CEN/TC 155/WG 14 - Systems of glass-reinforced thermosetting plastics for all applications - Polyester, epoxy and polyester resin based concrete

ISO 7510:2017 specifies a method for the determination of constituent materials of a test sample cut from a glass-reinforced plastics (GRP) component intended for use in a piping system. It includes determination of resin, glass, aggregate and filler contents.
It is also applicable to the determination of the type and arrangement of the reinforcements. If used to determine the amounts of constituent materials in layered constructions it may be necessary to separate the laminate layers by cutting or splitting and testing each separately.

This document specifies methods for determining the ring creep properties for glass-reinforced thermosetting plastics (GRP) pipes. Properties include the creep factor and the long-term creep stiffness. Testing is performed under either wet (total immersion in water) or dry conditions.
Dry creep testing is typically performed for the assessment and control of raw material consistency. Wet creep testing is typically undertaken to determine the long-term creep performance in simulated use conditions.

This document gives guidance on the assessment of conformity of GRP-UP (glass-reinforced thermosetting resins based on unsaturated polyesters) piping products and assemblies in accordance with EN ISO 23856. ISO 25780 and ISO 16611 intended to be included in the manufacturer’s quality plan as part of the quality management system and for the establishment of third-party certification procedures.
This document also gives guidance on the assessment of conformity of GRP-UP manholes and inspection chambers (see EN 15383 for additional information). Pipes (see EN ISO 23856) are used for manufacturing the shafts and chamber units. Additional statements as needed to assess the conformity of manholes and inspection chambers are given in Annex F.
NOTE 1   For the purpose of this document, the term polyester resin (UP) also includes vinyl-ester resins (VE).
NOTE 2   If third-party certification is involved, the certification body is accredited to ISO/IEC 17065 or EN ISO/IEC 17021 [3] as applicable.

This document specifies the properties of piping system components made from glass-reinforced thermosetting plastics (GRP) based on unsaturated polyester resin (UP). It is suited for all types of water supply, drainage and sewerage with or without pressure. Types of water supply include, but are not limited to, raw water, irrigation, cooling water, potable water, salt water, sea water, penstocks in power plants, processing plants and other water-based applications. This document is applicable to GRP UP piping systems, with flexible or rigid joints with or without end thrust load-bearing capability, primarily intended for use in direct buried installations.
NOTE 1   For the purpose of this document, the term polyester resin (UP) also includes vinyl-ester resins (VE).
NOTE 2   Piping systems conforming to this document can also be used for non-buried applications, provided the influence of the environment and the supports are considered in the design of the pipes, fittings and joints.
NOTE 3   This document can also apply for other installations, such as slip-lining rehabilitation of existing pipes.
NOTE 4   ISO 10467 and ISO 10639, which are replaced by this document, are also referenced in ISO 25780, which specifies requirements for GRP-pipes used for jacking installation.
The requirements for the hydrostatic pressure design of pipes referring to this document meet the requirements of ISO/TS 20656-1 and the general principle for the reliability of structures detailed in ISO 2394 and in EN 1990. These International Standards provide procedures for the harmonization of design practices and address the probability of failure, as well as possible consequences of failures. The design practices are based on a partial safety factor concept, as well as on risk management engineering.
This document is applicable to circular pipes, fittings and their joints of nominal sizes from DN 50 to DN 4000, which are intended to be used for the conveyance of water, sewage and drainage at normal service conditions, with or without pressure.

This European Standard applies to
a)   manholes, when made from glass-reinforced thermosetting plastics (GRP) based on polyester resin (UP);
b)   inspection chambers, when made from glass-reinforced thermosetting plastics (GRP) based on polyester resin (UP) which are intended to be used with inverts which are at a depth not exceeding 2 m.
These products are intended to be used within a drain or sewer system operating without pressure or occasionally at a head of pressure up to 1 bar.
It applies to products, and their joints, intended for use in buried installations and to be installed by open-trench techniques.
The units have a circular shape with nominal sizes not exceeding the maximum nominal size specified in EN 14364.
The intended use of these products is to provide access to, buried drain or sewer systems for the conveyance of waste water at temperatures up to 50 °C, without pressure or occasionally at a head of pressure up to 1 bar, outside buildings and installed in areas subjected to vehicle and/or pedestrian traffic.
It specifies definitions including symbols, requirements and characteristics of manholes, inspection chambers, joints, materials, test methods and marking.
NOTE   It is the responsibility of the purchaser or specifier to make the appropriate selections, taking into account their particular requirements and any relevant national regulations and installation practices or codes.

This Technical Specification, which is a guidance document for use with a structural analysis procedure for below ground installations, covers limits applicable to glass-reinforced thermosetting plastics (GRP) pipes used for the conveyance of liquids under pressure or gravity conditions.
This document does not specify a particular structural analysis procedure but gives guidance on the selection of a structural analysis procedure. It concludes that any established structural analysis procedure may be used provided it includes the assessment of short and long-term deflection and buckling resistance.
Products complying to the applicable GRP product standards EN 1796 or EN 14364, which are not subject to internal pressure, are suitable as long as the analysis shows that the long-term deflection of the installed pipes is limited to 6 %, which is the basic assumption of the GRP pipe product standards. Products complying with the applicable system standards (EN 1796 or EN 14364), which are subject to internal pressure, are suitable as long as the analysis shows that the initial deflection of the installed pipes does not exceed 3 %.
NOTE   The approach followed when preparing a general structural analysis procedure does not depend on the nominal size(s) of the pipe(s).
A suitable structural analysis procedure should normally be capable of being used for pipes operating at different temperatures provided that the corresponding temperature re-rating factors for the relevant pipe properties are applied, as specified in the referring standard(s). Nevertheless, high service temperatures may require an additional analysis of the longitudinal stresses and strains and/or a special design of the joints.
Normal structural analysis procedures are intended to cover normal soil installation conditions. Pipes to be designed for installations in abnormal or unusual conditions, e.g. in quick soils or a marine sea-bed, may require special engineering. Some structural analysis procedures may include axial effects depending upon the type of joint used.

This Technical Specification (CEN/TS) specifies recommended practices for the underground installation of piping systems made of glass-reinforced thermosetting plastics based on unsaturated polyester resin (GRP UP), intended to be used for pressure or non-pressure water or sewerage applications and complying with, as applicable, EN 14364 and/or EN 1796. It is applicable to GRP-UP piping systems of nominal sizes from DN 100 to DN 4000 which are intended to be used for the conveyance of liquids at temperatures up to 50 °C and at pressures of 0,5 bar and greater.
Design procedures, the determination of long-term safety factors based on a semi-probabilistic approach, surge allowance and allowable negative pressures for buried GRP pipe applications are addressed in CEN/TS 14807 [1].
Piping systems conforming to EN 1796 or EN 14364 can also be used for above-ground applications provided the influence of the environment and the supports is considered in the design of the pipes and joints. It is recommended to refer to ISO/TR 10986 [4] for guidelines for the installation of above-ground flexible jointed pipes.
NOTE   It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into account their particular requirements and any relevant national regulations and installation practices or codes.

This European Standard applies to pipes and fittings made from polyester resin concrete (PRC, see 3.1.23), intended to be used within a drain or sewer system operating without pressure. It applies to products for use in buried installations to be installed by open-trench techniques or pipe jacking.
It applies to pipes, fittings and their joints of nominal sizes from DN 150 to DN 3000 for circular cross-sections, from WN/HN 300/450 to WN/HN 1400/2100 for egg-shaped cross-sections and from DN 800 to DN 1800 for kite-shaped cross-sections.
The intended use of these products is for the conveyance of sewage, rainwater and surface water at temperatures up to 50 °C, without pressure or occasionally at a head of pressure up to 0,5 bar ), and installed in areas subjected to vehicle and/or pedestrian traffic.
NOTE 1   The attention of readers is drawn to applicable requirements contained in EN 476.
It specifies definitions, requirements and characteristics of pipes, fittings, joints, materials, test methods and marking.
The pipes are classified on the basis of the intended method of installation and cross-sectional shape.
NOTE 2   It is the responsibility of the purchaser or specifier to make the appropriate selections, taking into account their particular requirements and any relevant national regulations and installation practices or codes.

This standard specifies a method for determining the time to failure of glass-reinforced thermosetting plastics (GRP) pipes under internal hydrostatic pressure at a specified temperature. The external environment can be air or water.
NOTE   For other internal or external environments the referring standard should specify any additional requirement.

This Technical Report describes a method for determining the mean abrasion of the inner surface of glass-reinforced thermosetting polyester resin (GRP) pipes conforming to EN 14364, measured after a defined number of test cycles of a specified water/abrasive mixture.
NOTE   The test is performed on a semi-circular channel-pipe test-piece.

This European Standard specifies units made from polyester resin concrete (PRC, see 3.1.18), and their joints, for the construction of inspection chambers with inverts not exceeding 2 m deep and for manholes, intended to be used within a drain or sewer system operating without pressure. It applies to products for use outside buildings in buried installations to be installed by open-trench techniques.
This document applies to nominal sizes from DN 600 to DN 3000 for chamber rings and shaft rings having a circular shape.
The intended use of these products is to provide access to buried drain or sewer systems for the conveyance of wastewater, i.e. sewage, rainwater and surface water, at temperatures up to 50 °C, without pressure or occasionally at a head of pressure up to 0,5 bar ), and installed in areas subjected to vehicle and/or pedestrian traffic and outside buildings.
NOTE 1   The attention of readers is drawn to applicable requirements contained in EN 476.
This standard specifies definitions, requirements and characteristics of units and their joints for the construction of manholes and inspection chambers, of materials, test methods, marking and evaluation of conformity.
The units are classified on the basis of its type and the type of structure they are intended to be used.
NOTE 2   It is the responsibility of the purchaser or specifier to make the appropriate selections, taking into account their particular requirements and any relevant national regulations and installation practices or codes.

This European Standard specifies test methods for flexible non-thrust resistant socket-and-spigot joints with elastomeric sealing elements for buried and above ground glass-reinforced thermosetting plastics (GRP) pipeline applications. It covers methods of test for the leaktightness and resistance to damage of the joint only, when subject to specified combinations of longitudinal extension (draw), angular movement (angular deflection), compression (misalignment) perpendicular to the pipe axis and internal pressure. This European Standard is applicable to joints for either pressure or non-pressure applications.
NOTE   The joints tested in accordance with this European Standard are subjected to conditions which measure their ability to function and thereby prove the design of the joint, especially for type test purposes.
These test procedures are applicable to joints for pipes and fittings of all nominal sizes. The tests are suitable for the evaluation of joints intended for applications in which the liquids are conveyed at temperatures specified in the referring standards.

This standard specifies six test methods for the determination of the apparent initial tensile strength in the circumferential direction per unit length of glass-reinforced thermosetting plastics (GRP) pipes. The burst test (method A) is suitable for all types and sizes of pipes. It is the preferred method for pipes up to and including DN 600.

This standard specifies three test methods for determining the longitudinal tensile properties of pipes of glass-reinforced thermosetting plastics (GRP). The properties which can be determined are: - the longitudinal tensile strength; - the percentage ultimate elongation; - the longitudinal modulus of elasticity. Method A uses for the test piece(s) a longitudinal strip cut from a pipe. Method B uses a specified length of the full cross section of the pipe. Method C uses a notched plate cut from a pipe wall section.

This standard specifies two test methods, designated method A and method B, for rapid testing of the leaktightness of glass-reinforced thermosetting plastics (GRP) pipes and fittings under short-term internal pressure. Method A is a hydraulic test applicable to a pipe under uniaxial stress. Method B is a pneumatic test applicable pipes and fittings. For pipes it is intended to be complementary to method A, not an alternative test.

This standard specifies methods for determining the initial specific ring stiffness of glass-reinforced thermosetting plastics (GRP) pipes. Two methods are given and within the specified deflection limits each is equally valid and may be used for any diameter.

This European Standard applies to a) manholes, when made from glass-reinforced thermosetting plastics (GRP) based on polyester resin (UP); b) inspection chambers, when made from glass-reinforced thermosetting plastics (GRP) based on polyester resin (UP) which are intended to be used with inverts which are at a depth not exceeding 2 m. These products are intended to be used within a drain or sewer system operating without pressure or occasionally at a head of pressure up to 1 bar. It applies to products, and their joints, intended for use in buried installations and to be installed by open-trench techniques. The units have a circular shape with nominal sizes not exceeding the maximum nominal size specified in EN 14364. The intended use of these products is to provide access to, buried drain or sewer systems for the conveyance of waste water at temperatures up to 50 °C, without pressure or occasionally at a head of pressure up to 1 bar, outside buildings and installed in areas subjected to vehicle and/or pedestrian traffic. It specifies definitions including symbols, requirements and characteristics of manholes, inspection chambers, joints, materials, test methods and marking. NOTE It is the responsibility of the purchaser or specifier to make the appropriate selections, taking into account their particular requirements and any relevant national regulations and installation practices or codes.

This standard specifies a method for determining the time to failure of glass-reinforced thermosetting plastics
(GRP) pipes under internal hydrostatic pressure at a specified temperature. The external environment can be
air or water.
NOTE For other internal or external environments the referring standard should specify any additional requirement.

This standard specifies the requirements for GRP manholes, inspection chambers and ancillary fittings, with circular chamber and shaft sections, for use within a drain or sewer system under gravity or at low head of pressure, limited by non-pressure classification as defined in clause 3.
This European standard covers components to be used in systems for the conveyance of one or more of the following fluids:
-  domestic wastewater
-  surface water and
-  other waste waters (e.g. trade effluent).
Products covered by this standard are either complete manholes, inspection chambers and ancillary fittings or individual units for the construction of manholes, inspection chambers or ancillary fittings.
It specifies definitions, material specification and properties, types, characteristics, requirements, test methods, marking.

This Technical Specification gives guidance on the assessment of conformity of GRP-UP (glass-reinforced thermosetting resins based on unsaturated polyesters) piping products and assemblies in accordance with EN 1796 and EN 14364 intended to be included in the manufacturer’s quality plan as part of the quality management system and for the establishment of third-party certification procedures.
This Technical Specification also gives guidance on the assessment of conformity of GRP-UP manholes and inspection chambers in accordance with prEN 15383. Pipes according to EN 14364 are used for manufacturing the shafts and chamber units. Additional statements as needed to assess the conformity of manholes and inspection chambers are given in Annex F.
NOTE 1   It is recommended that the quality management system conforms to or is no less stringent than the relevant requirements to EN ISO 9001 [3].
NOTE 2    If third-party certification is involved, it is recommended that the certification body is accredited to EN 45011 [1], EN 45012 [2] or EN ISO/IEC 17021 [5], as applicable.

This European Standard specifies the required properties of the piping system and its components made from glass-reinforced thermosetting plastics (GRP) based on unsaturated polyester resin (UP) intended to be used for drainage or sewerage, including culverts, with or without pressure. In a pipework system, pipes and fittings of different nominal pressure and stiffness ratings may be used together.
It is the responsibility of the purchaser or specifier to make the appropriate selections taking into account their particular requirements and any relevant national regulations and installation practices or codes.
This European Standard is applicable to GRP-UP, with flexible or rigid joints (see 3.33 and 3.34), primarily intended for use in buried installations.
NOTE   Piping systems conforming to this European Standard can be used also for non-buried applications provided that the influence of the environment, e.g. from UV-radiation, and the supports are considered in the design of the pipes, fittings and joints.
It is applicable to pipes, fittings and their joints of nominal sizes from DN 100 to DN 4000, which are intended to be used for the conveyance of surface water or sewage at temperatures up to 50 °C, with or without pressure.
This European Standard covers a range of nominal sizes, nominal stiffnesses and nominal pressures.
Clause 6 is applicable to fittings made using any of the following techniques:
a)   fabricated from straight pipe;
b)   moulded by:
1)   filament winding;
2)   tape winding;
3)   contact moulding;
4)   hot or cold press moulding.
This European standard is applicable to the joints to be used in GRP-UP piping systems to be used for the conveyance of water, both buried and non-buried. It is applicable to joints, which are or are not intended to be resistant to axial loading. It covers requirements to prove the design of the joint. It specifies type test performance requirements for the following joints as a function of the declared nominal pressure rating of the pipeline or system:
c)   socket-and-spigot (either integral with pipe or sleeve coupling) or mechanical joint;
d)   locked socket-and-spigot joint;
e)   cemented or wrapped joint;
f)   bolted flange joint.
Recommended practices for the installation of buried pipes made in accordance with this standard is addressed in CEN/TS 14578. Guidelines for the structural analysis of buried GRP-UP pipelines are addressed in CEN/TS 14807.
Guidance for the Assessment of Conformity of products made in accordance with this standard is addressed in CEN/TS 14632.

This European Standard specifies the required properties of the piping system and its components made from glass-reinforced thermosetting plastics (GRP) based on unsaturated polyester resin (UP) intended to be used for water supply (drinking or raw) with or without pressure. In a pipework system, pipes and fittings of different nominal pressure and stiffness ratings may be used together.
It is the responsibility of the purchaser or specifier to make the appropriate selections taking into account their particular requirements and any relevant national regulations and installation practices or codes.
This European Standard is applicable to GRP-UP, with flexible or rigid joints (see 3.33 and 3.34), primarily intended for use in buried installations.
NOTE   Piping systems conforming to this European Standard can also be used for non-buried applications provided that the influence of the environment, e.g. from UV-radiation, and the supports are considered in the design of the pipes, fittings and joints.
It is applicable to pipes, fittings and their joints of nominal sizes from DN 100 to DN 4000, which are intended to be used for the conveyance of water at temperatures up to 50 °C, with or without pressure.
This European Standard covers a range of nominal sizes, nominal stiffnesses and nominal pressures.
This European Standard is applicable to fittings made using any of the following techniques:
a)   fabricated from straight pipe;
b)   moulded by:
1)   filament winding;
2)   tape winding;
3)   contact moulding;
4)   hot or cold press moulding.
This European Standard is applicable to the joints to be used in GRP-UP piping systems to be used for the conveyance of water, both buried and non-buried. It is applicable to joints, which are or are not intended to be resistant to axial loading. It covers requirements to prove the design of the joint. It specifies type test performance requirements for the following joints as a function of the declared nominal pressure rating of the pipeline or system:
c)   socket-and-spigot (either integral with pipe or sleeve coupling) or mechanical joint;
d)   locked socket-and-spigot joint;
e)   cemented or wrapped joint;
f)   bolted flange joint.
Recommended practices for the installation of buried pipes made in accordance with this standard is addressed in CEN/TS 14578. Guidelines for the structural analysis of buried GRP-UP pipelines are addressed in CEN/TS 14807.
Guidance for the Assessment of Conformity of products made in accordance with this standard is addressed in CEN/TS 14632.

This Technical Specification (CEN/TS) specifies recommended practices for installing piping systems made of glass-reinforced thermosetting plastics based on unsaturated polyester resin (GRP-UP), intended to be used for pressure or non-pressure water or sewerage applications. It is applicable to GRP-UP piping systems of nominal sizes from DN 100 to DN 3000 which are intended to be used for the conveyance of liquids at temperatures up to 50 °C and at pressures of 0,5 bar and greater.
NOTE 1    Piping systems conforming to prEN 1796 [4] or prEN 14364 [5] can also be used for above-ground applications provided the influence of the environment and the supports is considered in the design of the pipes and joints.
NOTE 2    It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into account their particular requirements and any relevant national regulations and installation practices or codes.

This European Standard applies to
a)   manholes, when made from glass-reinforced thermosetting plastics (GRP) based on polyester resin (UP);
b)   inspection chambers, when made from glass-reinforced thermosetting plastics (GRP) based on polyester resin (UP) which are intended to be used with inverts which are at a depth not exceeding 2 m.
These products are intended to be used within a drain or sewer system operating without pressure or occasionally at a head of pressure up to 1 bar.
It applies to products, and their joints, intended for use in buried installations and to be installed by open-trench techniques.
The units have a circular shape with nominal sizes not exceeding the maximum nominal size specified in EN 14364.
The intended use of these products is to provide access to, buried drain or sewer systems for the conveyance of waste water at temperatures up to 50 °C, without pressure or occasionally at a head of pressure up to 1 bar, outside buildings and installed in areas subjected to vehicle and/or pedestrian traffic.
It specifies definitions including symbols, requirements and characteristics of manholes, inspection chambers, joints, materials, test methods and marking.
NOTE   It is the responsibility of the purchaser or specifier to make the appropriate selections, taking into account their particular requirements and any relevant national regulations and installation practices or codes.

This standard specifies a method for testing the ability of glass-reinforced thermosetting plastics (GRP) pipes to withstand specified levels of initial ring deflection without displaying surface damage and/or structural failure.

This standard specifies a method for assessing the resistance of glass-reinforced plastics (GRP) pipes to cyclic internal pressure. This standardis applicable to pipes of nominal size up to and including DN 600. Note: Whilst this standard refers to pipes the procedures described can be applied to fittings.

This Technical Specification gives guidance for parties involved in the assessment of conformity of piping systems made from GRP-UP (glass-reinforced thermosetting resins based on unsaturated polyesters) intended to be used for drainage, sewerage or water supply. It contains procedures for the assessment of conformity to the requirements in the relevant system standards for materials, pipes, fittings and joints.
NOTE 1    These procedures can be included in the manufacturer's quality plan as part of his quality system, which should conform to EN ISO 9001[1] or other systems, as applicable.
NOTE 2    This Technical Specification can be included in a quality system subject to third party certification of conformity by a certification body that is accredited to EN 45011[2] or EN 45012[3], as applicable.

This standard specifies a method for determining the time to failure of glass-reinforced thermosetting plastics (GRP) pipes under internal hydrostatic pressure at a specified temperature. The external environment can be air or water.
NOTE   For other internal or external environments the referring standard should specify any additional requirement.

This standard specifies a method for determining the long-term behaviour of glass-reinforced thermosetting plastics (GRP) pipes under internal hydrostatic pressure at a specified temperature. Note: For other internal or external environments the referring standard should specify any additional requirement.

This standard specifies a method for determining by extrapolation the long-term ultimate relative ring deflection of glass-reinforced plastics (GRP) pipes under wet conditions. Two methods of loading are given, depending upon the use of plates or beam bars. Note: Either method may be used for measurements of relative deflection up to 28%. When it is expected that this level is exceeded then the procedure is limited to the use of beam bars.

This standard specifies methods of test for cemented socket and spigot joints for plastics piping systems of glass-reinforced thermosetting plastics (GRP) forpressure and non-pressure applications. This standard is only applicable to the joint and covers methods of test to prove its design. This test procedure is applicable to joints for pipes and fittings of all nominal sizes.

This standard specifies methods of test for rigid locked socket and spigot joints using elastomeric sealing rings for plastics piping systems of glass-reinforced thermosetting plastics (GRP) for pressure and non-pressure applications. This standard is only applicable to the joint and covers methods of test to prove its design. This test procedure is applicable to joints for pipes and fittings of all nominal sizes.

This standard specifies methods of test for joints with bolted flanges for plastics piping systems of glass-reinforced thermosetting plastics (GRP) for buried and above ground pipelines. This standard is only applicable to the jointand covers methods of test to prove its design.

This part of prEN 1115 specifies the general aspects of glass-reinforced thermosetting plastics based on unsaturated polyester resin (GRP-UP) piping systems in the field of underground drainage and sewerage under pressure. In conjunction with Parts 2, 3, 5, 6 and 7 prEN 1115 it is applicable to GRP-UP piping systems with flexible, reduced-articulation or rigid joints primarily intended for use in buried installations.

This Part of prEN 1636 specifies the characteristics of the fitness for purpose of glass-reinforced thermosetting plastics based on unsaturated polyester resin (GRP-UP) piping systems intended to be used for non-pressure drainage and sewerage. It also specifies the relevant test parameters for the methods referred to in this standard. It is applicable to the joints bo be used in GRP-UP piping systems to be used for the conveyance of surface water or sewage below ground, outside buildings, at temperatures up to 50 oC.

This part of prEN 1636 specifies the characteristics of fittings made from glass-reinforced thermosetting plastics pipes or moulded based on unsaturated polyester resin (GRP-UP) intended to be used for non-pressure drainage and sewerage. It also specifies the test parameters for the test methods referred to in this standard. It is applicable to fittings intended to be used for the conveyance of surface water or sewage, below ground, outside buildings, at temperatures up to 50 oC.

This part of prEN 1115 specifies the characteristics of fittings made from glass-reinforced thermosetting plastics pipes or moulded based on polyester resin (GRP-UP) intended to be used in underground drainage and sewerage under pressure. It also specifies the test parameters for the test methods referred to in this standard. It is applicable to fittings intended to be used for the conveyance of surface water or sewerage under pressure, below ground, outside buildings, at temperatures up to 50 °C.

This part of prEN 1115 specifies the characteristics of the fitness for purpose of glass-reinforced thermosetting plastics based on polyester resin (GRP-UP) piping systems intended to be used in underground drainage and sewerage under pressure. It also specifies the relevant test parameters for the test methods referred to in this standard.

This part of prEN 1636 specifies practices for installing piping systems made ofglass-reinforced thermosetting plastics based on unsaturated polyester resin (GRP-UP), with or without a thermoplastic liner, intended to be used for non-pressure drainage and sewerage. It is applicable to RP-UP piping systems for the conveyance of surface water or sewage below ground, at temperatures up to 50 oC.