Surcharge State

There have several questions relating to surcharge state recently. The information below shows how the values are calculated.

The software calculates the surcharge state based on the following methodology.

<1 – Water is below the soffit at both ends of the pipe. State is set to the depth/height.

1 – Water is above the soffit at the upstream and/or the downstream end, and the flow is less than or equal to pipe full capacity.

2 – Water is above the soffit at the upstream and/or the downstream end, and the flow is greater than pipe full capacity.

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