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  1. #1
    Join Date
    Jul 2009
    Location
    South Carolina
    Posts
    2,094

    Online Manual J load calculator

    After about two years I finally got my online Manual J load calculator finished.
    Its been a fun project so far & I hope someone can get some use out of it besides myself. I also plan to add some data for Canada in the near future.
    I'd appreciate any ideas or feedback from anyone.
    The site is at: http://www.loadcalc.net
    Gary
    -----------
    http://www.oceanhvac.com
    An engineer designs what he would never work on.
    A technician works on what he would never design.

  2. #2
    Join Date
    Jun 2011
    Location
    Houston area
    Posts
    1,493
    Thanks Gary! May I offer some constructive criticism?
    The picture in my avatar is of the Houston Ship Channel and was taken from my backyard. I like to sit outside and slap mosquitos while watching countless supertankers, barges and cargo ships of every shape and size carry all sorts of deadly toxins to and fro. It's really beautiful at times.....just don't eat the three eyed fish....

    ¯`·.¸¸ .·´¯`· .¸>÷÷(((°>

    `·.¸¸..· ´¯`·.¸ ¸.·´¯` ·.¸>÷÷(((°>

    .·´¯`· .¸>÷÷(((°>

    LMAOSHMSFOAIDMT

  3. #3
    Join Date
    Apr 2010
    Location
    Red Deer, Alberta
    Posts
    649
    Quote Originally Posted by garyed View Post
    After about two years I finally got my online Manual J load calculator finished.
    Its been a fun project so far & I hope someone can get some use out of it besides myself. I also plan to add some data for Canada in the near future.
    I'd appreciate any ideas or feedback from anyone.
    The site is at: http://www.loadcalc.net
    Hi Gary...
    I tried to enter my house specs and could not find anything even approaching it... I'd suggest increasing roof R values up to about R70 or so (and above), and at least R50 (and/or above) for walls. Otherwise, looks like you are doing something good, give yourself a raise!

  4. #4
    Join Date
    Jul 2009
    Location
    South Carolina
    Posts
    2,094
    Quote Originally Posted by Cooked View Post
    Thanks Gary! May I offer some constructive criticism?
    Definitely, I would appreciate hearing it.
    Gary
    -----------
    http://www.oceanhvac.com
    An engineer designs what he would never work on.
    A technician works on what he would never design.

  5. #5
    Join Date
    Dec 2003
    Location
    Citrus County, Florida
    Posts
    1,233
    drop down menus for constructions are cut off. Using this calculator, one would need to use manual J book to look up construction numbers, right?

    nice job, I'm sure you have a lot of time in this project.
    Doug

  6. #6
    Join Date
    Jul 2009
    Location
    South Carolina
    Posts
    2,094
    Quote Originally Posted by enb54 View Post
    Hi Gary...
    I tried to enter my house specs and could not find anything even approaching it... I'd suggest increasing roof R values up to about R70 or so (and above), and at least R50 (and/or above) for walls. Otherwise, looks like you are doing something good, give yourself a raise!
    Thanks, I'll try to find some higher R-values to add.
    Gary
    -----------
    http://www.oceanhvac.com
    An engineer designs what he would never work on.
    A technician works on what he would never design.

  7. #7
    Join Date
    Jul 2009
    Location
    South Carolina
    Posts
    2,094
    Quote Originally Posted by Gunslinger View Post
    drop down menus for constructions are cut off. Using this calculator, one would need to use manual J book to look up construction numbers, right?

    nice job, I'm sure you have a lot of time in this project.
    Thanks for the input,
    No, you shouldn't need to use any manual J book.
    Can you tell me what browser & OS versions you're using.
    Not all browsers work the same, depending on the OS & version numbers there are sometimes features that can be left out or displayed different.
    Sometimes its easily fixable & sometimes not. I've already made some adjustments to accommodate some different browsers but its hard to test every one so I would appreciate your info.
    Gary
    -----------
    http://www.oceanhvac.com
    An engineer designs what he would never work on.
    A technician works on what he would never design.

  8. #8
    Join Date
    Dec 2003
    Location
    Citrus County, Florida
    Posts
    1,233
    you have mail. I am using windows IE
    Last edited by Gunslinger; 12-20-2011 at 02:51 PM. Reason: added info
    Doug

  9. #9
    Join Date
    Sep 2007
    Location
    Boise, ID
    Posts
    3,786
    Nice job. I might try comparing it against Trane Trace or Carrier HAP when I have some spare time.
    If a nation expects to be ignorant and free, in a state of civilization, it expects what will never be. (Thomas Jefferson 1816)


  10. #10
    Join Date
    Jul 2009
    Location
    South Carolina
    Posts
    2,094
    Quote Originally Posted by Gib's Son View Post
    Nice job. I might try comparing it against Trane Trace or Carrier HAP when I have some spare time.
    I'd be curious to see how they compare.
    The one thing I know I left some room for error is the duct load. I used a default spider duct system instead of allowing for the actual duct area. The problem with making things simple is it makes things less accurate also.
    Gary
    -----------
    http://www.oceanhvac.com
    An engineer designs what he would never work on.
    A technician works on what he would never design.

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