ISO 25780:2011

INTERNATIONAL ISO
STANDARD 25780
First edition
2011-05-15

Plastics piping systems for pressure and
non-pressure water supply, irrigation,
drainage or sewerage — Glass-reinforced
thermosetting plastics (GRP) systems
based on unsaturated polyester (UP)
resin — Pipes with flexible joints
intended to be installed using jacking
techniques
Systèmes de canalisations en matières plastiques pour l'alimentation
en eau avec ou sans pression, pour l'irrigation ou l'assainissement —
Systèmes en matières plastiques thermodurcissables renforcés de
verre (PRV) à base de résine de polyester non saturé (UP) — Tubes
avec assemblages flexibles destinés à être installés par les techniques
de poussée




Reference number
ISO 25780:2011(E)
©
ISO 2011

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ISO 25780:2011(E)

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©  ISO 2011
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ii © ISO 2011 – All rights reserved

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ISO 25780:2011(E)
Contents Page
Foreword .iv
1 Scope.1
2 Normative references.1
3 Terms and definitions .2
4 Requirements.11
4.1 Classification .11
4.2 Pipe properties .11
4.3 Materials .12
4.4 Pipe wall construction .13
4.5 Reference conditions for testing .14
4.6 Elapsed time, x, for determination of long-term properties .14
4.7 Joint properties .14
5 Pipes .16
5.1 Geometrical characteristics .16
5.2 Mechanical characteristics.19
5.3 Resistance to strain corrosion.20
5.4 Longitudinal compressive strength .20
5.5 Permissible jacking forces .21
5.6 Specific initial longitudinal compressive modulus, E .23
c,m
5.7 Resistance of pressure pipes to internal pressure.23
6 Marking.23
7 Joint performance .23
7.1 General requirements .23
7.2 Interchangeability.
...