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  1. bimr

    U-bend before pump suction inlet.

    It appears to be installed that way for 2 reasons: 1. To allow the drop pipe to be removed. 2. The drop pipe is not aligned with the centerline of the drop pipe. The piping allows the installation without elbows in the horizontal pipe. The arrangement probably would cause operational problems...
  2. bimr

    How to determine optimal DO and ORP sensor placement for a carousel-type oxidation ditch with fine bubble aeration

    In the carousel, dissolved oxygen (DO) sensors are typically located near the center dividing wall, close to the aerators, and ORP sensors are often placed downstream of the aeration zone, near the weir or in the anoxic zone. https://www.thewastewaterblog.com/single-post/2016/12/18/orp
  3. bimr

    Anchor Block Sizing Factor?

    As the others have stated, you will not need any thrust blocks along the pipeline. However, you will need some type of restraint at each end of the pipeline. https://www.plasticpipe.org/common/...s/Chapter 6 - Design of PE Piping Systems.pdf Refer to page 352...
  4. bimr

    Anchor Block Sizing Factor?

    https://www.plasticpipe.org/common/Uploaded%20files/1-PPI/Manuals-Design%20Guides/Handbook%20of%20PE%20Pipe/SECOND_EDITION_HANDBOOK_OF_PE_PIPE_2008/Chapter_6__-_Design_of_PE_Piping_Systems/Chapter%206%20-%20Design%20of%20PE%20Piping%20Systems.pdf Refer to page 352...
  5. bimr

    Typical practice the contractor to kill the existing water service after install a new water service for a residential house.

    Varies with the location. Some municipalities have high fees for water tapping: "Regular Domestic Service Tapping Fee: $1,640.00 per Population Equivalent (PE) in accordance with schedule below:" https://www.lcwsa.net/sites/default/files/2024-12/2025_limestone_water_rate_resolution-copy.pdf
  6. bimr

    Dismantling Joint and Magnetic Flowmeter Installation

    Dismantling joints are normally used where the pipeline is mounted in such a way that it can't be easily pulled apart but you need to get access to a particular piece of equipment. For example if you had a flange mounted flow meter in a long straight piece of pipework it can be very difficult to...
  7. bimr

    Typical practice the contractor to kill the existing water service after install a new water service for a residential house.

    Depends on the project. I have some lead service replacements underway. The contractor is attaching new tubing to the existing lead water piping. The contractor then pulls the new tubing through the underground route of the existing piping using the lead piping.
  8. bimr

    Cooling Tower Blow Down Water Pipe Material

    Is the piping pressurized, or gravity flow? Is the piping above ground or buried? Where is the blow down going?
  9. bimr

    stormwater pump station

    Sizing wet wells for stormwater involves determining the appropriate capacity to accommodate peak inflows and ensure efficient pumping operations. Key factors include inflow rates, pump cycle times, and the need to minimize frequent pump cycling and excessive retention times. Use the volume of...
  10. bimr

    Tying into gravity sewer with gravity sewer

    Maximum slope on 6-Inch pipe is generally 33%. If you have that degree of slope, the pipe needs to be anchored. In general, maximum mean velocities of 8 to 10 ft/sec at the design depth of flow will not damage the sewer. However, high velocities in small pipe sewers and corresponding low...
  11. bimr

    How to Air-Seal Oval Tube into Hole!

    https://www.roxtec.com/us/knowledge-library/sealing-solutions/upgrade-your-pipe-penetration-seals/?gad_source=1&gclid=Cj0KCQjwt8zABhDKARIsAHXuD7ZGalK1oaPVIgBBFpncnhRW3PCEEcaytYOoPb6Dm_VkgZTQGJBHIucaArjcEALw_wcB https://www.garlock.com/company/garlock-brands/link-seal?setContextLanguageCode=en
  12. bimr

    Pressure Limits of Ductile Iron Pipes

    Here are some design guidelines: https://pe.mcwane.com/upl/downloads/dipra/dip-on-supports-b8d87317.pdf
  13. bimr

    Design of a pre-filtration internallly fed drum filter

    Take a look at these: https://www.huber-se.com/case-studies/detail/the-huber-rotamat-family-proven-technology-for-large-projects/...
  14. bimr

    Need help in selection of EDI system

    Yes, it will work fine. EDI works as a polishing step. Electrodeionization (EDI) is a chemical-free, electrically-driven water treatment technology used as a polishing step to remove ionized and ionizable species from water, often after reverse osmosis (RO), to produce ultrapure water.
  15. bimr

    Need help in selection of EDI system

    The system that you are buying is so small that it can be purchased off the shelf: https://www.dplvalves.com/edi-electrodeionization-water-treatment-systems-3053840.html
  16. bimr

    Air valve on falling main

    Darcy-Weisbach equation
  17. bimr

    Air valve on falling main

    If you have the air valve, you run the risk of a sewage spill at the air valve. Sewage tends to foul air release valves. There is not much value in having the air valve. Your pipe is only 150 mm, so the risk of pipe collapse is very small. The possibility of siphonage is low since there is no...
  18. bimr

    Maximum friction losses are 5% in pipes. Who said it first?

    There isn't a universally mandated rule of thumb "5%" rule for maximum friction loss Reasonable water pipe velocities depend on the application. There is no correct velocity for all applications. Here is a general guideline. Reasonable Velocities for the Flow of Water through Pipe: Boiler...
  19. bimr

    Need help in design of purified water generation system

    Asisraja D, Your SOP provides the outline of what you require after the RO treatment. The SOP shows a recirculation loop with UV treatment and filters. What is not described is the piping system. For pharmaceutical water piping systems, prioritize materials like PVDF and heat-based joints to...
  20. bimr

    Water supply system steep vs flat curve

    Your pressure is relatively high. Consider adding some type of pressure relief so that you don't over-pressurize the piping.

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