Results 1 to 6 of 6
  1. #1
    Join Date
    Mar 2008
    Posts
    8

    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. #2
    Join Date
    Feb 2008
    Location
    Western NC
    Posts
    2,504
    52 minumum.

    Theres no such thing as a rule of thumb.

    Call a professional. This is not a DIY site.
    I fully support the military and the War on Terrorism.


    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.

    If you do know, then do. But do it right. Otherwise, you may not be doing it long.

  3. #3
    Join Date
    Mar 2008
    Posts
    8
    52 minumum.

    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. #4
    Join Date
    Jan 2008
    Location
    MI
    Posts
    38
    6-6" on 12" x 8"
    8-6" on 14" x 8"

  5. #5
    Join Date
    Jul 2005
    Posts
    717
    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. #6
    Join Date
    Mar 2008
    Posts
    8
    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.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event