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Manual J Heat loss for a 5 story Building

NJ, Designer
NJ, Designer Member Posts: 53
in THE MAIN WALL
 Manaul J and Manual N, say that these load calc methods will only work for buildings up to 3 story's, Can anyone explain the problem of using manual J for a 5 story building, Or have a way for me to do the load properly?

Thanks all

Comments

  • Don_197
    Don_197 Member Posts: 184
    Manual J or Block Load

    Block load (readily available on the net) will take care of your commercial needs....but really, if you do the manual j sheets correctly, the amount of floors is irrelevant. Check out some demos on youtube for manual j if you aren't sure about what you are doing with it.



    Don.
  • NJ, Designer
    NJ, Designer Member Posts: 53
    Stack effect calculations

    Manual J and N, from ACCA.org are only for buildings up to 3 story's, I KNOW manual J etc.... That's all I do all day and yes I did read the book cover to cover several times.

    For building over 3 story's the infiltration is different because of a stack effect so my question now is how do I calculate the infiltration loads on high rise buildings without becoming a P.E.

    If anyone can help...  Thank you.....
  • Spence
    Spence Member Posts: 316
    Over 3 Storeys

    Use ACCA commercial loads.

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