BSI PD ISO/TS 20656-1:2017
$167.15
Plastics piping systems. General rules for structural design of glass-reinforced thermosetting plastics (GRP) pipes – Buried pipes
| Published By | Publication Date | Number of Pages |
| BSI | 2017 | 36 |
This document 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.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 6 | Foreword |
| 7 | Introduction |
| 9 | 1 Scope 2 Normative references 3 Terms and definitions |
| 10 | 4 Partial factor method 4.1 General 4.2 Reliability index, β |
| 12 | 4.3 Sensitivity index, α 4.4 Quality management |
| 13 | 5 Partial factors for effects of actions 5.1 General 5.2 Partial factors for internal pressure 5.2.1 General |
| 14 | 5.2.2 Model uncertainty |
| 15 | 5.2.3 Uncertainty of pressure 5.2.4 Uncertainty of long-term pressure |
| 16 | 5.2.5 Uncertainty of short-term pressure |
| 17 | 5.2.6 Uncertainty of thickness and E-modulus 5.2.7 Uncertainty of diameter 5.2.8 Combined uncertainty and partial factor for effects of pressure |
| 20 | 5.3 Partial factors for soil and traffic load 5.3.1 General |
| 22 | 5.3.2 Uncertainty of installation parameters 5.3.3 Uncertainty of deflection model |
| 23 | 5.3.4 Uncertainty in traffic load 5.3.5 Uncertainty in pipe stiffness 5.3.6 Uncertainty of deflection measurement 5.3.7 Deflection lag factor 5.3.8 Uncertainty of model – Stress and strain calculation |
| 24 | 5.3.9 Strain assessment through curvature measurement 5.3.10 Combined uncertainty of installation parameters 5.3.11 Partial factors for effects of bending |
| 25 | 5.4 Combined effects of pressure and bending 6 Partial factors for resistance 6.1 Concept |
| 26 | 6.2 Design value for resistance 6.2.1 General 6.2.2 Long-term resistance and conversion factor, η |
| 27 | 6.2.3 Short-term resistance |
| 29 | Annex A (normative) Recommended values for pressure safety factors |
| 30 | Annex B (normative) Test data analysis |
| 32 | Bibliography |
