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  • Users: Pmatherne
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  1. Pmatherne

    How to negotiate a salary

    I have 4 years of HVAC experience, 2 years Oil and Gas, and just got my PE I worked for only 2 engineering companies I just got an unofficial offer from a company for going back to HVAC work, which I do not mind. I just do not know what to ask as far as salary When I talked to the recruiter I...
  2. Pmatherne

    Pipeline Thermal Expansion

    When running aboveground pipeline (30" diameter, not insulated)what is the best way to account for thermal expansion? Basically I am trying to find a way to absorb the expansion on runs over 1,000 feet with only 2 bends (one 45 degree and one around 70 degrees). My first instinct was to use an...
  3. Pmatherne

    Sump Tank Sizing

    I have been tasked at work with the revamping of some old Lotus 1-2-3 spreadsheets The one I am working on is for sump tank sizing I understand what they are doing in the program, but I would like to find a good primer to help when I get stuck If I try to do searches I keep coming up with...
  4. Pmatherne

    What is in your toolbox

    Just curious, what is in everyone's reference binder? The binder that you always refer too the most. Right now mine is mainly piping specifications When I did MEP work I had a binder full of equipment sizing charts (VAV, diffusers, AHU's) and heat load calculation go-bys Future PE Engineer Pet...
  5. Pmatherne

    Connection types (FF, RF, RTJ, NPT)

    What do you use to determine what type of end connection you will use on a fitting. For instance when do you use ring joint instead of a raised face or flat face What about NPT connections? The reason I am asking is I have seen some use 600# RTJ and then use 600# RF later. My initial thoughts...
  6. Pmatherne

    Gas Line, Worst Case Discharge

    I am trying to do a worst case discharge on a pipeline that is primarily gas. there will be a little bit oil compared to the gas in the system. 135 MMSCF and only about 5500 BOPD The problem I am having is you have to take the volume of the pipeline, which is a 36" OD and over 360,000 feet long...
  7. Pmatherne

    Thermal PSV Sizing

    I am sizing a psv for thermal relief according to API-521. The problem I have is the vessel operates at 1 PSIG, but is rated for 125. With the operating temperature at 100 degrees, this gives the reliving temperature greater than the wall temperature. Which really skews the F factor. So I...
  8. Pmatherne

    NFPA 90A and Smoke Dampers

    I am laying out a school that has a lot of smoke rated partitions. I am trying to use Figure A.5.3 as a go-by to figure out where to place the smoke dampers for the return air path and I am coming up with a large amount of dampers. Does anyone know of a resource I can use to back check myself...
  9. Pmatherne

    Preparing for the PE

    I finally will have the required 4 years under my belt to take the PE exam. I have just started to study and my target is the October 2013 date. I plan on taking the HVAC Depth exam. Seems like only yesterday I decided to change careers and walked back into college at 33 years old One questions...
  10. Pmatherne

    Shop Drawings

    Well have not posted in here for a while, but I have my FE and almost 2 years experience now My job now is checking shop drawings and on thing that gets me stuck a lot are vavles. Is there a good place I can look up some information like Which metal is better ASTM B61 or B62 or B584 or B283 or...
  11. Pmatherne

    From FE to PE

    Well I finally got my EIT number, 6 months after I received the letter saying I passed Currently I work doing HVAC work under a PE. It is interesting, but not 100% sure what my niche will be. Unfortunately I am really good in CAD and I get mostly CAD work right now What I am wondering is, in...
  12. Pmatherne

    Getting the first job

    hi, I have been reading these forums on and off over the last 4 years while I got my degree in Mechanical Engineering. Hopefully I am not violating any of the posting rules by posting this Now that I am a graduate I am wondering is there anything I can do that will set myself apart from the rest...

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