• Hydraulic Analysis on Agriculture Irrigation System

    I have a short agricultural irrigation system (a main) that provides water to farmers. The head of the system is a canal with a structure that provides a constant head of water elevation during the season. There is no pump to deliver water to the customers…
  • CivilStorm analysis error.

    I get a hashtag '#' as the user notification on CivilStorm when I am trying to run a model. Validation doesn't give any notifications or errors though.
  • Modelling from River Intake to WTP

    HI everyone, I have a question today regarding my modelling. A little background on my current work, there are 2 rivers that are acting as intakes to a water treatment plant (say river A and B) where it will flow by gravity without using pump going…
  • Maximum reverse flow in a pump

    Hello, I am using Bentley HAMMER to model a pump system that pumps water from a reservoir at low head to a reservoir at high head. The difference in head between the two reservoirs is approximately 600 ft. I am trying to study the transient effects…
  • evento transitorio spegnimento pompa velocità variabile

    buonasera, ho riscontrato due errori in questa simulazione: 1) problema cavitazione 2) analizzando i risultati dell'analisi ho notato che le portate (flow) delle tubazioni a valle della pompa spenta non tendono mai a 0 ho pensato: per risolvere…
  • SIG Virtual Workshop: OpenFlows - Flood Modeling for Critical Infrastructure with OpenFlows FLOOD

    Title: Flood Modeling for Critical Infrastructure with OpenFlows FLOOD Date: September 10, 2020 at 11:00 am EDT Presenters: Rodrigo Fernandes, Senior Consultant and Tom Walski, Bentley Fellow REGISTER NOW! This OpenFlows Special Interest Group…
  • 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…
  • SewerCAD Message Id 40008: Pump cannot deliver flow or head

    I've looked over a few forum posts, and most of them have to do with the system head losses exceeding the pump's shutoff head. That does not seem to be the case for this system. I've computed my model, and there are multiple user notifications that…
  • WaterCAD Steady State Analysis not working in my model

    I have a fairly simple piping system set up in WaterCAD but Steady State Analysis will not work. The message I receive is Message ID 41110: "Cannot solve network hydraulic equations," Source: Pressure Engine. I've gone through the troubleshooting procedure…
  • "Base" "Cannot solve network hydraulic equations." HAMMER

    Hi I have a question... I'm simulating a line of driving with a pumping system and then occurs by gravity to reach a storage tank therefore the there are sudden change in elevations therefore placed air ejector valves. but at the time of model does…
  • Pumps performance

    Good evening i have problem with the results of the network's pressure and flow when the pumps in the shutdown in the EPS mode the graphs of the junction's pressure shows unreasonable results so i need to know the correct way of modeling a water…
  • 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…
  • Designing Box Conduit with varying span and rise in sewergems

    Hi, While designing Box Conduit in sewergems, and putting constraints like: Crown matching and no drop structure allowed, we are facing the following issue: The span and in some case rise of upstream conduit is more than of downstream. For eg: I am…
  • Extended Period simulation

    While computing hydraulic calculations using WaterGEMS V8i, the results obtained at some certain time from different runs are not matched when using different Hydraulic Time Steps. In other words, I do the 24 hours EPS for a pumping system with controlled…
  • Aplication Hammer: in gravity flow pipe

    Hello, I need one example , to apply Hammer V8i (trasient analisys) in gravity flow pipe . I have one system only : -Reservoir -Joins -Valve PRV -Tanks My system does not include pump's or others components. Regards,
  • System Head Curve Using PPD

    I am having some complications in generating a system head curve that I am confident in. Let me explain the scenario. I have a model of a fairly small system (200 ish users) and had modeled the system using a PPD analysis since I don't have any reservoirs…
  • Problem with my demand?

    Hello there, I am an engineering tech student and am working on a project which involves creating a water distribution model for a small town in WaterCAD V8i and doing a basic pressure/flow analysis on it. I've created the model with the appropriate…
  • how to model a trench drain in CivilStorm?

    I am using CivilStorm and have the follow question, What is the most appropriate way to model a grated trench drain that is 50' long x 1' wide and with the bottom elevation sloped to the effluent pipe (sometimes at the endwall, sometimes in the middle…
  • Sewer Gems storm water underground storage tank

    I am trying to analyze the effects of development on the storm water collection system of a site. I have calculated everything (using SCS CN methods and runoff) for the before and after conditions. I now want to decide how large of an underground storage…