CONTENTS
5
Hepworth PME Introduction
7 6 7 7 9 9
Wavin Introduction
1
General
1.1
Quantities
- Domestic waste water
2
Principles of waste water discharge 2.1 General design principles
- Overpressures and underpressures - Primary discharge system - Secondary discharge system - Restricted secondary discharge system - Air admittance valves - Direct separated discharge system - Balancing lines
2.2 Filling of pipework
10 10 11 12 12 12 12 13
2.3 Fall
2.4 Access fittings
3
Peripheral requirements for removal of waste water
3.1 Traps
3.2 Connecting pipes 3.3 Collecting pipes
3.3.1 General requirements
3.3.2 Connections to collecting pipes 14 3.3.3 Connection separations and sequence 16
3.4 Stacks
16
3.4.1 Connections to stacks
17
- Method 3.4.2 Angled sections
17 3.4.3 Stack foot and connection-free zones 17 3.4.4 Stack diameter 18
3.5 Underground pipes 3.6 Ventilation pipes 3.7 Roof penetrations
18 18 19 19 20 21 21 21 22 22
3.8 Discharge of waste water Dimensioning for waste water
4 5
Noise
5.1 The generation of noise
5.2 Noise transmission
5.3 Noise reducing measures
5.4 Fittings
3
6
Casting in heat cured concrete and extrusion shrinkage 23
Made with FlippingBook Annual report