Table 4 — Features of lining with discrete pipes Feature Description Relevant standards: EN 13566-1 Materials: − plastics (PE, PP, PVC-U, GRP); − metallic (steel, ductile Iron); − concrete based materials (inclusive polymer concrete), clay Applications: − pressure pipes; − non pressure pipes; − technique applicable for manhole renovation Geometric capabilities: − circular and non circular cross section; − typical minimum size: Method A and B:
100 mm; Method C:
800 mm; − typical maximum size: Method A and B:
600 mm; Method C:
4 000 mm; − typical maximum length:
150 m; − Bends: bends can generally not be accommodated for Method A and B; bends with large radii can be accommodated for Method C Performance: − significant reduction in hydraulic (volumetric and flow) capacity for Method A; minimal reduction of volumetric capacity for Method B where re-rounding head is used, with increase in flow due to reduced friction possible; for Method C, reduction in capacity dependent on annular space and diameter/thickness ratio; − uniform gradient can be restored using Method C in man-entry pipes; − structural rehabilitation is possible; − abrasion resistance depends on material; − chemical resistance depends on material Installation characteristics: − the type of joint is a significant feature of each technique; − pipe joints can be locked (end load bearing) or unlocked; − surface working space: no particular constraint; − short pipe lengths may allow insertion from existing manholes (Methods A and B); − access to the existing pipeline:
generally through manholes but requires local excavation for man entry sizes; − technique does not rely on adhesion on host pipe; − flow diversion is typically required for installation and grouting; − the annular space is typically grouted, except for Method B when re-rounding and non standard lining pipe outside diameter is used (see 5.2); − reconnection of laterals: generally requires excavation; except in man entry sizes; for Method B, when a re-rounding head is used, reconnection from inside possible
5.6 Lining with spirally-wound pipes Lining with a profiled strip, spirally wound to form a continuous pipe after installation (see Figure 6 and Table 5). This technique family does not rely on any contribution from grout for its structural performance. NOTE For this technique the continuous pipe after installation is the structural element, with minimum ring stiffness conforming to EN 13566-1. SIST EN 15885:2011
EN 15885:2010 (E) 17
Key 1 plastics strip to be
spirally wound 2 winding machine in the
manhole 3 guidance head (where
applicable) 4 spirally-wound lining pipe
a) Schematic representation of fixed diameter winding from the manhole (Method A1)
Key 1 plastic strip to be spirally
wound 2 winding machine in the
manhole 3 spirally-wound lining pipe
temporarily locked at
reduced diameter for
insertion
b) Schematic represe
...
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