Vitrified clay pipe systems for drains and sewers - Requirements for adaptors, connectors and flexible couplings Ingestion-build-183511 5 Signals and indications

5 Signals and indications

Subclauses 4

The statement of the need in a functional form is essential

using artificial light

due diligence

Vitrified clay pipe systems for drains and sewers - Requirements for adaptors, connectors and flexible couplings Ingestion-build-183511 5 Signals and indications1 Scope This European Standard specifies requirements for adaptors and connectors made from vitrified clay and or other suitable materials for use with vitrified clay pipes and fittings 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. Adaptors and connectors include insertable