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  • Users: jartgo
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  1. jartgo

    Pump Control Valve, Hydraulically Actuated using System Pressure

    I initially posted a question in the water treatment forum but it probably should be in the pump forum. I didn’t see how to move the post, posting link here. Thanks in advance. Link
  2. jartgo

    Hydraulic Valve Actuator using System Pressure

    Can anyone point me to a general schematic of how this functions? I don’t necessarily need the actuators inner workings. I’m more interested in the connections to the system header. My specific situation is the application of a Pump control valve on a high service Pump. Thus I have...
  3. jartgo

    Wonderware VS. Inductive Automation

    Hello, I'm looking for any third party comparisons (white papers, etc.) that might have been done for comparing Wonderware's System Platform to Inductive Automation's Ignition. The use case will be for large water and wastewater plant monitoring & control. Any guidance would be appreciated.
  4. jartgo

    Cantex Style Lift Stations

    Looking for any published information on Cantex style lift stations. Pros (if any) cons (there are a plenty), history, use, etc. Thanks!
  5. jartgo

    Constructing Pump Stations now for Future Use

    I am designing a wastewater conveyance system with a future service area. The proposed system consists of several miles of force main and three pump stations, with zero flow today. Design ADF is about 300,000 GPD, with the largest pump station in the range of 500 GPM. Obviously the system...
  6. jartgo

    Peaking Factors as a function of design capacity

    Hello All, The Maryland Department of Environment (MDE) specifies peaking factors as a function of design capacities: Specifically, Hourly PF = (3.2 * Design Capacity ^ (5/6))/Design Capacity I can't seem to locate a source or explanation for this (beyond the MDE manual). That is, typically I...
  7. jartgo

    Water Model Rules of Thumb?

    We're having a small debate in our office about how much field work should be done in developing and calibrating a water model. That is, once the system is sufficiently mapped, what percentage of hydrants should be flowed in order to establish flow conditions. Or perhaps you look for a certain...
  8. jartgo

    Suggestions for archiving scanned files

    Good Afternoon, My firm is going through a process to scan and toss paper files. I know there is plenty of debate surrounding this topic, however, I'd really like to focus on the question at hand versus the debate of whether or not this is a prudent practice. We have a lot of drawings that...
  9. jartgo

    Method for Cataloging Scan Archive

    Good Afternoon, My firm is going through a process to scan and toss paper files. I know there is plenty of debate surrounding this topic, however, I'd really like to focus on the question at hand versus the debate of whether or not this is a prudent practice. We have a lot of drawings that...
  10. jartgo

    Check Valve Causing Water Hammer

    Hope everyone is having a great new year. I have a small project I'm working on bringing on line and I'd like to get your opinions about how I might address an issue that is more aesthetic than physical I think, but nevertheless, I'd like to see if I can improve upon it. I have a submersible...
  11. jartgo

    Gas Chlorination Booster Pump Selection

    I'm working on a booster pump for a gas chlorine system. The client is determined to include gas chlorine in lieu of hypochlorite, so that issue is settled. I'm having some reservation with settling on a booster pump for the ejector. The ejector to be provided by the supplier is a REGAL 13A...
  12. jartgo

    Water Meter Bypass Requirement

    Do you all know if there is a general or standard requirement for a bypass line on a domestic water meter of certain size or larger. That is, I see a lot of standard municipal details that require a bypass with locking valve on meter sizes of 1.5 inch and larger. However, I can't seem to...
  13. jartgo

    Digital Signatures With Acrobat

    I am interested in pursuing digital signatures on design documents with Adobe Acrobat. I have the professional version of Adobe Acrobat on both Windows and Mac computer. I have also purchased a Verisign certificate to facilitate streamlined authentication. I can't seem to get the two tied...
  14. jartgo

    Human Resource Planning Spreadsheets

    I'm looking for a spreadsheet or inexpensive software that I can use to schedule projects and tasks from a human resource standpoint. For example, I have task A that will take 20 hours, I want Jim to work on it for 4 hours a week until complete, starting Monday. Task B will take 160 hours and...
  15. jartgo

    Can EPANET be used to develop a unidirectional flushing program

    Or is this best carried out using the logic of a human? Any white papers on the subject?
  16. jartgo

    Need to interpolate large pump flow record data set

    Greetings, I consider myself an expert user of basic spreadsheet functions. I'm familiar enough with macros to give them a try, and not at all familiar with VBA but also willing to try it if necessary to solve this problem. The problem is quite simple. I have a dataset of sporadic daily flow...
  17. jartgo

    General Fee Percentage for Landscape Architecture

    My firm is in discussions with the possibility of bringing in a landscape architect and offer those services, mostly to public clients. Can you all give a general percentage base for determining fees of that nature? Of course every project is different, but for civil engineering for a public...
  18. jartgo

    Vertical Bends in Sewer Force Main

    I have an existing (in-place) pipe that must be used as a casing for a new force main. The existing pipe is 20 feet below the roadway. The current plans show two vertical bends after coming out of the casing in order to get the force main back up to workable grade, where the pipe laying would...
  19. jartgo

    Chemical Injection Quills

    I'm looking for operational experience on the best chemical injection quills. Obviously a subjective question, but I'm hoping you all might suggest the most appropriate product. I'm working at a small water treatment facility that injects the following: 1) Caustic 2) Phosphate 3) Flouride 4)...
  20. jartgo

    100HP with 230VAC

    I recently was looking at a project where I was being asked to replace a 100HP motor. Certainly one would assume that the motor is powered by 460VAC...not so, it's 230. There are three transformers hanging on the pole. I can't explain why the original project didn't include 480 transformers...

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