EN 1796:2013

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kunststoff-Rohrleitungssysteme für die Wasserversorgung mit oder ohne Druck - Glasfaserverstärkte duroplastische Kunststoffe (GFK) auf der Basis von ungesättigtem Polyesterharz (UP)Systèmes de canalisations en plastiques pour l'alimentation en eau avec ou sans pression - Plastiques thermodurcissables renforcés de verre (PRV) à base de résine polyester non saturé (UP)Plastics piping systems for water supply with or without pressure - Glass-reinforced thermosetting plastics (GRP) based on unsaturated polyester resin (UP)91.140.60Sistemi za oskrbo z vodoWater supply systems83.120Reinforced plastics23.040.20Cevi iz polimernih materialovPlastics pipesICS:Ta slovenski standard je istoveten z:EN 1796:2013SIST EN 1796:2013en,fr,de01-april-2013SIST EN 1796:2013SLOVENSKI
STANDARDSIST EN 1796:2006+A1:20091DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1796
February 2013 ICS 23.040.01 Supersedes EN 1796:2006+A1:2008English Version
Plastics piping systems for water supply with or without pressure - Glass-reinforced thermosetting plastics (GRP) based on unsaturated polyester resin (UP)
Systèmes de canalisations en plastiques pour l'alimentation en eau avec ou sans pression - Plastiques thermodurcissables renforcés de verre (PRV) à base de résine polyester non saturé (UP)
Kunststoff-Rohrleitungssysteme für die Wasserversorgung mit oder ohne Druck - Glasfaserverstärkte duroplastische Kunststoffe (GFK) auf der Basis von ungesättigtem Polyesterharz (UP) This European Standard was approved by CEN on 14 December 2012.
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.
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Test method for the resistance to bending and pressure of end-thrust loaded joints in pipe systems . 61 A.1 Principle . 61 A.2 Apparatus . 61 A.3 Test pieces. 62 A.4 Test temperature . 62 SIST EN 1796:2013

The designation for reference or marking purposes consists of the letters DN-ID or DN-OD plus a number. 3.2 nominal stiffness SN alphanumerical designation for stiffness classification purposes, which has the same numerical value as the minimum initial specific ring stiffness value required, when expressed in Newtons per square metre (N/m2) Note 1 to entry:
The designation for reference or marking purposes consists of the letters SN plus a number (see 4.1.4). 3.3 specific ring stiffness S physical characteristic of the pipe, expressed in Newtons per square metre (N/m2) which is a measure of the resistance to ring deflection per metre length under external load and is defined by Formula (1): 3mdIES×= (1) where SIST EN 1796:2013

is the initial specific ring stiffness, in Newtons per square metre (N/m2) Note 1 to entry:
See 3.5 and 4.6. 3.8 rerating factor RRF multiplication factor that quantifies the relation between a mechanical, physical or chemical property at the service condition compared to the respective value at 23 °C and 50 % relative humidity (R.H.) 3.9 nominal pressure PN alphanumeric designation for pressure classification purposes, which has a numerical value equal to the resistance of a component of a piping system to internal pressure, when expressed in bars1) Note 1 to entry:
The designation for reference or marking purposes consists of the letters PN plus a number. 3.10 type tests tests carried out to prove that a material, component, joint or assembly is capable of conforming to the relevant requirement 3.11 quality control tests tests carried out for the purpose of process control and/or release of product 3.12 nominal length numerical designation of a pipe length which is equal to the pipe's laying length (see 3.14), expressed in metres (m), rounded to the nearest whole number Note 1 to entry: See 3.14. 3.13 total length distance between two planes normal to the pipe axis and passing through the extreme end points of the pipe including, where applicable, the affixed sockets; expressed in metres (m) 3.14 laying length total length of a pipe minus, where applicable, the manufacturer's recommended insertion depth of the spigot(s) in the socket; expressed in metres (m) 3.15 normal service conditions conveyance of surface water or sewage, in the temperature range 2 °C to 50 °C, with or without pressure, for 50 years
1) 1 bar = 105 N/m2 = 0,1 MPa. SIST EN 1796:2013

Note 1 to entry:
It is one of the parameters used to determine the minimum initial design pressure. 3.20 pressure regression ratio RRP relationship between the extrapolated mean failure pressure at 50 years to the extrapolated mean failure pressure at 6 min derived using Formula (7) as follows: meanmin,6mean,PR,PPRx= (7) where Px,mean is the extrapolated long-term (50 year) mean failure pressure; P6 min,mean is the extrapolated short-term (6 min) mean failure pressure 3.21 break condition where a test piece can no longer carry load 3.22 non-pressure pipe or fitting pipe or fitting, subject at its top to an internal pressure not greater than 1 bar 3.23 pressure pipe or fitting pipe or fitting having a nominal pressure classification which is greater than 1 bar and which is intended to be used with the internal pressure equal to or less than its nominal pressure when expressed in bars SIST EN 1796:2013

See 3.4. 3.29 minimum initial relative specific ring deflection before bore cracking occurs (y2,bore/dm)min initial relative specific ring deflection, expressed as a percentage (%), at 2 min, which a test piece is required to pass without bore cracking when tested in accordance with ISO 10466 3.30 minimum initial relative specific ring deflection before structural failure occurs (y2,struct/dm)min initial relative specific ring deflection, expressed as a percentage (%), at 2 min, which a test piece is required to pass without structural failure when tested in accordance with ISO 10466 3.31 extrapolated long-term ultimate relative ring deflection yu,wet,x/dm value, expressed as a percentage (%), at x years, derived from the ultimate relative ring deflection regression line, obtained from long-term deflection tests performed under wet conditions in accordance with ISO 10471 Note 1 to entry:
See 4.6. 3.32 minimum long-term ultimate relative ring deflection (yu,wet,x/dm)min required minimum extrapolated value, expressed as a percentage (%), at x years (see 4.6), derived from the ultimate relative ring deflection regression line obtained from long-term ultimate ring deflection tests performed under wet conditions in accordance with ISO 10471 SIST EN 1796:2013

See Figure 1. 3.36 draw D longitudinal movement of a joint, is expressed in millimetres (mm) Note 1 to entry: See Figure 1. 3.37 total draw T sum of the draw, D, and the additional longitudinal movement, J, due to the presence of angular deflection, expressed in millimetres (mm) Note 1 to entry:
See Figure 1. 3.38 misalignment M amount by which the centrelines of adjacent pipes fail to coincide
Note 1 to entry:
See Figure 1. SIST EN 1796:2013

Key D is draw J is longitudinal movement arising from angular deflection of the joint / is angular deflection of the joint T is total draw M is misalignment Figure 1 — Joint movements SIST EN 1796:2013

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. 4.1.2 Categories Pipes and fittings shall be classified according to nominal size (DN) (see 3.1), nominal pressure (PN) (see 3.9) and joint type. In addition, pipes shall include nominal stiffness (SN) (see 3.2) in their classification. 4.1.3 Nominal size The nominal size (DN) of pipes and fittings shall conform to the appropriate Tables in Clause 5. If a thermoplastics liner is present, its internal diameter shall be declared by the manufacturer. The tolerance on the diameter shall be as specified in Clause 5. 4.1.4 Nominal stiffness The nominal stiffness, SN, shall conform to one of those given in Table 1. These nominal stiffnesses correspond to the values specified in Clause 5 for the minimum initial specific ring stiffness, in Newtons per square metre (N/m2). Pipes of nominal stiffness less than SN 1250 are not intended for laying directly in the ground. Where special applications require the use of pipes having a higher nominal stiffness than those given in Table 1 the pipe shall be marked SN v, where v is the number equal to the pipes nominal stiffness. Table 1 — Nominal stiffnesses (SN) Nominal stiffnesses
(SN) 630 1 250 2 500 5 000 10 000
4.1.5 Nominal pressure The nominal pressure (PN) shall conform to one of those given in Table 2. SIST EN 1796:2013

4.2 Materials 4.2.1 General The pipe or fitting shall be constructed using chopped and/or continuous glass filaments, strands or rovings, mats or fabric, synthetic veils, and polyester resin with or without fillers and if applicable additives necessary to impart specific properties to the resin. The pipe or fitting may also incorporate aggregates, and if required, a thermoplastics liner. 4.2.2 Reinforcement The glass used for the manufacture of the reinforcement shall be one of the following types: a) a type 'E' glass, comprising primarily either oxides of Silicon, Aluminium and Calcium
(alumino-calcosilicate glass) or Silicon, Aluminium and Boron (alumino-borosilicate glass); b) a type 'C' glass, comprising primarily oxides of Silicon, Sodium, Potassium, Calcium and Boron (alkali-calcium glass with an enhanced boron trioxide content) which is intended for applications requiring enhanced chemical resistance; c) a type ‘R’ glass, comprising primarily oxides of Silicon, Aluminium, Calcium and Magnesium without added Boron. In either of these types of glass small amounts of oxides of other metals will be present. NOTE These descriptions for 'C' glass and 'E' glass are consistent with, but more specific than those given in
EN ISO 2078 [2]. The reinforcement shall be made from continuously drawn filaments of a glass conforming to type E, type C or type R, and shall have a surface treatment compatible with the resin to be used. It may be used in any form, e.g. as continuous or chopped filaments, strands or rovings, mat or fabric. 4.2.3 Resin The resin used in the structural layer (see 4.3.2) shall have a temperature of deflection of at least 70 °C when the test specimen is tested in accordance with Method A of EN ISO 75-2:2004.
NOTE Gaskets complying with EN 681-1 are deemed to satisfy the design life of the pipe systems made in accordance with this standard. 4.2.6 Metals Where exposed metal components are used, there shall not be evidence of corrosion of the components after the fitting has been immersed in an aqueous sodium chloride solution, 30 g/l, for seven days at (23 ± 2) °C. 4.3 Wall construction 4.3.1 Inner layer The inner layer shall comprise one of the following: a) a thermosetting resin layer with or without aggregates or fillers and with or without reinforcement of glass or synthetic filaments; b) a thermoplastics liner. The thermoplastic liner may require a bonding material compatible with all other materials used in the pipe construction. The resin used in this inner layer need not conform to the temperature of deflection requirements given in 4.2.3. 4.3.2 Structural layer The structural layer shall consist of glass reinforcement and a thermosetting resin, with or without aggregates or fillers. 4.3.3 Outer layer The design of the outer layer of the pipe shall take into account the environment in which the pipe is to be used. This layer shall be formed of a thermoset
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