• WaterCAD for AutoCAD

    We are dealing with a problem while we use WaterCAD in AutoCAD. We are referencing a drawing in AutoCAD (using xref command) and when we try to draw an object we receive the following message: "Object reference not set to an instance of an object…
  • H2ONET to WaterCAD Conversion

    I have a few city water models running on an old H2ONET on AutoCAD R14 (!). We recently upgraded to WaterCAD V8i for AutoCAD Civil 3D 2010. I'm not having the best success converting the H2ONET files to something WaterCAD reads right away. There are a…
  • Darwin Calibrator Inactive Elements

    I'm fairly new to the software and have been going through the on demand courses. I have a decent understanding of how Darwin Calibrator works but I'm struggling with one thing. I have numerous inactive pipes in my model. Typically these are either…
  • WaterCAD age calculation fails

    I have run into a recent problem. I've been trying to do a age calculation on our water system and for some reason the largest duration I can calculate is 128 hrs. If I change it to 129 hrs the calculation fails and I get an error: Calculation Engine…
  • Average Demand Calculation and Fire Flow

    My model is fine and everything works fine however the design criteria for demand is 2.1 multiply by the average demand + Fire Flow (as indicated in the snapshot) I have setup the Scenarios and alternative for this criteria based on the BASED DEMAND…
  • Unusual Flow Results

    I'm getting some unusual results and am unable to find a solution. I'm trying to better calibrate our model near an area where 2 pressure zones meet. I've performed a fire flow analysis and tried to confirm the pressures and flow in that area. A flow…