Analysis Results: Connections

Use the Connections tab to review individual analysis of pipes and channels in your drainage system.

Object navigation and editing

• Use the Zoom to Object tool to locate the object and correct any drawing issues such as connections, location, object type, sizes and level.
• Use the Object Properties dialog boxes to update any parameter issues for the object.

Name

Displays the name of the object.

Status

Reports if the flow in the pipe is OK, Surcharged, at Flood risk or Flooded, based on the maximum water elevation in the upstream Junction/stormwater control.

• OK. The maximum water elevation is below the Pipe crown.
• Surcharged. The maximum water elevation is below the Cover elevation but is above the Pipe crown.
• Flood Risk. The maximum water elevation is above the pipe crown but is below the cover elevation by the flood risk margin depth.
• Flood. The maximum water elevation is above the Cover elevation.

Connections Type

Displays the connection type.

From

Displays the upstream object connection (Junction or Stormwater control).

To

Displays the downstream object connection (Junction or Stormwater control).

Upstream Cover Level

Displays the cover elevation at the upstream end of the connection.

Diameter/Height

Reference parameter when viewing status and flow depth.

US Invert

Reference parameter when viewing maximum US water elevation.

Max. US Water Level

Displays the maximum water elevation (above datum) reached in the upstream object for the selected or displayed rainfall event.

Max. Flow Depth

Displays the maximum water depth (above invert elevation) reached in the connection for the selected or displayed rainfall event.

Discharge Volume

Displays the total volume of water discharged through the connection.

Max. Velocity

Displays the maximum velocity through the object for the selected or displayed rainfall event.

Flow/Capacity

(Pipes and channels only.) Displays the ratio of the maximum inflow to the pipe capacity. The Pipe capacity is calculated using either the Manning's n or Colebrook-White equation and is based on pipe full conditions. If the ratio is less than 1 then the pipe can take all of the flow. If the ratio is above 1, the pipe capacity is being exceeded and surcharging or flooding may occur.

Max. Flow

Displays the maximum flow through the object for the selected or displayed rainfall event.