NS EN 805 : 1ED 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 Protective 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 disinfection
      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

Gives the 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. It also gives the general requirements for components and the general requirements for inclusion in product standards which may include specifications which are more stringent. Requirements for installation, site testing and commissioning are also covered.