# EPANET: [PIPES]

[PIPES]

Purpose:

Defines all pipe links contained in the network.

Format:

One line for each pipe containing:

- ID label
- ID of start node
- ID of end node
- Length, ft (m)
- Diameter, inches (mm)
- Roughness coefficient
- Minor loss coefficient
- Status (OPEN, CLOSED, or CV)

Remarks:

1. Roughness coefficient is unitless for Hazen-Williams and Chezy-Manning head loss formulas and has units of millifeet (mm) for the Darcy-Weisbach formula. Choice of head loss formula is supplied in the [OPTIONS] section.
2. Setting status to CV means that the pipe contains a check valve restricting flow to one direction.
3. If minor loss coefficient is 0 and pipe is OPEN then these two items can be dropped from the input line.

Example:

[PIPES]
;ID Node1 Node2 Length Diam. Roughness Mloss Status
;-------------------------------------------------------------
P1 J1 J2 1200 12 120 0.2 OPEN
P2 J3 J2 600 6 110 0 CV
P3 J1 J10 1000 12 120