Place inlets, junctions, outfalls and pipe runs on the drawing, then run the Rational method, Manning capacity and the HGL backwater pass on what you drew. Drawing and analysis are free. Pro adds the deliverables: formatted HTML reports, automatic pipe sizing and multi-return-period tables.
Buy Pro — $29/year Install free pluginSeparate SKU from HydroComplete for Open CAD Studio. Keys are not interchangeable. Plugin source is GPL-3.0.
OCS Plugin Manager → marketplace → Storm Sewer → install → restart OCS. A Storm Sewer ribbon tab appears.
SS_INLET, SS_JUNCTION, SS_OUTFALL, SS_PIPE on the canvas, or SS_IMPORTXML from LandXML. Hydraulic data rides on the entities as XDATA and round-trips through DWG.
SS_ANALYZE, SS_REPORT and SS_PROFILE free. Pro: SS_ACTIVATE email hc_live_… then SS_REPORT_HTML, SS_SIZE, SS_MULTIRP.
SS_ANALYZE)SS_PROFILE)SS_REPORT)SS_VALIDATE)SS_REPORT_HTML)SS_SIZE)SS_MULTIRP)StormSewer is a separate, free, open-source desktop application from the same author, for Windows, macOS and Linux. It does everything this plugin's Pro tier does — formatted reports, automatic pipe sizing and multi-return-period tables — at no cost, and it writes a submittal PDF as well.
What Pro buys is not doing that work in a second program: your network stays on the Open CAD Studio drawing, as drawing entities, and the report comes out of the same session. If your drawing already lives in Open CAD Studio, that is worth $29 a year. If it does not, take the desktop app and pay nothing — that is a perfectly good answer and it is why the link above is here.
Keys are issued for product stormsewer only. Activate inside Open CAD Studio with SS_ACTIVATE your@email hc_live_ss_…. Valid one year from purchase.
Unlocks SS_REPORT_HTML, SS_SIZE and SS_MULTIRP. Key emailed after Stripe checkout.
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