NEN EN 295-1 : 2013

      Cooperating organizations
      National foreword
      EN foreword
1 General
      1.1 Object and field of application
      1.2 References
      1.3 Definitions
             1.3.1 Nominal size
             1.3.2 Curvature
             1.3.3 Joint assembly
             1.3.4 Bearing elements
             1.3.5 Sealing elements
             1.3.6 Fairings
             1.3.7 Minimum bore
             1.3.8 Pipe section
             1.3.9 Nominal length
2 Pipes and fittings
      2.1 Materials and manufacture
      2.2 Minimum bore
      2.3 Length
      2.4 Squareness of ends
      2.5 Deviation from straightness
      2.6 Water seal of fittings
      2.7 Angle of curvature and radius of bends
      2.8 Branch angle of junctions
      2.9 Crushing strength (FN)
      2.10 Bending tensile strength
      2.11 Bending moment resistance (BMR)
      2.12 Bond strength of adhesive used for fixing fired
             clay parts together
             2.12.1 Minimum bending tensile strength
             2.12.2 Minimum strength after immersion
      2.13 Fatigue strength under pulsating load
      2.14 Watertightness of pipes
      2.15 Chemical resistance
      2.16 Hydraulic roughness
      2.17 Abrasion resistance
      2.18 Impermeability of fittings
3 Joint assemblies
      3.1 Jointing materials
             3.1.1 Rubber sealing elements
             3.1.2 Polyurethane sealing elements
             3.1.3 Polypropylene sleeve couplings - material
                      requirements
             3.1.4 Polypropylene sleeve couplings -
                      performance requirements
             3.1.5 Other jointing materials
      3.2 Watertightness of joints
             3.2.1 Internal pressure
             3.2.2 External pressure
      3.3 Angular deflection
      3.4 Shear resistance
      3.5 Invert conformity
      3.6 Joint interchangeability
      3.7 Chemical and physical resistance to effluent
             3.7.1 Joint assemblies
             3.7.2 Jointing materials
      3.8 Thermal cycling stability
      3.9 Long-term thermal stability
4 Sampling for tests
5 Designation
6 Marking
7 Quality Assurance
Figure 1 - Joint dimensions
Table 1 - Minimum bore
Table 2 - Preferred nominal lengths
Table 3 - Deviation from straightness
Table 4 - Crushing strength (FN) in kN/m DN 100 and 150
Table 5 - Crushing strength (FN) in kN/m > DN 200
Table 6 - Bending moment resistance (BM) in kN/m for crushing
          strength values (FN) in kN/m
Table 7 - Material requirements for polyurethane sealing
          elements
Table 8 - Material requirements for polypropylene sleeve
          couplings
Table 9 - Deflection
Table 10 - Dimensions and tolerances for socket controlled
           jointing systems
Table 11 - Dimensions and tolerances for spigot controlled
           jointing systems
National Annex NA (informative)

Defines requirements for vitrified clay pipes, fittings and flexible joints for buried drain and sewer systems for the conveyance of wastewater (including domestic wastewater, surface water and rainwater) under gravity and periodic hydraulic surcharge or under continuous low head of pressure.