Name: CEN/TR 1295-3:2007
Brand: CEN

Structural design of buried pipelines under various conditions of loading - Part 3: Common method

Published date

25-07-2007

Publisher

Comite Europeen de Normalisation

Foreword
Introduction
1 Scope
2 References
3 Structural design issues
  3.1 Soils
  3.2 Pipe materials
  3.3 Types of loading
4 Principles used in Annex A (Option 1) and Annex B (Option 2)
  4.1 General
  4.2 Principles used in Annex A (Option 1)
  4.3 Principles used in Annex B (Option 2)
5 Synopsis
Annex A Structural design of buried pipelines - Option 1
      A.1 General
      A.2 Terms and definitions
      A.3 Symbols
      A.4 Principle
      A.5 Installation conditions
      A.6 Initial loads
      A.7 Soil parameters
      A.8 Load distributions
      A.9 Loads acting on the pipe
      A.10 Internal pressure
      A.11 Pipe deflection
      A.12 Analysis of bending moments, normal forces,
           stresses and strains
      A.13 Longitudinal effects
      A.14 Stability analysis (only required for flexible pipes)
      A.15 Calculated factors of safety from the design procedure
           and analysis
      A.16 Minimum factors of safety and failure probability
Annex AA Classification of soils
Annex AB Factors of safety and failure probability
Annex AC Soil mechanics background on soil moduli
Annex AD General remarks on stability analyses for buried pipes
Annex AE Finite element analysis
Annex AF Detailed notes relative to longitudinal effects
Annex AG Flowchart and worked examples
Annex B Structural design of buried pipelines - Option 2
      B.1 General
      B.2 Terms and definitions
      B.3 Symbols
      B.4 Principle
      B.5 Pipe parameters
      B.6 Installation conditions and related calculation parameters
      B.7 Stiffness criterion
      B.8 Loadings
      B.9 Load and interaction pressure distributions
      B.10 Buckling
      B.11 Ring deflection
      B.12 Bending moments, axial forces, stresses and strains
      B.13 Verification of safety in use
      B.14 Summary of design procedures and relevant verifications
      B.15 Analysis of longitudinal effects
      B.16 Analysis of seismic action
Annex BA Classification of soils
Annex BB Factors of safety and failure probability
Annex BC Background on soil moduli
Annex BD Rigid, semi-rigid and flexible pipes - A proposal for a
         definition of ranges of system behaviour
Annex BE Background of the Marston method
Annex BF Longitudinal effects - Notes of B.15
Annex BG Worked examples
Annex C Classification of soils
Annex D Factors of safety and failure probability
      D.1 Rudiments of the theory of probabilistic reliability
      D.2 Analysis of reliability of buried piping systems
      D.3 Scatter of parameters
      D.4 Results of the analysis
Annex E Longitudinal effects
      E.1 Longitudinal effects
      E.2 Failure behaviour due to longitudinal effects
      E.3 Failure modes
      E.4 Longitudinal effects
Annex F Detailed notes relative to longitudinal effects
        (according to A.13 and B.15)
Bibliography

This document specifies calculation methods for the structural design of water supply pipelines, drains and sewers, and other water industry pipelines, whether operating at atmospheric, greater or lesser pressure.It applies for the structural design of buried piping systems, made from all materials used for the conveyance of fluids under pressure or gravity conditions.Pipes to be designed for installations in abnormal or unusual conditions, e.g. in quick soils or a marine sea bed, are not covered by this document, it may require special engineering.The design of very large diameter pipe installations may require considerations to be given to other additional parameters, e.g. the homogeneity of the surrounding soil.The design method is intended to be used for pipes operating at different temperatures provided that the corresponding temperature re-rating factors for the relevant pipe properties are used as specified in the referring standard(s). Nevertheless, high services temperatures may require an additional analysis of the longitudinal stresses and strains and/or a special design of the joints.

Committee	CEN/TC 165
DocumentType	Technical Report
PublisherName	Comite Europeen de Normalisation
Status	Current

Standards	Relationship
S.R. CEN/TR 1295-3:2007	Identical
UNE-CEN/TR 1295-3:2011 IN	Identical
FD CEN/TR 1295-3 : 2008 FD	Identical

UNI 9032 : 2008	GLASS-REINFORCED THERMOSETTING PLASTICS (GRP) PIPING WITH OR WITHOUT FILLERS - GUIDANCE TO THE DEFINITION OF THE REQUIREMENTS FOR THE USE
S.R. CEN/TS 15223:2017	PLASTICS PIPING SYSTEMS - VALIDATED DESIGN PARAMETERS OF BURIED THERMOPLASTICS PIPING SYSTEMS
CEN/TR 1295-2:2005	Structural design of buried pipelines under various conditions of loading - Part 2: Summary of nationally established methods of design
PD CEN/TR 1295-4:2015	Structural design of buried pipelines under various conditions of loading Parameters for reliability of the design
DIN EN 752:2015-10 (Draft)	DRAIN AND SEWER SYSTEMS OUTSIDE BUILDINGS - SEWER SYSTEM MANAGEMENT
DIN EN 14801 E : 2006	CONDITIONS FOR PRESSURE CLASSIFICATION OF PRODUCTS FOR WATER AND WASTEWATER PIPELINES
I.S. EN 752:2017	DRAIN AND SEWER SYSTEMS OUTSIDE BUILDINGS - SEWER SYSTEM MANAGEMENT
CEN/TS 15223:2017	Plastics piping systems - Validated design parameters of buried thermoplastics piping systems
PD CEN/TR 1295-2:2005	Structural design of buried pipelines under various conditions of loading Summary of nationally established methods of design
EN 752:2017	Drain and sewer systems outside buildings - Sewer system management
CEN/TR 1295-4:2015	Structural design of buried pipelines under various conditions of loading - Part 4: Parameters for reliability of the design
S.R. CEN/TR 1295-4:2015	STRUCTURAL DESIGN OF BURIED PIPELINES UNDER VARIOUS CONDITIONS OF LOADING - PART 4: PARAMETERS FOR RELIABILITY OF THE DESIGN
DIN EN 14801:2006-09	CONDITIONS FOR PRESSURE CLASSIFICATION OF PRODUCTS FOR WATER AND WASTEWATER PIPELINES

DIN 18196:2011-05	Earthworks and foundations - Soil classification for civil engineering purposes
EN 1295-1:1997	Structural design of buried pipelines under various conditions of loading - Part 1: General requirements
NFT 57 105 : 1977	METHODS OF TESTING PLASTICS - GLASS REINFORCED PLASTICS - DETERMINATION OF FLEXURAL PROPERTIES - THREE POINT METHOD
EN 1991-2:2003/AC:2010	EUROCODE 1: ACTIONS ON STRUCTURES - PART 2: TRAFFIC LOADS ON BRIDGES
ATV-DVWK-A 127 : 2000	STANDARDS FOR THE STRUCTURAL CALCULATION OF DRAINS AND SEWERS
EN 805:2000	Water supply - Requirements for systems and components outside buildings
DIN 18127:2012-09	SOIL, INVESTIGATION AND TESTING - PROCTOR-TEST
EN 476:2011	General requirements for components used in drains and sewers
CEN/TR 1295-2:2005	Structural design of buried pipelines under various conditions of loading - Part 2: Summary of nationally established methods of design
NFP 94 110 : 1991	SOLS : RECONNAISSANCE ET ESSAIS - ESSAI PRESSIOMETRIQUE MENARD
EN 1610:2015	Construction and testing of drains and sewers
EN 1998-1:2004/A1:2013	EUROCODE 8: DESIGN OF STRUCTURES FOR EARTHQUAKE RESISTANCE - PART 1: GENERAL RULES, SEISMIC ACTIONS AND RULES FOR BUILDINGS
EN 1998-4:2006	Eurocode 8 - Design of structures for earthquake resistance - Part 4: Silos, tanks and pipelines
ENV 1046:2001	Plastics piping and ducting systems - Systems outside building structures for the conveyance of water or sewage - Practices for installation above and below ground
EN 1998-5:2004	EUROCODE 8: DESIGN OF STRUCTURES FOR EARTHQUAKE RESISTANCE - PART 5: FOUNDATIONS, RETAINING STRUCTURES AND GEOTECHNICAL ASPECTS

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CEN/TR 1295-3:2007

Structural design of buried pipelines under various conditions of loading - Part 3: Common method

Table of Contents

Abstract

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Standards Referenced By This Book

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