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  1. wesley_pipes

    NCEES Agricultural PE Exam

    Anybody here taken the NCEES ag engineering exam? What were your thoughts? What study materials would you recommend? Ideally, I'd like to get a hold of older NCEES practice exams. I plan to buy the current one on the website. Thanks
  2. wesley_pipes

    Grading Tolerances

    I've designed some irrigation ditches for a large farm project. The specified slopes range from 0.03% to 0.07% - very flat. The contractor has told me that even with GPS and lasers, that he won't be able to meet these grades. From other designs and guidelines I've seen, slopes this flat are...
  3. wesley_pipes

    Calculating capacity in ditch section with uphill slope

    I am trying to analyze the capacity of an old ditch with some sections that have uphill slope (uphill = negative slope). Without using any modeling software like HEC-RAS, what are some ways I can estimate how much capacity we are losing in these sections? Assuming I have all the...
  4. wesley_pipes

    Valves for Plastic Irrigation Pipe (P.I.P.)

    Hello all, I am specifying 15-inch plastic irrigation pipe (P.I.P.) for an agricultural irrigation project. Contractor is telling me that 15-inch butterfly valves don't exist(according to his vendors). I understand 15-inch is a bit of an odd size, but I find it surprising that a major PVC pipe...

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