• Hydrant and junction in a fire flow analisis

    Hello!! I´d like to know what´s the difference (in modeling therms) betwen hydrant and junction in a fire flow analisis. i´m using selections sets of junctions in a fire flow analisis but there´s any difference by using hydrants? in visual terms,…
  • Watergems: I am trying to add new pipes and junctions from dxf file. But junction elevations are not getting reflected after modelbuilder. I am mapping elevation to "elevation". Generally this method works. But it is not working when i am trying

    My surveyor gives me point elevations in dxf file, situated along centerline of pipeline. When I build my model in Watergems, i usually map "elevation" attribute in junction to elevation field in AutoCAD file. This ensures that i get accurate point elevations…
  • Import autocad to watergems

    Hello When I import the .dxf file to the WaterGEMS Software, the node in AutoCad is incorrectly recognized as polygon (and Entity column set Area) (first picture) and I cannot define it as a Junction(second picture). How can I fix the problem?Is there…
  • I have a very large WaterGEMS model and I am trying to make a selection set of junctions only present on pipelines above 4-inch. Is there a way to Query this in the model itself rather than doing post-processing of results in GIS?

    We have a lot of 1 and 2-inch pipes and I want to only extract minimum pressure results of junctions present on pipes above 4-inch dia. Any way to achieve this in WaterGEMS query builder? Thanks.
  • Using LoadBuilder to assign customer meters to nearest pipe

    I am trying to assign demands to junctions using the LoadBuilder tool, I am using internal data through uploaded customer meter data and I have made sure that the base demand for the customer meters is filled. but after I assign the customer meters to…
  • How to merge multiple orphan nodes with overlapping pipes?

    I imported a model using CAD file (dxf). There are 243 orphan nodes in the network - nodes that are just hovering above pipes. I tried select all and split, but it doesn't work. What could be going wrong? Another person asked this question on forum, but…
  • Small Pressurized Water Distribution System

    Hello, I’m trying to model a basic water distribution system for a small rural community. They currently have an existing pump and some water distribution pipes in place for just a few houses (30 or so) in the community. Our project is to extend this…
  • Hydrosanitary Desing

    Hello well, now I have to make an hydro sanitary design for a bus station. I have some toilets, sinks and urinals, etc with flowmeter in the zone of public bathroom especially. The problem is that, for this zone I need to work in a close network to guarantee…
  • EPANET emitter

    Hi, I'm currently modelling a theoretical skeleton pipe system in an urban setting which involves some leakages at the nodes. I know the leakage equation is very similar to the equation for the velocity of water through an orifice but it's different…
  • How to Model FCV

    hello all , Im modeling chilled water system ( closed loop) on watercad,I am studying the losses (from valves, fittings ..etc) through the hall system. *I need to control the flow from exceeding 14m3/h by placing FCV on incoming pipe of the cooling…
  • Customization of flex table Of Junction

    I have allotted Unit demand to junction. The no. of Units is Area in Ha. and the unit demand is 1.5lps/ha. Now i want to customized junction flex table. I want No. of units in junction flex table.
  • Doubt in Watergem node demand

    Hi Guys, I have a doubt in my water gem model. Currently, we are working in the industrial area project, So Each building has specific demand. I provided specific demand to the relative required nodes. My doubt their lot fo nodes has no demand required…
  • Peak factor and demand multiplier in WaterGEMS

    In WAterGEMS, I'm analyzing an existing water distribution system having 2 hours of water supply per day, i. e., it is case of intermittent water supply. I'm bit confused about peak factor and demand multiplier to be applied to the demand at a node and…
  • Fire Flow Analysis Downstream of a Pump

    Hey Everyone, I recently ran into the problem with WaterGEMS that nodes on the downstream side of a pump do not have accurate "flows available" for the fire flow analysis results. The pumps in the model are still operating as if there isn't a fire flow…
  • How to evaluate pressure and out-flowrate given layout and in-flowrate?

    Can WaterCAD be used to discover unknown parameters? Or is it just used to model known parameters? The Help documentation is not addressing some of the basics. Am I attempting to use it incorrectly? I do not want to enter pressures or flowrates. I want…
  • Assigning Demand based on Thiessen Polygon area.

    Dear Friends! I am using the Thiessen Polygon shape file created through WaterGEMS. I will work on that file (using GIS and Excel), to calculate the proportional demand for that particular node based on the area of Tpolygon. Now, the issue is, the…
  • Automatic creation of branch lines to orphaned nodes

    Hello, I have created my network using GIS data. In one area of the network there have been approx. 170 consumer nodes in the GIS data without any pipe connection. The distribution ring lines for that area I have found in an separate CAD file and imported…
  • WaterGems Analysis: Varying flow in pipeline

    I want to design water transmission main for upcoming development. We are proposing DI pipe of 500 mm dia. based on ultimate demand of 200l/s. However during initial phase of project, demand would be around 25l/s. For flow of 25 l/s and 200 l/s the pressure…
  • Re: Fire flow on existing system

    Matt, I can help answer the question that you are getting about negative pressure. It may be caused by a couple of things in your model. There is a good tech note on this particular subject that may apply in your case because you are modeling a connection…
  • Re: WaterCAD flow question

    Hi John: There are a couple of different ways to model this in your system, depending on how much information you have and the behaviour of your pumps. I'm going to assume you're doing extended period simuation modeling, since that's the only…