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  1. M

    How I Passed the Thermal / Fluid PE exam

    Nearly ever conversion possible...    HIGHLY recommend you have this for the exam.  I had to use mine several times for my exam.  Worth every cent of the $40 I paid for the book.  I will be keeping mine for reference.
  2. M

    Rooftop Unit

    Total height should be Curb + Unit ...   Depends on the type of unit as the Air Inlet hood  is sometimes even higher.  Assuming your screen is to conceal all equipment?
  3. M

    Pressure drop in a pipe, wildly different results

    Try using SMath or Mathcad for your calculations.  You will be able to see the mathematical equations. 
  4. M

    Steam problems

    So the valve is oversized?  Why not just change it?
  5. M

    Steam problems

    Doesn't sound like an equipment problem to me.  Sounds like a control problem.  If the coil can supply enough heat 30F and below the coil is sized large enough and the fan should have enough pressure to draw the air througas well.  I would like to see the control programming....
  6. M

    Steam problems

    Was there a visual confirmation that the face dampers were open the bypass dampers closed?
  7. M

    Starting a Consulting LLC

    I also have to get comfy with Quickbooks...
  8. M

    Starting a Consulting LLC

    I contacted a lawyer I personally know and knew they had prior experiences in setting up an LLC.   Cost was like $650...   I then talked to other contractors I also knew and asked them what insurance companies they used.   I also contacted clients on what their insurance requirements were for...
  9. M

    Waiting period between FE & PE

    Pennsylvania requires 4 years after the issuance of the EIT certificate.    What state are you taking the exam?
  10. M

    Time Gap FE to PE

    Agree with Audi.  In PA, you must have 4 year experience after receiving the FE certificate to sit for the PE exam.
  11. M

    Things that are worse than failing the PE...

      Being alone in a room with Harvey Weinstein.   Being outside right now ...  (In the middle of a White Out and Temps are dropping to -1F tonight)   Having to shovel all that snow in the morning...
  12. M

    Button head sheet metal screws

    Or...  Something from here...  https://autobodyclipsdirect.com/product-category/plastic-nuts/
  13. M

    Button head sheet metal screws

    Allen with security head??
  14. M

    Mechanical Engineer but Offered a position in Cyber Security

    If they are offering the training and education for that position..  TAKE IT!!  As engineers we are sworn to protect the public, even in the  software/cyber security.
  15. M

    Pump curve problem

    I am gonna have to go over this again..   Apparently I have been doing this all wrong.
  16. M

    Pump curve problem

    I get 10.36" or 'A'...   Same reasoning as Audi.  
  17. M

    PPI Six minute HVAC - #30

    This is an Affinity Law Problem...  See Equations 18.46 in MERM
  18. M

    PPI Six minute HVAC - #30

    Frequency is in Hz..  Cycles per sec or revolutions per second.   Angular frequency is in radians per sec.  So angular frequency converts to 2*pi radians = 1 revolution.
  19. M

    Required codes to bring? (HVAC test)

    I took a 3 ring binder full of codes....  Didn't use it during my exam.
  20. M

    PPI Six minute HVAC - #30

    Is this must be a fluids problem..  and can you state or post them problem?
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