prCEN/TR 1046

Thermoplastics piping and ducting systems - Systems outside building structures for the conveyance of water or sewage - Practices for underground installation.

Scope

This CEN Technical Report is applicable to the underground installation of themoplastics piping systems to be used for the conveyance of water or sewage under gravity and pressure conditions. It is intended to be used for pipes of nominal size up to and including DN 3000. Where in this Technical Report the term "pipe" is used then it serves also to cover any "fittings", "ancillary" products and "components". NOTE 1 It is assumed that additional recommendations and/or requirements are detailed in the individual materials System Standards. Instances where this is expected to apply include those indicated in this Technical report as follows: a) any special transportation requirements (see 4.2.6); b) maximum storage height (see 4.4.3 and 4.4.4); c) maximum storage period in direct sunlight (see 4.4.6); d) any climatic conditions requiring special storage (see 4.4.7); e) limiting initial and/or long-term deflections (see 5.1.1 and 5.1.2); f) information on mole ploughing and boring (see and 5.2), if applicable; g) longitudinal tensile modulus and strength (see 5.3.1.2); h) coefficient of thermal linear expansion (see 5.3.2.2 and Annex B); i) suitability for use in areas exposed to sunlight (see 5.3.3); j) selection of appropriate jointing system (see clause 6); k) recommended radii of curvature for cold bending (see 7.1); l) permitted rates of loss of water under test (see 8.2.1); m) if applicable the relationship between SDR and stiffness. NOTE 2Guidance and instructions concerning commissioning of systems can be found in the standards prepared byCEN/TC 164 and by CEN/TC 165 and the relevant national and/or local regulations.