Glad to help.
PCSWMM is a tool for running hydrologic and hydraulic analysis on surface or piped drainage systems. It uses the EPA SWMM engine directly (vs. SSA that used a modified version of the SWMM engine). You can do most of this type of work using the free, open source EPA SWMM, PCSWMM just has a better GUI, makes data and results more accessible, and generally makes the design/analysis process much quicker and easier.
Notes:
- It is an analysis tool, not a design tool (like the Rational Method) that will give you sewer sizes. You use it by running multiple iterations of tweaking pipe diameters, etc. and observe the outcome in terms of flooding, pipe velocity, etc.
- No cost analysis or optimization of sewer size, depth, installation method and cost.
- Not a detailed design tool that will give you a finished drawing of a sewer profile.
- Not a detailing tool (e.g. that uses assemblies of precast concrete or other materials to generate manhole or catch basin buildups like C3D, culvert headwalls or riprap, etc.).
Cost is $1600 CDN/seat (annual subscription). We have a number of folks who use it across many offices so have a network license ($4,400 base + $600 user CDN per year).
We use home-brewed tools to cost sewer systems, buildup manhole and catch basin assemblies using parts relevant to the jurisdiction, determine what diameter of manhole bases are required to suit the sizes of incoming sewers, etc. We also do large and small subdivisions, new municipal sewer systems, and municipal combined sewer relief / sewer retrofit projects.