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Jonhnny123

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About Jonhnny123

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    Project Manager

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    PE
  • Calculator
    TI
  • Discipline
    Mechanical

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  1. I'm a mechanical engineer, if something is broken my first method of solution is to hit it with a hammer. If that doesn't work, get a bigger hammer But I would like to have a better understanding on how to read and understand wiring diagrams especially related to controls and relaying. Are there any good lessons or lectures online that you'd recommend? Kidding aside, I do understand the basic concepts of relays and controls, but I struggle with interpreting the normally closed / normally open contacts of a relay regardless of whether the relay itself is normally energized. Watching some one step through it or explain it a different way could be very beneficial for me. If what I said was complete gibberish, start me off of the dummies courses!
  2. 25. Be selfish and don't (fully) depend on anyone else. Nobody is going to have your interests in mind more than you. If there is an opportunity that you're interested in, you have to pursue it. If someone promised to do something for you, follow up with them. Don't assume that they'll just remember to do it. it may be importatnt to you, but to them it's just another task they have to remember.
  3. No kidding! By default, any rate increases due to grad school will be a far lower percentage of your salary considering you're easily making well over double the amount of money an average engineer your age makes. And from my experience, grad school is good to increase your general knowledge, but it doesn't really add monetary value in consulting (unless we're talking some rare or specialized field). The most important thing is having your license and possibly any relevant certifications in your field. I would think an MBA would be the most profitible as that could help you start your own firm or move up the management chain in a bigger company.
  4. Each person at my test center had a standard 6 ft folding table to themselves. There were no limits to how many references you could have open.
  5. I brought my copy of the ASME International Steam Tables. It's easier to manage than going through the MERM and there's less chance of needing to interpolate. I would have been OK without, but the convience was worth it for me.
  6. TI-89 TI-36X Solar I've had the TI-89 since high school. It's an excellent calculator! I didn't take my EIT until several years after college. Then I took the PE the year after. So I stopped using my TI-89 and just used to the 36X to become as familiar with it as possible. Unfortunately, I barely remember how to use the 89 now.
  7. I'm in MA and have never heard of anyone having to interview with the board. The application is a pain, but I had assumed it would be similar state to state. I guess I don't really see the benefit of having to renew two licenses continuously just to save a few hours on an application - unless you work in CT of course.
  8. What's your plan if you unexpectedly lose your job? You may apply to another job where they have to choose between you and another guy with similar experience. Wouldn't you want to still have that PE to get a leg up on him? I put a lot of time and effort into getting my FE and PE. I'm not going to let it lapse just to save a couple hundred a year.
  9. Here are my interpretations of the two terms: PTAC - A fully self contained unit. It has the entire refrigeration unit (evaporator, condenser, and compressor). They stick out of the wall so that the condenser can give off its heat to the outdoors. Most have electric heat, but I believe some come with gas heat. Room Air Conditioner - This seems to be a somewhat vauge term to me, but I'd guess it means that it's a split system. They'll have a fan blowing air over a cooling (evaporator) coil to provide A/C. But the condensing unit (condenser, compressor, and refrigerant piping) is located elsewhere. For apartment buildings the condensing unit is typically installed on the roof. For smaller building, they could be installed on the ground level. If it's a chilled water system, there will be a chiller somewhere outside that provides cold water to the cooling coil. For heat they could be electric, gas, or hot water depending on how the building was designed. PTACs are generally much less efficient. If you're in CA, I'm surprised the HVAC engineers were even able to specify PTACs. There are probably a lot of strict energy efficiency requirements in that state.
  10. Very true. In addition to being far more difficult, the afternoon session is immediately after a 4 hour session on a day that you're probably fairly stressed about to begin with! During the lunch break I took some advil and went for a walk for a few blocks (luckily it was a very nice day out). It helped get rid of my headache and prepare me for the beating.
  11. Honestly the two best things you can do are: 1. Pay attention to the units. 2. Understand what they're asking for.
  12. Excellent, thank you for the help. I think I may pick up "Design of Welded Structures" as that seems most likely what I'm looking for. I'm primarily trying to educate myself more on welding,
  13. Anyone have good suggestions on reference books for welding? This is not for the PE exam. I want something that can help me choose and size welds based on the application (for example what size fillet weld do I need between two plates that have x amount of stress).
  14. There are some cases where you just use a default value (like corridors or storage rooms) based on square footage. But when you're talking about a room with a known occupancy, you should be using: [ People x CFM/People + SF x CFM/SF ] to calculate the outside air requirement. ASHRAE 62.1 should have a fairly thorough list of occupant densities for various types of rooms. In practice, we'd use the exact occupancy if we had it. Otherwise, we'd use the densities.
  15. The MERM problems take FAR longer than the exam questions. There are some that can take close to an hour. The best representation of exam problems would be the NCEES practice exams. With that said, being able to work out the entire power cycle is useful. On the actual exam you'll be given a huge system but only asked to solve one small aspect of it.
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