Rational Analysis

Qx Routing Disabled

Excess Flow - Hydraulics for the Rational Method During your Rational Analysis you may get a message that looks like this: WARNING HGL cannot reach grate, Qx routing disabled at this pit. 1-6 Grate level is 0.091 above lowest upstream grate level. Route from min grate level is: 6-1 1-3 Grate level is 0.327 above [...]

Excess Flow and Qx Routing

Excess Flow - Hydraulics for the Rational Method Excess flow (Qx) occurs when more water arrives at a node than the downstream link (pipe) can carry. Or to put it another way: the pipe taking water away from the node is too small. Excess Flow in your network must not be ignored. You MUST deal [...]