SewerGEMS can automatically size conduits, set node invert elevations. It also determines the size of inlets to pass a Sanitary/Storm design while meeting user-specified constraints in automated design.Ā It allows you to design many parts of the sewer network from a single pipe size to the entire system. Using SewerCAD/StormCAD engine using the GVF Rational solver in CivilStorm and using the GVF Rational or GVF Convex solver. Pipes and structures designed to consider several constraints such as allowable ranges of slope, velocity, and cover. The design algorithm attempts to minimize excavation, which is typically the most expensive part of installing sewer piping and structures. SewerGEMS can automatically design the inlet opening length for the inlet at any catch basin element in the network. You can modify the constraints for just an individual element. You just need to check- Specify Local Pipe (Inlet) Constraints box associated with that element. In order to use automated design, you must set all conduits to the correct shape and material, as well as set an initial conduit size. The automated design routine will select appropriate section sizes from the conduit catalog. If you want to ‘preserve’ certain conduits so that the design routine does not change