The Connections Summary Results shows a summary of how each Connections in the current phase performed.
Filtering the Results
When the All Items radio button is selected, the summary shows the maximum flow rates entering and leaving together with details of the volumes for each of the Connections in the Phase for the current storm/event as highlighted on the Storm Selector on the Status Bar. The Select Filter drop down filters the results to show All Items or a selected Flow Paths.
When the All Storms radio button is selected, the summary shows the maximum flow rates in and out of the Connections selected in the Select Item drop down, together with details of the volumes for each of the storms run. This is of most interest when Rainfall with multiple storms is selected on the Analysis Criteria.
When pressed, the Critical Storm toggle button will display the critical storm in the following ways:
- When the All Items radio button is selected, the critical storm and its results for each Connection are displayed, rather than the selected storm.
- When the All Storms radio button is selected, the row containing the critical storm for the currently selected Connection is highlighted in orange. If two or more storms are critical only the first one will be highlighted.
The critical storm for a Connection is defined to be that storm that has the largest Max Outflow result.
Fields can be turned on or off using the Spreadsheet Preferences form that is accessed from the toolbar at the top of the form. The full set of columns available are shown and can be turned on or off using the check boxes. These settings will be remembered between sessions.
If the results of the analysis are showing issues for the current storm, or one of the storms if showing critical/all storms, a message will be shown at the top of the form. More information can be found in the Simulation Health section.
Connections Type - The connection type is shown for reference, full descriptions of each connection type can be found on the Connections page.
From - The US item (Junction or Stormwater Control) is shown for reference.
To - The DS item (Junction or Stormwater Control) is shown for reference.
Upstream Cover Level - The cover level at the US end of the connection.
Max US Water Level - The maximum water level (above datum) reached in the upstream item for the selected or displayed rainfall event. Note: if abstract connections (No Delay, Lagged Flow) are connected to a simple junction then this will be left blank).
Max Flow Depth - The maximum water depth (above invert level) reached in the connection for the selected or displayed rainfall event. Note: if abstract connections (No Delay, Lagged Flow) then this will be left blank).
Discharge Volume - The total volume of water discharged through the connection.
Max Velocity - The maximum velocity through the item for the selected or displayed rainfall event
Flow/Capacity - Only shown for Pipes or Channels. 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 is capable of taking all the flow. If the ratio is above 1, the pipe capacity is being exceeded and surcharging or flooding may occur.
Note: If a connection is flat, or has a negative fall, the capacity will be 0. In these instances the software uses a fixed velocity of 2.5 ft/s (0.75 m/s) for the capacity calculations.
Max Flow - The maximum flow through the item for the selected or displayed rainfall event.
The capacity exceeded button toggles the highlighting of any connections where the Flow/Capacity figure is > 1