EN 640:1994

Committees responsible
National foreword
Foreword
0. Introduction
1. Scope
2. Materials
2.1 Aggregates
2.2 Steel wire for distributed reinforcement pipes
3. Design and fabrication of pipe
3.1 General requirements
3.1.1 Wall thickness
3.2 Design of pipe
3.2.1 General
3.2.2 Combined load design criteria
3.3 Reinforcement
3.3.1 Circumferential reinforcement for reinforced
       concrete pipe
3.3.2 Circumferential reinforcement for distributed
       reinforcement pipe
3.3.3 Longitudinal reinforcement for reinforced concrete
       pipe
3.3.4 Longitudinal reinforcement for distributed
       reinforcement pipe
3.3.5 Longitudinal prestressing reinforcement
3.3.6 Placement and cover to steel
3.4 Concrete and mortar
3.4.1 Mix design
3.4.2 Concrete strength
4. Factory testing
4.1 Concrete tests
4.2 Pipe tests
4.2.1 Hydrostatic pressure tests
4.2.2 Crushing test for reinforced concrete pipe
4.2.3 Combined crushing and pressure test for
       distributed reinforcement pipe
4.2.4 Combined bending and pressure test for distributed
       reinforcement pipes
Annex A (informative) Typical design procedure

This standard covers the requirements and manufacture of circumferentially reinforced concrete pressure pipe, without steel cylinder and not circumferentially prestressed, with steel reinforcement (RCP) or a homogeneouslydistributed reinforcement composed of multiple layers of small diameter wires (DRP). Pipes shall have diameter ranging DN/ID 300 to DN/ID 4000. Larger size could be manufactured based on the concepts of this standard.