Plastics piping systems — General rules for structural design of glass-reinforced thermosetting plastics (GRP) pipes — Part 1: Buried pipes

ISO/TS 20656-1:2017 describes how partial factors for buried GRP pipes are developed, and are primarily intended to define the necessary safety measures for GRP pipes that meet the requirements of ISO 10639, ISO 10467 and ISO 25780, and EN 1796 and EN 14364. The same methodology can be utilised for other pipe product standards, although other parameters would apply.

Systèmes de canalisation en matières plastiques - Règles générales pour la conception structurelle des tubes et raccords plastiques thermodurcissables renforcés de verre (PRV) — Partie 1: Tubes enterré

General Information

Status
Published
Publication Date
12-Jun-2017
Current Stage
9093 - International Standard confirmed
Completion Date
15-May-2024
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ISO/TS 20656-1:2017 - Plastics piping systems -- General rules for structural design of glass-reinforced thermosetting plastics (GRP) pipes
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TECHNICAL ISO/TS
SPECIFICATION 20656-1
First edition
2017-06
Plastics piping systems — General
rules for structural design of glass-
reinforced thermosetting plastics
(GRP) pipes —
Part 1:
Buried pipes
Systèmes de canalisation en matières plastiques - Règles générales
pour la conception structurelle des
tubes et raccords plastiques thermodurcissables renforcés de verre
(PRV) —
Partie 1: Tubes enterré
Reference number
ISO/TS 20656-1:2017(E)
©
ISO 2017

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ISO/TS 20656-1:2017(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2017, Published in Switzerland
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ii © ISO 2017 – All rights reserved

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ISO/TS 20656-1:2017(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Partial factor method . 2
4.1 General . 2
4.2 Reliability index, β .2
4.3 Sensitivity index, α .4
4.4 Quality management . 4
5 Partial factors for effects of actions . 5
5.1 General . 5
5.2 Partial factors for internal pressure . 5
5.2.1 General. 5
5.2.2 Model uncertainty . 6
5.2.3 Uncertainty of pressure . 7
5.2.4 Uncertainty of long-term pressure. 7
5.2.5 Uncertainty of short-term pressure . 8
5.2.6 Uncertainty of thickness and E-modulus .
...

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