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Recent content by HiDrPo

  1. HiDrPo

    Need some advice for competency development and transition to Design Engineer role

    Best way is jump in with both feet. Sounds like you've taken the right steps. Focus on doing less right than almost getting more done. To error is human, to forgive is not company policy. The guy who does two jobs perfect becomes the golden boy. The guy who gets four out of five jobs done...
  2. HiDrPo

    engineering salaries

    Guys - What are you trying to do? Chase away talent? Absolutely nothing wrong with pursuing a fat paycheck, especially with the spiraling cost of education. How many engineers would show up if a paycheck wasn't there? In general engineers are always in demand, but years are needed to become a...
  3. HiDrPo

    Fire protection and safety engineering technology degree from Oklahoma State University

    In consulting engineering companies plumbing and fire protection is a design function, not an engineering discipline. Engineering permit documents delegate fire protection system engineering to contractors. You can do plumbing and fire protection with a mechanical engineering degree, but you...
  4. HiDrPo

    Advices of trainings or course

    That's a tough one because professional development courses are designed to generate the biggest class size, not develop professions and you are in a narrow specialty. I suggest you convince them to pay for grad school and plan a path to a professional engineering license. Look to build skills...
  5. HiDrPo

    Conflict of Interest/Non-disclosure

    Your current employer's rhetoric is for their purpose in keeping you put and may not be legal. Don't over value your job since as soon as they lose the contract, you are gone. As far as insider information, it's an municipal service that is an extension of government and the information you...
  6. HiDrPo

    welding and metullurgist

    Don't let your student performance hinder yourself. I fell on the finish line and since repeatedly told I was the best engineer they met. I've also met a 3.8 GPA grad that couldn't figure out the pre-sets on his car radio. A project manager recently shook her head while remarking "grades...
  7. HiDrPo

    How many times should an Engineer change industry in his Career?

    Changing careers is not the same as shifting your concentration. My first job out of school was a mistake. It was a stagnant manufacturer with older engineers very set in their ways under an oppressive boss. The "established" twenty plus year veterans were not sharing knowledge. Truth be...
  8. HiDrPo

    Effects of change of R-22 to R-410A

    Is this a window unit? Is the breaker tripping? 15 or 20 Amp? What's the unit draw? The tech doesn't sound like an expert, but the problem may not be with the AC unit. If it is the AC, get the company owner in front of it and don't let him send the same tech.
  9. HiDrPo

    Parallel Fan powered VAV box with primary heating

    The rooftop gas heat maintains discharge at around 55 deg f or less. The VAV box primary damper modulates from minimum to maximum to maintain cooling set point. When heat is required, the damper modulates to minimum, the fan initiates and uses plenum air to achieve heating set point. If not...
  10. HiDrPo

    Space cfm calculation in a residential house

    Hap is one of the original load programs and can be used for residential calculations if you know how to do residential loads. Look up "Manual J" for info specific to residential. To answer your question, outdoor air ducted to the furnace mixes before entering and the resulting mixed volume...
  11. HiDrPo

    Hydronic calculations in a system that has a closed supply loop and a closed return loop

    I like your mark-up and you're on the right track. If branch "one" of your supply/return has higher pressure loss, "make" it shorter and branch "two" longer until you get near equal, add reasonable safety factor and size the pump. Watch that one of the take-offs doesn't have a disproportionate...
  12. HiDrPo

    Acoustic insulation in supply & Return Duct up to 3 Mtrs

    Both Vibro Acoustics and IAC publish sound analysis software that applied correctly will answer your question based on the noise generated by your unit. Trane has/had a good program for purchase. Many local representatives will apply the programs to generate attenuation selections for lazy...
  13. HiDrPo

    Lowering Heat Exchanger Supply Temperature

    ByonYrAur is on target. I was working with a YMCA with reheat coils considering condensing boilers. Unlike my experience, they used one row coils. At the lower temp, the job could not be done. Had they selected two row as a minimum, it would have worked. Early in my experience I missed a...
  14. HiDrPo

    Polyurethane vs FRP

    Who's on the hook if the poly doesn't work?
  15. HiDrPo

    Buoyancy tanks buried

    Assume the soil is water. The volume of the tank as equivalent water becomes the buoyant force. Subtract the weight of the empty tank. The difference defines the concrete slab needed to keep the tank under. Don't forget to add concrete to offset the buoyancy of the concrete, size the straps...
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