• Pump Set to Off But is Adding Energy to the System

    This is in WaterCAD CONNECT Edition. My question stems from an issue with a tank in my model keeps overflowing during EPS run (fills up, remains full, doesn't drain). I believe I have identified the hydraulic grade is being supplied by a certain pump…
  • Large Negative Pressure on model

    Hi, I am quite new to this software and am still in the learning process. I'd like to ask regarding a few uncertainties with my model which I believe are parts that I have missed out on. Firstly, I'd like to explain briefly on the background of the…
  • How can the WaterGEMS determine pipe diameter automatically based pressure and velocity constraint on optimization by Darwin designer but i'm not having costs of pipe?

    darwin designer is asking for cost of pipe.
  • Demand multiplier

    Hello everyone. Please can someone help me explain what a demand multiplier is? I want to use ESP but I'm stucked here. I really need to know what demand multiplier is. Thank you
  • Negative Flow in tank Top inlet fill

    I have an issue in the model, If you check the T-1 & T-3 inlet it was connected as a top inlet. When I run the simulation for avg daily demand I don't have any issue. However, when I check the properties of the tank the inlet pipe it shows negative flow…
  • No Flow in tank Top inlet fill

    Hi, I have another issue in the model, If you check the T-1 inlet it was connected as a top inlet. When I run the simulation for avg daily demand I don't have any issue. However, when I run the same model with Max daily demand scenario (Peak factor…
  • How to model discharge to atmosphere point

    HI, I'm working on my college project (The project is a plumbing system to drain a 1-m3 tank in the shortest time ). I use the discharge to atmosphere element at the end of the project but I'm really confused with this element's input data like [Flow…
  • SIG Virtual Workshop: Bentley Hydraulics & Hydrology − March 21, 2018 − You're Invited!

    Make plans to attend the next Bentley Hydraulics & Hydrology Special Interest Group (SIG) virtual workshop, Modeling Fire Hydrant Flow Events in Water Distribution Systems with WaterCAD/WaterGEMS . This session will start on Wednesday, March 21, 2018…
  • Re: documenting modelling process

    Platy, As a suggestion, the training manuals that are provided during the Haestad training courses are fairly robust and provide a large number of available parameter ranges, and good discussions on the expected results. I also found another good modeling…
  • model output showing areas with leaks?

    Hello, I am responding to an RFP for a water distribution system evaluation which includes water modeling and calls for (among other things) "outputs from the model should include ... areas with leaks". I am not aware of a way to use WaterCAD to…
  • Re: Fire flow on existing system

    Matt, Do you have the system completely modeled? meaning are you modeling all the way back to known boundary conditions (tanks, pumps, etc) or just a skeletal system of the model? With respect to the layount, just make sure you are modeling…
  • Water Distribution Modeling Software Survey

    Hello, If you have a few minutes please fill out this short survey to help the Bentley Institute Geospatial team create better training that is more suited to the workflow of our users. http://www.surveygizmo.com/s3/568508/Water-Distribution-Modeling…
  • WaterCad Select Series 2 Copy Graph Data Problem

    I am having problems with copying data from the graph data tab. My problem is that when I copy all the data the header row is not copied. So when I paste in excel I have no idea what the data in each column represents. This woudn't be a problem if WaterCad…
  • Re: modelling with 2 fire events

    Grgulla, Briefly, you mentioned it was a requirement to model 2 fire events - understood that it is a requirement - a bit conservative but I wanted to mention a few other points to consider when modeling 2 fires simultaneously- This will obviously drive…
  • Tank and end connections

    Hi, How to draw a pipe layout . The case is "a Pump pumps in water from a underground tank to a tank on a building". Now as in water cad we insert a tank on the building and connect it to a pump and inturn connects to the U/G tank. BUT we have to provide…
  • Re: Darwin Calibrator

    Didi, can you help out with some clarification on your question, are you working out a workshop and trying to get the results that are part of the workshop? or Calibrating using Darwin Calibrator for an actual system? If you are Calibrating for a real…
  • WaterCAD for Reclaimed Water

    Any suggestions on how to model a reclaimed water system that delivers water to multiple (bulk) storage ponds? Each pond has a level control and a pressure staining valve. Is there a way to simplify this model, I can't justify trying to model all the…
  • Changing Length (Scaled) in water cad v 8i

    Can we change the setting Length (Scaled) m to normal custom length m . (Where we can enter our own length values). U can see the picture to get clear Idea. Thank You
  • 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…
  • Initial conditions,KNOWN water level in the tank in every time step

    Regards to all. The existing water supply network belongs to III elevation zones of much larger water supply system and ends with the tank of III elevation zone. It is necessary to design new water supply network of IV elevation zone. In the…
  • 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…
  • Re: Tank Overflow

    Point to add about Tank Overflows...tanks in operation that overflow, do so quietly, silently and often without notice unless someone happens upon a flowing stream where there should be non or perhaps a mass balance of a system or the tank inflow/outflow…
  • WaterCad Select Series 2 Unidirectional Flushing - No Option for Pressure Constraint

    The newer version of WaterCAD Select Series 2 seems to have removed the option to specify a pressure constraint for flushing alternatives. I don't know when this was removed, but for me it would be very useful to specify a pressure constraint. The…
  • Water Distribution Modeling Software Survey

    Hello, If you have a few minutes please fill out this short survey to help the Bentley Institute Geospatial team create better training that is more suited to the workflow of our users. http://www.surveygizmo.com/s3/568508/Water-Distribution-Modeling…