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About mlparham

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  1. mlparham

    Another Big Job

    A two-year course? It takes eight years' minimum to become a PE. A four-year engineering degree from an accredited university, think big bucks, and four years of experience under the direct supervision of a PE. You also need references from three other PE's as well as a reference from your managing PE. You are then qualified to undertake 16 hours of examination. I respect what you do and I always consider the challenges that a tradesman encounters everyday. I seek the tradesman's advice when possible before issuing letters or designs. Professional Engineers are bound by law "to protect the health, safety and welfare of the public". If contractors would take the time to ask questions about the engineer's recommendations you would be surprised how willing most engineers are to address the contractor's concerns and make changes. Tip to tradesmen: Always read the notes on the sketch!!
  2. mlparham

    2008 building with a lot of buildup inside CPVC

    Is this a condo building?
  3. mlparham

    Garage walls with all drywall sheathing

    What is the exterior siding and age of the home?
  4. mlparham

    White Powder residual from a Gas furnace???

    I agree with Marc. The flame in the space heater does not look right. I would expect to see the flame covering the entire bottom of the heater. Check the installation directions and the trouble shooting section.
  5. mlparham

    Radiator Light

    One can and will.
  6. mlparham

    Roof Video

    If you want crawlspaces visit Atlanta. We have hundreds of thousands in the metro area. There are many 1900's era homes with pier and beam foundations, bricked up at the exterior piers in the 50's where a GoPro on your head will not fit. Maybe it could be strapped to your chin?
  7. mlparham

    "Ghosting" on hardi-type siding

    Moisture movement from the interior to the exterior. Any water related issues in the home?
  8. mlparham

    Kitchen floor tile missing underlayment

    Please do not try to repair any cracked tiles. It is very clear that you do not have the skills to replace tiles.
  9. mlparham

    500-Year Home

    500 years old? I find that hard to believe.
  10. My Sure Test analyzer will detect false grounds but my pocket tester will not. The Sure Test will also indicate a false ground if the receptacle within 15-20 feet of the panel.
  11. mlparham

    Powder Post Beetles?

    It may be a combination termites and beetles as well as ants at the bottom of the pier. What is the age of the home and was the infestation found in a basement or crawl space?
  12. mlparham

    Circulator Layout

    My bible for this stuff is "Modern Hydronic Heating" by Siegenthaler. When you have two closely spaced tees on the primary loop there is very little pressure difference between them. And that's what you want. If the tees are far apart then there's a pressure difference, and that pressure difference will induce flow between the points through the secondary loop. To minimize turbulence in the flow you want at least 8 pipe diameters of straight pipe in the primary loop before the first tee, and at least 4 pipe diameters of straight pipe after the second tee. In Kurt's picture it looks like the primary circulator is bigger than the secondary, so you won't get the short circuiting. But Siegenthaler says that if the closely spaced tees principle is done right the primary circulator doesn't need to be any bigger than the others -- just sized right. Ahhh. The intention seems to be minimizing the influence of primary pump force on the secondry loops so that secondary flow rate follows as much as possible only the secondary pump force. These are obviously very low pressure loops. Thanks. Marc I expect this post to be deleted but what is the the difference between primary and secondary thrust modes? Maybe a nap?
  13. mlparham

    IJ app??

    The reason is because you do not pay a fee to be a member of this forum. I would be happy to develop an app for you. The retainer to start work is $4,000. I will accept cash, check or credit card. How would you like to establish your account today?
  14. mlparham


    Perhaps try again in English this time. Try it again with a with a paragraph or two. Your post is, to be kind, difficult to read.