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Recent content by LHA

  1. LHA

    Weatherford Acquires ClearWell Technology

    Once we get past the in-depth discussions of Faraday's Law and sub-particle alignment and lots of other things that don't really matter, we can start offering examples of satisfied customers. Until then... I do have a gadget on my 2" PVC Domestic service, and it claims to be some magical...
  2. LHA

    Weatherford Acquires ClearWell Technology

    Let's forget ferrite rings for a moment (is that a circle of weasles?) I do have a gadget on my 2" PVC Domestic service, and it claims to be some magical electromagnet, and it cost a lot, and it doesn't appear to be doing anything. Please, fellow 'Tipsters, don't buy an magical electromagnet...
  3. LHA

    Weatherford Acquires ClearWell Technology

    H2O: Why do some members seem mad at Weatherford about this, or skeptical of their findings? LHA: I've never heard of Weatherford; still haven't in any other context, except for this Forum. Ergo, I have never tried to do business with, or get a job, from Weatherford. I have nothing against...
  4. LHA

    Tt for Open Channel

    It would be valid, I think to use actual flow. Over a long enough channel, it would make a difference. Given a trap. grass swale of b=2, D=1, z=3 and slope =.020, capacity is 11.8 cfs. Full flow yields a Manning's of .063 and v = 2.37. Same swale with 1 cfs yields a Manning's of .134 and v =...
  5. LHA

    .dxf to .shp

    I think you're talking apples and oranges. .dxf is an actual graphic files (Drawing Exchange Format). It can put graphics directly into .dwg. .shp is a shapes definition file. It talks to ACAD to tell it how to make shapes. I could be missing something, though. Post to Forums > Engineering...
  6. LHA

    Questions regarding pipeline pressure drop simulations

    If you are saying that using 0.008 m yields the correct delta p, it could be that the actual pipes are fouled, pitted, have poorly matched/welded/etc joints and fittings. Or it could be that you missed some major "Minor" losses in your model. Any baffles, reducers, manifolds, etc? Signature...
  7. LHA

    Conflict of Interest

    JAE: Other "inspections" that are required by the owner, architect, or engineer, simply to hold the contractor accountable to the contract documents can (and is often) performed by the engineer. LHA: True, but that person is not called a "Third Party Inspector", as the OP asked about...
  8. LHA

    Stamp Removal

    IAAWVU05: Do not worry, Eng A is hosed big-time, you are totally clear. An EIT is supposed to do legwork, including calculations. An EIT is, by definition "In Training". Signature under construction, sorry about the mess - Steve
  9. LHA

    Weatherford Acquires ClearWell Technology

    I own one of these silly things, in my home. I paid $300+ for it, six years ago, and have run it continuously. I have never noticed one bit of less scaling. Conveniently, on page 9000 or so of the O&M, it says something to the effect that running standard hardness test will NOT prove...
  10. LHA

    Use of Manning equation when a pipe runs full

    0.024 is the Manning's used mainly for Annularly-wound CMP. They don't make small diameter (your 21") pipe Annularly anymore, but I think they used to. .016-.018 is more typical for design/analysis of Helically-wound CMP. Manufactures claim as low as 0.012, but I wouldn't use that. You can...
  11. LHA

    Stamp Removal

    I'm in the same boat as kchayfie. I don't work in field where copywrites or patents come into play, but my contract definitely says my firm owns everything I design while there. Same deal at the firm before that, and the three before that one. Signature under construction, sorry about the...
  12. LHA

    Conflict of Interest

    In PA, USA, "Third Party Inspector" is a legal term. It is a private entity legally contracted to a Municipal (or County) government to do inspections for any number of reasons. I do them for Performance Security Bonding reductions, for sitework, others do them to ensure conformance to UBC...
  13. LHA

    Stamp Removal

    Firm B owns the design. They can not change what Eng A did, but they can keep using past plans previously stamped. Eng A took responsible charge - or as PA, USA calls it "direct control" - when he/she sealed the EITs' work. I do it all the time. Signature under construction, sorry about the...
  14. LHA

    WaterCAD help

    http://www.haestad.com/hmicom/listserv/ Signature under construction, sorry about the mess - Steve
  15. LHA

    Laser Tape Measure

    Rangefinders, yes, thanks btrueblood. That was getting like one of those "Oh, man, what was that guy's name" deals. I laid awake for hours...OK, not hours...OK, I didn't lay awake, but it bugged me. Signature under construction, sorry about the mess - Steve
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