Pipes, fittings and  inspection chambers are parts of rainwater  or waste water drains for property drainage. They serve to ensure the safe discharge of surface water and/or waste water from the property at all times. It must also be ensured that no dangers to buildings, built over areas or groundwater and soil arise from leaks, deformations or loss of stability.

Regulatory framework

In this work area, DIBt grants national technical approvals (abZ) and/or general construction technique permits (aBG) for construction products and techniques that significantly deviate from the applicable Technical Building Rules, cf. in particular MVV TB, Section B 2.2.6 'Property drainage systems' and Section C 2.12.1 'Pipes, fittings and sealants for drains and sewers'.

European Technical Assessments (ETAs) can also be issued for corresponding products.

The technical rules to be observed for the installation of drains inside or outside the building include:

• DIN EN 476 – General requirements for components used in drains and sewers
• DIN EN 752 – Drain and sewer systems outside buildings
• DIN 1986-100 – Drainage systems on private ground – Part 100: Specifications in relation to DIN EN 752 and DIN EN 12056
• EN 124 (series) – Gully tops and manhole tops for vehicular and pedestrian areas
• EN 1253 (series) – Gullies for buildings
• DIN EN 1610 – Installation and testing of drains and sewers
• DWA-A 118 – Hydraulic design and verification of drain and sewer systems
• DWA-A 127 – Structural analysis of drains and sewers
• DIN 4102-1 – Fire behaviour of building materials and building components – Part 1: Building materials; concepts, requirements and tests
• DIN EN 13501-1 – Fire classification of construction products and building elements – Part 1: Classification using data from reaction to fire tests