Closed Conduit

Closed Conduit

A conduit is a carrier or conveyance for some material, such as water. In stormwater drainage it can be a pipe with a roof or enclosed shape so that it can operate under pressure when the hydraulic grade line rises higher than the obvert and the conduit runs full. DRAINS models both part-full and full, pressurised conduits.

DRAINS currently allows for circular and rectangular closed conduits. Other sections can be modelled as irregular open channels.

    • Related Articles

    • Obvert (or soffit)

      This is the highest point on the inner surface of a pipe or closed conduit.

    • Invert

      For a pipe or closed conduit this is the lowest point on its interior surface. For a channel it is the lowest point on the channel bed. Levels of inverts are used to define the vertical alignment of pipelines and channels.

    • Prismatic Open Channel property sheet

      This window shows a diagram of a trapezoidal open channel, with text boxes in which the bottom width, side slopes and height can be entered or displayed. Asymmetric channels with different side slopes on each side can be accommodated. For vertical ...

    • DRAINS spreadsheet formats and data

      The spreadsheet copy options in the Edit menu of DRAINS can transfer input data and results to spreadsheets and other programs that can interface with DRAINS. Data can be transferred both ways - from and to DRAINS. This has the following advantages: ...

    • Cross-section

      This is a transverse view of part of a pipe or channel system that shows the shape of the conduit. This can be prismatic, with a fixed shape such as a trapezoid, or irregular, with a complex shape and/or sections with different slopes. With ...