The calculated flow fields (highlighted in blue below) are based on values entered in the following fields: flow depths, diameters, slopes, and mannings (highlighted in yellow below).
These highlighted fields are described in the table below:
Field Name |
Description |
US Flow Depth DS Flow Depth |
The depth of the flow at the time of the isolation test (in inches). |
US Diameter DS Diameter |
The diameter of the pipe where the upstream/downstream manhole flow isolation test was performed. The program defaults to the diameter of the first pipe in the pipe list for the US diameter, and the last pipe in the pipe list for the DS diameter. |
US Slope % DS Slope % |
The slope of the pipe where the upstream/downstream manhole flow isolation test was performed. The program defaults to the slope from the first pipe in the pipe list for the US slope, and the last pipe in the pipe list for the DS slope. |
US Mannings DS Mannings |
The Mannings number of the pipe where the upstream/downstream manhole flow isolation test was performed. The program defaults to the Mannings number from the first pipe in the pipe list for the US Mannings, and the last pipe in the pipe list for the DS Mannings. |
US Calc Flow |
The flow calculated from the depth measurement using the Mannings equation in gallons per day. |
DS Calc Flow |
The downstream manhole calculated flow minus the upstream manhole calculated flow in gallons per day. |