NEN EN 14801 : 2006

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
5 Conditions
  5.1 General
  5.2 Constant parameters
      5.2.1 General
      5.2.2 Design life
      5.2.3 Temperature
      5.2.4 Negative pressure
      5.2.5 Unit weight of soil
      5.2.6 Native soil
  5.3 Variable parameters
      5.3.1 General
      5.3.2 Loading parameters
      5.3.3 Installation parameters
  5.4 Combined conditions
6 Determination of allowable pressures PFA, PMA, PEA
  6.1 General
  6.2 Allowable pressures
      6.2.1 Allowable operating pressure
      6.2.2 Allowable maximum operating pressure
      6.2.3 Allowable site test pressure
  6.3 Methods for the determination of allowable pressures
  6.4 Procedure for the determination of allowable pressures
Annex A (informative) Considerations regarding longitudinal
        effects
      A.1 Longitudinal effects
          A.1.1 General
          A.1.2 Failure behaviour due to longitudinal effects
          A.1.3 Failure modes
          A.1.4 Longitudinal effects
Annex B (normative) Uniform classification of soils
Annex C (informative) Application example
Annex D (informative) Information on the relationship between
        type of compaction and construction procedures
Annex E (informative) Information regarding bedding reaction
        angle
National annex NA (informative) Implementing the pressure
                  classifications
Bibliography

Applicable to components (pipes, joints, fittings, ferrules and valves), which have pressure related classification in European Standards covering products which are intended to be used for buried water supply and waste water pressure pipelines outside buildings.