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  1. JC2021

    Lift Station Troubleshooting

    Bimr, yes that is essentially what I am referring to.
  2. JC2021

    Lift Station Troubleshooting

    MintJulep, the more I look into this the more I think you are correct. I got the final plans this morning and looked over them. We ended up specifying a simplex system. The holding tank is 2.5' diameter and 6' tall. I have 50-60 gallons of capacity between the pump and the inlet invert depending...
  3. JC2021

    Lift Station Troubleshooting

    Bimr, could you please elaborate on why this is too small? Is it a number of cycles thing? I have done quite a few lift stations this way and none of them seem to have problems. In perusing other threads, I found that you referenced a code that said to ensure a minimum wet well size of 1/4 the...
  4. JC2021

    Lift Station Troubleshooting

    I really appreciate the input. My mind has been churning on it for 48 hours now, and just having someone throw things out to think about has been helpful.
  5. JC2021

    Lift Station Troubleshooting

    Jhnblgr, They are single phase. 3 phase is not available at the location. You are correct there is no VFD. As far as the numbers, the way our state code is set up is they give you a total per day rate regardless of how long the facility is open and then make you use a safety factor of 4 to...
  6. JC2021

    Lift Station Troubleshooting

    I have a pre-packaged lift station that I specified a couple years ago that the owner is having problems with. The system serves a day care that has about 100 kids and 15 employees. It pumps into a gravity manhole about 300 feet away. Everything worked fine for the first year and then two months...
  7. JC2021

    Loading Dock PEMB Foundation design

    I am doing a foundation design for PEMB with a loading dock. Building is 150' by 65' with the truck dock in the 65' end wall. Frost protection is 3' below FFE and the loading dock bottom will be 4' below FFE. I assume this means that I need to extend my foundation wall in the area of the loading...
  8. JC2021

    Packaged Wastewater Treatment Recommendations

    Thanks for the input everyone. Both PCS and Aqua aerobics look like they will do the job, and both are closer to home than the one I originally found. I appreciate the point to make sure I ask for references and check up on maintenance. The RV park will be discharging into a county ditch. I have...
  9. JC2021

    Packaged Wastewater Treatment Recommendations

    I have two sites that I think could really benefit from a packaged wastewater treatment facility. Both are in Indiana. One will be a 12,000 GPD system for a school and the other will be a 25,000 GPD for an RV park. I was about halfway through the process with a company on one of them when my...
  10. JC2021

    Foundation Wall Question

    That's the direction I was leaning KootK. We're going to be about 3' deep for the frost layer. So I treat it like a 2'X3' continuous beam.
  11. JC2021

    Foundation Wall Question

    Hi all, I am designing a foundation for a 200' X 100' steel building. The client would like to essentially be able to dig a trench around the perimeter of the building and pour it full of reinforced concrete. The columns are 28' center to center with factored vertical loads of 60k and max...

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