• SewerGems Help: Pressure system to gravity channels

    Hi there, I am trying to model a system in SewerGems that has 4 pressure pipes coming into a single channel header. That header then gets split into two paths and fed by gravity through a mechanical screen and outfalls at the vortex tanks. I am not sure…
  • Inverted Siphon and Control Structure

    I have an inverted sewer and complex control structure that I would like to model in SewerCAD. The system is single 72" gravity pipe into a junction box. The normal flow out is through a 36" siphon. There are two side weirs, each at a different elevation…
  • Re: HOW MODEL COMBINATION AIR VALVES?

    If someone wants to model only the cascading flow downstream of an air-valve; that is, the transitional pressure to gravity type flow that might set up in a gravity trunk main or a sewer forcemain, they should take a look at the new WaterGEMS/WaterCAD…
  • SewerCAD HGL Profile Error

    I'm getting an odd hydraulic profile in a gravity sewer model where the HGL dips dramatically in the middle of a pipe (Pipe 31744). I've checked the pipe properties and the cannot determine what may cause this issue. The model was constructed from GIS…
  • Hammer - Setting gravity

    Hi I am modelling a scheme which has a gravity lower than the standard 9.81 due to elevation. Is there somewhere in Hammer to set this, as surely the available energy will change?