How Can I Support Joist After I Cut It For Waste Pipe? - Building & Construction - DIY Chatroom Home Improvement Forum

Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Building & Construction


Thread Tools Display Modes
Old 03-16-2013, 02:16 PM   #1
Join Date: Mar 2013
Posts: 1
Rewards Points: 10

How can I support joist after I cut it for waste pipe?

I am trying to add a bathroom to my attic. The only spot to run the pipe is next to the chimney. I have looked at every possible location to run the pipe and the only options I have is this spot or go down the laundry chute. We still use the chute and if we used it to run a waste line through the bathroom in the attic would not be where we want it. Running the pipe next to the chimney will be pretty easy except for in the basement. Where the pipe comes down from is right on top of a joist.

Here is some pictures. I was going to try and do this

But I can't because the chimney is on the other side

What can I do? Thanks in advance


Ellington66 is offline   Reply With Quote
Old 03-17-2013, 04:54 AM   #2
DIY staff

Join Date: Sep 2009
Location: Kane county,Illinois
Posts: 25,728
Rewards Points: 2,174

Moved to building and construction------


New members: Adding your location to your profile helps in many ways.--M--
oh'mike is offline   Reply With Quote
Old 03-17-2013, 07:16 AM   #3
Join Date: Mar 2010
Posts: 2,318
Rewards Points: 1,164

No way would I cut that old joist for that pipe. I would try to offset around it or figure out something else. Looks like a real old place , got to be careful what you cut and what reason.
No Warranty Means- If it breaks in half you get to keep both halves.
COLDIRON is offline   Reply With Quote
Old 03-17-2013, 08:30 AM   #4
Join Date: Oct 2010
Posts: 2,041
Rewards Points: 3,356

I think you can follow the diagram you posted. Usually you need to double up on the joists to install the headers across, but the area around the chimney rarely supports any weight. Just make sure the full joist away from the chimney is above a dead space, or if you can, sister 2x6 or full width 3/4 plywood, spanning 8' center.
The gray electrical cable should be replaced. I think it is a kind of cloth jacketed romex, and my personal experience is that the insulation will crumble on you if you do any work on them.
carpdad is offline   Reply With Quote
Old 03-17-2013, 09:09 AM   #5
Join Date: Mar 2013
Posts: 38
Rewards Points: 25

Nope no cutting that! Time to use 22 degree or 45's to offset it. don't always have to be a strait line.
RTC_wa is offline   Reply With Quote
The Following User Says Thank You to RTC_wa For This Useful Post:
COLDIRON (03-17-2013)

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
A couple furnace gas pipe questions, and an entire plan to replace my gas valve richapple HVAC 13 12-05-2012 11:33 AM
2" pipe on above sink in wall rusted out in a spot bryanp22 Plumbing 9 02-23-2012 08:29 PM
replacing cast iron pipe davemarz Plumbing 1 05-20-2011 09:16 PM
Lead Drain Pipe Project Turbo98 Plumbing 33 01-30-2011 11:27 AM
attic joist support kimallen123 Building & Construction 3 05-04-2010 12:31 PM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1