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  1. 06-06-2008, 09:17 PM #1
    brhino14
    brhino14 is offline Regular Guest
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    Take offs on 14" trunk line

    What is the rule of thumb for how many take offs can you have on a 14" trunk line? Also, how about a 12" trunk line?

    Thank You
  2. 06-06-2008, 09:27 PM #2
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    iraqveteran
    iraqveteran is offline Professional Member
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    52 minumum.

    Theres no such thing as a rule of thumb.

    Call a professional. This is not a DIY site.
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    If you don't know, then don't do. If you don't know and still do, then be prepared to pay someone else a lot to undo what you did and then do it right.

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  3. 06-07-2008, 07:42 AM #3
    brhino14
    brhino14 is offline Regular Guest
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    Theres no such thing as a rule of thumb.

    Call a professional. This is not a DIY site.

    I did call a professional but I am seeing how many more 8" lines can be installed on this trunk line since the "professionals" sized one of my rooms to small. I have adequate velocity just not enough volume. I am calling them back out here to fix it but I wanted a second opinion. I do not want to starve the other lines with this change. How many 8" lines, 6" lines, etc can be installed on this 14" or 12" trunk line? That is the question.
  4. 06-07-2008, 07:58 AM #4
    gena
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    6-6" on 12" x 8"
    8-6" on 14" x 8"
  5. 06-07-2008, 10:47 AM #5
    deejoe
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    Brhino14. "stick" the rule of thumb, they don't work.

    note;
    a 14" diameter pipe has an area of approx 154 "
    a 12" diameter = 112"

    a 6 " diameter = 28"
    a 5" diameter = 20"
    You should be able to do the rest of this grade 5 math by way of "division"
  6. 06-07-2008, 12:13 PM #6
    brhino14
    brhino14 is offline Regular Guest
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    Brhino14. "stick" the rule of thumb, they don't work.

    note;
    a 14" diameter pipe has an area of approx 154 "
    a 12" diameter = 112"

    a 6 " diameter = 28"
    a 5" diameter = 20"
    You should be able to do the rest of this grade 5 math by way of "division"

    I thought it was that easy. I did not know if there was some "fudge factor" in the calculations. Thanks to all who have been helpful.
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