EN 805:2000

Foreword
Introduction
1 Scope
2 Normative references
3 Definitions
   3.1 Pressures
   3.2 System
   3.3 Components
   3.4 Diameters
   3.5 Installation
   3.6 Hydraulic design
   3.7 Structural design
4 Application of standards and regulations
5 Requirements for water supply systems
   5.1 Water quality
   5.2 Design life
   5.3 Demand for water
   5.4 System security
6 Service objectives
7 Rehabilitation
8 Design
   8.1 Design objectives
   8.2 Peak flow factors
   8.3 Hydraulic design
   8.4 Structural design
   8.5 System layout
   8.6 Protection against aggressive environment
   8.7 Reservoirs
   8.8 Pumping stations
   8.9 Documentation
9 General requirements for product standards
   9.1 General
   9.2 Materials
   9.3 Dimensions
   9.4 Structural design
   9.5 Mechanical requirements
   9.6 Water tightness
   9.7 Joints
   9.8 Protective measures
   9.9 Durability
   9.10 Test methods
   9.11 Interconnection of products
   9.12 Quality control
   9.13 Marking
10 Installation
   10.1 General requirements
   10.2 Pipe trenches
   10.3 Installation of pipeline components
   10.4 Pipe joints
   10.5 Protection against corrosion and contamination
   10.6 Embedment and main backfill
   10.7 Records of tests during installation
11 Testing of pipelines
   11.1 General requirements
   11.2 Safety
   11.3 Pressure test
12 Disinfection
   12.1 General
   12.2 Preparation for disinfection
   12.3 Selection of disinfectant
   12.4 Disinfection procedures
   12.5 Microbiological clearance and reporting
13 Additional requirements
14 Operation
   14.1 Inspection and monitoring
   14.2 Maintenance
15 Updating of documentation
Annex A (informative) Guidance to EN 805
Annex B (informative) A-deviations
Annex C (informative) Bibliography

This standard comprises: - general requirements for water supply systems outside buildings including potable water mains and service pipes, service reservoirs, other facilities and raw water mains but excluding treatment works and water resources development; - general requirements for components; - general requirements for inclusion in product standards which may include specifications which are more stringent; - requirements for installation, site testing and commissioning.