SIST EN 15885:2019
(Main)Classification and characteristics of techniques for renovation, repair and replacement of drains and sewers
Classification and characteristics of techniques for renovation, repair and replacement of drains and sewers
This European Standard specifies a system for the classification of trenchless techniques for renovation, repair and replacement on the same line 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 apply for replacement by open trenching according to EN 1610 and trenchless construction and testing of drains and sewers as new construction off-the-line of the existing drain or sewer according to EN 12889.
This European Standard does not apply for the specification of requirements for 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.
This standard does not apply to any work required on the existing pipe prior to renovation, repair or replacement.
This European Standard provides information needed to determine viable options and for identification of the optimal technique with regard to a given set of renovation, repair or replacement objectives.
NOTE It is the responsibility of the designer to choose and design the renovation, replacement and repair systems.
It does not specify the calculation methods to determine, for each viable technique, the required amount of material needed to secure the desired performance of the pipeline to be rehabilitated.
Klassifizierung und Eigenschaften von Techniken für die Renovierung, Reparatur und Erneuerung von Abwasserkanälen und -leitungen
Diese Europäische Norm legt ein System zur Klassifizierung von Techniken für die grabenlose Renovierung, Reparatur und Erneuerung in der bisherigen Linienführung von Abwasserkanälen und leitungen außerhalb von Gebäuden fest, die unter Schwerkraft oder Druck betrieben werden, einschließlich Rohre, Verbindungen und Einsteigschächte. Sie definiert und beschreibt Technikfamilien und deren verschiedene allgemeine Verfahren und Werkstoffe.
Diese Europäische Norm gilt nicht für die Erneuerung durch offene Gräben nach EN 1610 und grabenlose Verlegung und Prüfung von Abwasser–kanälen und -leitungen als Neuverlegung mit anderer als der besteh¬enden Linienführung der Abwasserkanäle und -leitungen nach EN 12889.
Diese Europäische Norm gilt nicht für die Festlegung von Anforderungen an besondere Produkte.
Für jede Technikfamilie sind die zutreffenden bestehenden Normen, Werkstoffe und Anwendungen aufge-führt und die Eigenschaften, einschließlich Einbauaspekte, baustatischer und hydraulischer Leistungs-merkmale sowie Standorteinflüsse, dargestellt.
Diese Norm gilt nicht für die vor Renovierung, Reparatur oder Erneuerung nötigen Arbeiten am vorhan-denen Rohr.
Diese Europäische Norm enthält Angaben, die für die Bestimmung praktikabler Optionen und Auswahl der optimalen Technik im Hinblick auf eine vorgegebene Reihe von Renovierungs , Reparatur oder Erneuerungszielen erforderlich sind.
ANMERKUNG Es liegt in der Verantwortung des Entwurfsplaners, das Renovierungs , Erneuerungs und Reparatur-system auszuwählen und zu entwerfen.
Sie legt keine Berechnungsverfahren fest, mit denen für jede praktikable Technik die erforderliche Menge des Werkstoffs ermittelt werden kann, die zur Sicherstellung der gewünschten Leistung der sanierten Rohr¬leitung benötigt wird.
Classification et caractéristiques des techniques de rénovation, de réparation et de remplacement des réseaux d’évacuation et d’assainissement
La présente Norme européenne spécifie un système de classification pour les techniques sans tranchée de rénovation, de réparation et de remplacement sur la même conduite des réseaux d’évacuation et d’assainissement situés à l’extérieur des bâtiments, fonctionnant par gravité ou sous pression, incluant les canalisations, les branchements et les regards de visite. Elle définit et décrit les familles de techniques, ainsi que leurs différentes méthodes génériques et les matériaux utilisés.
La présente Norme européenne ne s’applique pas au remplacement par tranchée ouverte conformément à l’EN 1610, ni à la construction sans tranchée et à l’essai de réseaux d’évacuation et d’assainissement en tant que nouvelle construction hors conduite du réseau d’évacuation ou d’assainissement existant conformément à l’EN 12889.
La présente Norme européenne ne s’applique pas pour la spécification des exigences relatives aux produits spécifiques.
Pour chaque famille de techniques, elle dresse la liste des normes pertinentes existantes, des matériaux et applications, et expose les principales caractéristiques incluant les différents aspects de l’installation, les capacités structurelle et hydraulique et l’impact sur le site.
La présente norme ne s’applique pas aux travaux requis sur la canalisation existante avant tout remplacement, toute rénovation ou toute réparation.
La présente Norme européenne fournit les informations requises pour déterminer des options viables et qui permettront d’identifier la technique optimale pour un ensemble donné d’objectifs de rénovation, de réparation et de remplacement.
NOTE Il est de la responsabilité du concepteur de choisir et de concevoir les systèmes de rénovation, de remplacement et de réparation.
La présente Norme européenne ne spécifie pas les méthodes de calcul qui permettent de déterminer, pour chaque technique viable, la quantité de matériau nécessaire pour garantir les performances désirées pour la canalisation à réhabiliter.
Klasifikacija in tehnične lastnosti za obnovo, popravilo in zamenjavo vodov in kanalov
Ta evropski standard določa sistem za klasifikacijo tehnik brez izkopa za obnovo, popravilo in zamenjavo na istih vodih in kanalih zunaj stavb, ki delujejo s pomočjo gravitacije ali tlaka, vključno s cevmi, priključki in jaški. Določa in opisuje družine tehnik in njihove različne splošne metode ter uporabljene materiale.
Ta evropski standard se ne uporablja za zamenjavo s tehniko odprtih jarkov v skladu s standardom EN 1610 ter za izvedbo in preskušanje vodov in kanalov brez izkopa v obliki nove izvedbe izven obstoječega voda ali kanala v skladu s standardom EN 12889.
Ta evropski standard se ne uporablja za specifikacijo zahtev glede specifičnih izdelkov.
Za vsako družino tehnik navaja ustrezne obstoječe standarde, materiale in uporabe ter opisuje tehnične značilnosti, vključno z vidiki namestitve, strukturnimi in hidravličnimi sposobnostmi ter vplivom na mesto cevovoda.
Ta standard se ne uporablja za nobeno delo, ki je potrebno na obstoječi cevi pred prenovo, popravilom ali zamenjavo.
Ta evropski standard vsebuje informacije, ki so potrebne za določitev optimalne tehnike v povezavi z danim naborom ciljev glede prenove, popravila ali zamenjave.
OPOMBA: Načrtovalec je odgovoren za izbiro in načrtovanje sistema za obnovo in popravilo.
Dokument ne določa računske metode za določanje, za vsako izvedljivo tehniko, potrebne količine materiala, ki je potreben za zagotovitev želene učinkovitosti cevovoda, ki bo obnovljen.
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.NDQDORYKlassifizierung und Eigenschaften von Techniken für die Renovierung, Reparatur und Erneuerung von Abwasserkanälen und -leitungenClassification et caractéristiques des techniques de rénovation, de réparation et de remplacement des réseaux d’évacuation et d’assainissementClassification and characteristics of techniques for renovation, repair and replacement of drains and sewers93.030Zunanji sistemi za odpadno vodoExternal sewage systems91.140.80Drenažni sistemiDrainage systemsICS:Ta slovenski standard je istoveten z:EN 15885:2018SIST EN 15885:2019en,fr,de01-januar-2019SIST EN 15885:2019SLOVENSKI
STANDARDSIST EN 15885:20111DGRPHãþD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 15885
November
t r s z ICS
{ uä r u r Supersedes EN
s w z z wã t r s rEnglish Version
Classification and characteristics of techniques for renovationá repair and replacement of drains and sewersClassification et caractéristiques des techniques de rénovationá de réparation et de remplacement des réseaux d 5évacuation et d 5assainissement
Klassifizierung und Eigenschaften von Techniken für die Renovierungá Reparatur und Erneuerung von Abwasserkanälen und æleitungen This European Standard was approved by CEN on
t w June
t r s zä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Rue de la Science 23,
B-1040 Brussels
t r s z CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s w z z wã t r s z ESIST EN 15885:2019
Place of this European Standard in the context of the overall design of replacement, renovation and repair of drains and sewers . 51 Bibliography . 52 SIST EN 15885:2019
11295:2017; c) Table 1 to Table 9 supplemented by features "Installation equipment", "Surface area" and "Excavation"; d) images partly adapted to EN ISO
11295:2017; e) sequence of sub-clauses 5.7 and 5.8 exchanged; f) technique family “Repair with trowelled material” (previous sub-clause 6.4) renamed “Repair with trowelled or moulded material”, and distinction between these techniques and Repair by injection clarified by extended text in new 7.2 and 7.4; g) editorial changes. This document refers to existing EN product standards to the extent available for the techniques and materials covered. It provides an overview of trenchless methods used for renovation and repair of drains and sewers, and for their replacement on the same line, regardless of the material used. In respect of sewer renovation
and replacement 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 edition. For management and control of rehabilitation activities in drains and sewers a European Standard EN 14654-2, Management and control of operational activities in drain and sewer systems outside buildings — Part 2: Rehabilitation is available. According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 15885:2019
a 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 5.2 Lining with continuous pipes Lining is carried out with a continuous pipe or a pipe made continuous, typically by butt-fusion, prior to insertion, where the cross section of the pipe used for lining remains unchanged. This technique is often referred to as slip-lining. Two methods of lining with continuous pipes are identified: — Method A: The lining pipe is smaller in diameter than the internal diameter of the host pipe to facilitate installation, and the host pipe itself is nominally round and without geometric defects. — Method B: The lining pipe is smaller in diameter than the internal diameter of the host pipe to facilitate installation, but the host pipe may have geometric defects that are corrected by using a ‘re-rounding pulling head’. A schematic representation of lining with continuous pipes, with re-rounding of existing pipeline, is shown in Figure 2. Features common to both methods are described in Table 1. SIST EN 15885:2019
Key 1 pulling and re-rounding head (only for Method B) 5 re-rounded defect 2 lining pipe 6 defects 3 prior jointing of lining pipe 7 existing pipe 4 pulling force
Figure 2 — Schematic representation of lining with continuous pipes with re-rounding of existing pipeline SIST EN 15885:2019
non-pressure pipes; —
pressure pipes. Geometric characteristics: —
minimum size:
100 mm; —
maximum size:
1 200 mm; —
maximum length:
750 m; —
capable of accommodating slightly curved alignments of the existing pipe. Performance: —
significant reduction in hydraulic (volumetric and flow) capacity; —
invert grade of liner can deviate from that of existing pipeline; —
structural rehabilitation is possible; —
abrasion resistance depends on liner material; —
chemical resistance depends on liner material. Installation characteristics: a)
pipes manufactured or prior assembled into the continuous length required; b)
insertion possible by pushing and/or pulling; c)
surface working space: storage of the whole insertion length required on surface: 1)
small diameters (typically
mm) can be supplied on coils, small space; 2)
larger diameters: supplied in straight lengths; 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 can be grouted, e.g. in non-pressure applications, to fix line and level and/or prevent subsequent movement; h)
live insertion is possible (but excl. drinking water applications for hygiene reasons); i)
reconnection of laterals: generally requires excavation. Installation equipment: —
rollers to support the entire length of the lining pipe string (except where pipe is inserted directly from a coil); —
pushing unit, if applicable; —
rollers to guide the lining pipe into the existing pipeline; —
winch or rod puller to pull the lining pipe through the existing pipeline; —
jointing equipment appropriate to the material; —
grouting equipment, if applicable. Surface area: —
for the lining pipe string (or coil trailer for smaller diameters) at the insertion end; —
for a winch or a rod puller at the receiving end. Excavation: —
at the insertion end: —
long enough to allow the lining pipe to enter the existing pipeline, taking account of the permissible minimum bending radius; —
wide enough for the guidance equipment and pushing equipment if applicable; —
at the receiving end: —
large enough to accommodate the lining pipe nose cone and the winch mast or rod puller, where applicable. SIST EN 15885:2019
Key 1 drum trailer 5 winch cable 2 pipe guide 6 winch 3 lining pipe (folded) 7 guide pulley 4 pulling head 8 bracing NOTE
Pipe reverted (unfolded) after insertion by application of heat and/or pressure. Figure 3 — Schematic representation of installation of a pipe reduced in cross section in the pipe manufacturing plant (Method A) SIST EN 15885:2019
Key 1 pulling head 4 winch or rod pulling device 2a initial lining pipe 5 guide pulley 2b reduced lining pipe 6 bracing cage 3 device for reducing
NOTE Pipe reverted (expanded or unfolded as applicable) after insertion by release of pulling force and application of pressure. Figure 4 — Schematic representation of installation of a pipe reduced in cross section on site (Method B) Table 2 — Features of lining with close fit pipes Feature Description Relevant documents: EN ISO 11296-3, EN ISO 11297-3 Materials: PE and PVC-U Applications: —
non-pressure pipes; —
pressure pipes. Geometric characteristics: —
some deviation from nominally circular shape possible; —
minimum size: 100 mm for both Method A and Method B; —
maximum size: 500 mm for Method A, 1 500 mm for Method B; —
maximum length: 500 m; —
some techniques can accommodate 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 liner material; —
chemical resistance depends on liner material. SIST EN 15885:2019
lining pipe first reduced in size by mechanical or thermo-mechanical means (in the manufacturing plant or on site), inserted (in the case of PVC-U pre-heating generally required) 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 can be required on surface for Method B (depends on specific technique); 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. Installation equipment: —
rollers to support the entire length of the lining pipe string (except where pipe is inserted directly from a coil); —
guide for entrance of the lining pipe into the existing pipeline; —
winch to pull the lining pipe through the existing pipelinea; —
pushing unit, if applicable; —
a compressor and a steam generator (where applicable), or hydraulic pressurisation pump according to particular technique, for lining pipe reversion; —
jointing equipment appropriate to material. Surface area: —
for the lining pipe string (or coil trailer for smaller diameters and/or folded pipe) at the insertion end; —
for reducing or folding equipment at the insertion end where reduction or folding is carried out simultaneously with insertion; —
for a winch at the receiving end; —
for reversion equipment. Excavation: —
for Method A, not necessary for sewer applications, where access through existing manholes is sufficient due to flexibility of the lining pipe; in other applications, only small excavations at both ends; —
for Method B, at the insertion end: long enough to allow the lining pipe to enter the existing pipeline, taking account of the permissible minimum bending radius;
wide enough for the guidance equipment and pushing equipment, if applicable; —
at the receiving end: large enough to accommodate the lining pipe nose cone and longitudinal retraction during reversion of the lining pipe, if applicable. a
Where reducing is carried out simultaneously with insertion, winching forces can be high, necessitating substantial anchoring of winch and reducing equipment. 5.4 Lining with cured-in-place pipes Lining is carried out with a flexible tube impregnated with a thermosetting resin which produces a pipe after resin cure. Schematic representations are shown in Figures 5 and 6. Features are described in Table 3. SIST EN 15885:2019
Key 1 impregnated lining pipe 4 inversion face 2 applied water head for inversion 5 scaffold tower 3 water reservoir 6 clamping flange or ring Figure 5 — Schematic representation of lining with cured-in-place pipes installed by inversion (Method A)
Key 1 impregnated lining pipe 2 winch Figure 6 — Schematic representation of lining with cured-in-place pipes installed by winching and subsequent inflation (Method B) SIST EN 15885:2019
non-pressure pipes; —
pressure pipes. Geometric characteristics: —
circular and non-circular cross-section; —
minimum size:
100 mm; —
maximum size: 2 800 mm; —
maximum length: Method A: 600 m, Method B: 300 m; —
bends can be accommodated; —
change of dimensions 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 lining pipe, prior to curing, can be achieved by: 1)
inverting into position with
pressure only (water or air) or 2)
winching into place and then inflating; 3)
combinations of Methods A and B are also possible; b)
curing process can be initiated or accelerated by either: 1)
heat (hot water, steam); 2)
UV radiation; 3)
ambient temperature; c)
surface working space: generally minimal, varies with technique; d)
access: entry through existing manhole or small excavation possible; e)
structural effect does not rely on adhesion to host pipe; f)
flow diversion required; g)
re-opening of laterals from inside is possible; h)
reconnection of laterals: 1)
gravity pipelines: possible from inside (re-opening and tight connection); 2)
in pressure applications: generally requires excavation. Installation
equipment: —
lining pipe delivery unit, including conveyor system, if applicable; —
site impregnation unit, if applicable; —
for inverted-in-place systems: water column or air compressor; —
for winched-in-place systems: winch and water boiler or steam generator for heat curing, or equipment including power supply for UV. Surface area: —
for lining pipe delivery unit immediately adjacent to the insertion access; —
for site impregnation unit, if applicable; —
for inversion or winching equipment; —
for curing equipment. Excavation: —
not generally necessary for sewer applications, where access through existing manholes is sufficient due to flexibility of the uncured lining pipe; —
excavations at both ends for other applications. SIST EN 15885:2019
Key 1 thrust plate 3 jointed lining pipe 5 existing pipe 2 pushing device 4 pushing guide
NOTE The diameter of discrete pipes for insertion is slightly reduced against the existing pipe. Figure 7 — Schematic representation of installation by pushing (Method A)
Key 1 winch 4 stock of discrete pipes 2 pulling head 5 existing pipe 3 jointed lining pipe with end load bearing joints 6 re-rounding and pulling head Figure 8 — Schematic representation of installation by pulling (Method B) SIST EN 15885:2019
Key 1 manhole 2 individual discrete pipe being pulled or pushed into place 3 existing pipe 4 pipes already in position Figure 9 — Schematic representation of installation by individual pipe placement (Method C) SIST EN 15885:2019
pressure pipes; —
non-pressure pipes. Geometric characteristics: —
circular and non-circular cross-section; —
minimum size: Method A and B:
100 mm; Method C:
800 mm; —
maximum size: Method A and B:
600 mm; Method C:
4 000 mm; —
maximum length:
150 m; —
bends: bends with large radii can be accommodated by Method C only. Performance: —
significant reduction in hydraulic (volumetric and flow) capacity; —
uniform gradient can be restored using Method C in man-entry pipes; —
structural rehabilitation is possible; —
abrasion resistance depends on liner material; —
chemical resistance depends on liner 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; —
access to the existing pipeline:
short pipe lengths can allow insertion from existing manholes (Methods A and B), but man-entry sizes installed by Method C can require local excavation; —
technique does not rely on adhesion on host pipe; —
flow diversion is typically required for installation and grouting; —
the annular space is typically grouted; —
reconnection of laterals: generally requires excavation; except in man-entry sizes. Installation
equipment: —
pipe handling equipment; —
generator to power pipe jacking equipment. Surface area: —
for storage of pipes, —
for pipe handling equipment, —
for a generator to power the pipe jacking equipment. Excavation: —
not generally necessary for sewer applications, access through manhole
due to availability of short pipe lengths; —
for other applications, excavation large enough to accommodate
jacking equipment at the insertion end; —
man-entry access needed at receiving end. SIST EN 15885:2019
Key 1 plastics strip to be spirally-wound 3 guidance head (where applicable) 2 winding machine in the manhole 4 spirally-wound lining pipe Figure 10 — Schematic representation of fixed diameter winding from the manhole (Method A1) SIST EN 15885:2019
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 4 expanded diameter Figure 11 — Schematic representation of expanded liner winding from the manhole (Method A2)
Key 1 plastics strip to be spirally wound 2 winding machine in the pipe 3 spirally-wound liner Figure 12 — Schematic representation of winding of liner from pipe-traversing winding machine (Method B) SIST EN 15885:2019
non-pressure; —
applicable for manholes. Geometric characteristics: —
Method A circular cross-section only; Method B adaptable also to non-circular sections; —
minimum size: 150 mm for Method A; 800 mm for Method B; —
maximum size 3 000 mm for Method A, 1 800 mm for Method Ba; —
maximum length: 300 m; —
bends can be accommodated. Performance: —
reduction in capacity dependent on annular space and ratio of diameter
to overall profile height; —
uniform gradient can generally not be restored; —
structural renovation is possible; —
abrasion resistance depends on liner material; —
chemical resistance depends on liner material. Installation characteristics: —
lining pipe formed on site by spirally winding a strip, which is jointed
and sealed by solvent welding and/or mechanical means; —
individual winding machines can produce a range of diameters; —
no pipe storage on site; —
surface working space generally minimal; —
access through manholes possible; —
technique does not rely on adhesion to host pipe; —
flow diversion during installation is required for grouting and installation; —
grouting of annular space is required for fixed diameter; —
for (re)connection of laterals in non-man-entry pipes, local excavation
is generally required; reconnection from the inside is also possible. Installation equipment: —
strip winder; —
grouting equipment (if applicable). Surface area: —
for drums of liner strip at the insertion end; —
for a generator to power the winder at the insertion end. Excavation: —
manhole access sufficient due to flexibility of lining strip and small size
of the winder. a
Larger sizes are possible with steel reinforcement. SIST EN 15885:2019
Key 1 lining pipe segments 3 longitudinal joints 2 grout 4 existing pipe Figure 13 — Full and partial lining with pipe segments SIST EN 15885:2019
non-pressure pipes; Geometric characteristics: —
circular and non-circular cross-section; —
minimum size: man-entry sewer only; —
maximum size: no limit; —
maximum length: no limit; —
bends can be accommodated; —
change of dimensions can be accommodated. Performance: —
hydraulic performance: reduction in capacity dependent on annular space
and thickness in relation to diameter; uniform gradient can be restored; —
structural enhancement: structural renovation is possible; —
abrasion and chemical resistance: liner pipe material determines abrasion
and chemical resistance. Installation characteristics: —
jointing by either mechanical interlock or laminate/bonding; —
lining pipe segments prefabricated or shaped in place; —
mechanical link to host pipe using grouting, gluing and/or anchoring is
required; —
surface working space minimal at access point, but site storage for segments
required; —
access through manholes is possible; —
flow diversion dependent on safety requirements due to man entry; —
grouting of annular space is required; —
reconnection of laterals is possible from inside. Installation
equipment: —
winch; —
grouting equipment (if applicable). Surface areas: —
for material storage at the insertion end; —
for a generator to power the winch at the receiving end. Excavation: —
manhole access sufficient. 5.8 Lining with a rigidly anchored plastics inner layer (RAPL) Lining is carried out with a single rigid annulus of structural mineral material formed behind a plastics inner layer with integral profiles or studs permanently anchored to the grout. This technique family relies on the rigid annulus of grout for its structural performance. A schematic representation is shown in Figure 14. Features are described in Table 7. SIST EN 15885:2019
Key 1 anchored plastics inner layer 2 grout system 3 existing pipe 4 spacer (technique dependent) 5 anti-flotation spacers x height of anchors y minimum thickness of grout above height of anchors Figure 14 — Example of wall construction of a lining system with RAPL Several different types of plastics inner layer introduced by different techniques are in use. In addition to tubes of studded plastics sheeting winched in place and inflated prior to grouting, these include discrete pipes of plastics materials installed according to 5.5, profiled plastics strips formed into a pipe by spiral winding according to 5.6 or by other means, and pipe segments of plastics materials according to 5.7, where structural performance depends on permanent anchorage of the plastics component to a rigid annulus of cementitious grout. SIST EN 15885:2019
equipment: — winch, and — grouting equipment (if applicable); Surface area: — for material storage at the insertion end, and — for a generator to power the winch at the receiving end; Excavation: — manhole access sufficient. a Sizes up to 5 000 mm are possible with certain
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