Joist Holes Sister Joist - Plumbing - DIY Home Improvement | DIYChatroom
Advertisement


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Plumbing


CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Display Modes
Old 11-08-2015, 05:48 PM   #1
Newbie
 
Join Date: Nov 2015
Posts: 14
Rewards Points: 16
Default

Joist Holes Sister Joist


I have improperly drilled holes in my joists. Would it be ok to sister a deeper joist with the hole drilled properly to the bad joist to correct the problem?

Advertisement

ragart is offline   Reply With Quote
Old 11-08-2015, 08:05 PM   #2
Member
 
Trucon01's Avatar
 
Join Date: Jan 2012
Location: Northern Virginia
Posts: 703
Rewards Points: 510
Default


Can you post a pic?

Advertisement

__________________
Basement Demo started Jan 2012: View my basement progression!!!

Bathroom demo started Feb 2013: View my bathroom progression!!!
Trucon01 is offline   Reply With Quote
Old 11-08-2015, 08:08 PM   #3
Newbie
 
Join Date: Nov 2015
Posts: 14
Rewards Points: 16
Default


Here it is.
Attached Thumbnails
Joist Holes Sister Joist-image_1447034880929.jpg  
ragart is offline   Reply With Quote
Old 11-08-2015, 08:13 PM   #4
Member
 
Trucon01's Avatar
 
Join Date: Jan 2012
Location: Northern Virginia
Posts: 703
Rewards Points: 510
Default


What size joist and what size hole did you cut?

Typically you don't cut any holes in the top or bottom 2 inches. And only a hole 1/3 the size of the joist.
__________________
Basement Demo started Jan 2012: View my basement progression!!!

Bathroom demo started Feb 2013: View my bathroom progression!!!
Trucon01 is offline   Reply With Quote
Old 11-08-2015, 08:17 PM   #5
Newbie
 
Join Date: Nov 2015
Posts: 14
Rewards Points: 16
Default


2x10 joist. 2.5 in holes. i didnt do it, plumber friend did. Looking for the way to get it right. Unfortunately the plumbing needs to be where it is. Was thinking of sistering a 2x12 with the hole in a safe place.
ragart is offline   Reply With Quote
Old 11-08-2015, 08:21 PM   #6
Member
 
Trucon01's Avatar
 
Join Date: Jan 2012
Location: Northern Virginia
Posts: 703
Rewards Points: 510
Default


You could sister both sides with 2x10s. Glue and screw. Or feel free to use bolts instead of screws. Better shear strength
__________________
Basement Demo started Jan 2012: View my basement progression!!!

Bathroom demo started Feb 2013: View my bathroom progression!!!
Trucon01 is offline   Reply With Quote
Old 11-08-2015, 08:28 PM   #7
Member
 
Trucon01's Avatar
 
Join Date: Jan 2012
Location: Northern Virginia
Posts: 703
Rewards Points: 510
Default


Can you also show the pvc fitting he used for this drain line? From far away it looks like a sanitary tee, which cannot be laid horizontally
__________________
Basement Demo started Jan 2012: View my basement progression!!!

Bathroom demo started Feb 2013: View my bathroom progression!!!

Last edited by Trucon01; 11-08-2015 at 08:31 PM.
Trucon01 is offline   Reply With Quote
Old 11-09-2015, 10:04 AM   #8
Newbie
 
Join Date: Nov 2015
Posts: 14
Rewards Points: 16
Default


Thanks. From memory I think it was a wye and not a tee, but I will double check that tonight.
ragart is offline   Reply With Quote
Old 11-09-2015, 05:21 PM   #9
Member
 
Join Date: Mar 2013
Location: Ohio
Posts: 4,420
Rewards Points: 1,384
Default


I see a rubber fernco hiding up there.
Ghostmaker is online now   Reply With Quote
Old 11-09-2015, 05:26 PM   #10
Newbie
 
Join Date: Nov 2015
Posts: 14
Rewards Points: 16
Default


Yes. There is no water flow through that, it connects to the vent stack. Is that improper?
ragart is offline   Reply With Quote
Old 11-09-2015, 05:27 PM   #11
Newbie
 
Join Date: Nov 2015
Posts: 14
Rewards Points: 16
Default


Also it is a tee fitting, but I'm told through another plumber that that is ok as the line is not horizontal, but sloping.
ragart is offline   Reply With Quote
Old 11-09-2015, 05:29 PM   #12
Member
 
Join Date: Oct 2011
Location: PA
Posts: 5,918
Rewards Points: 582
Default


yep see a fernco and looks like he used a tee ???
ben's plumbing is offline   Reply With Quote
Old 11-09-2015, 05:33 PM   #13
Newbie
 
Join Date: Nov 2015
Posts: 14
Rewards Points: 16
Default


Only air is flowing through the fernco and the sanitary tee is connecting two sloping pipes. Is that still improper?
ragart is offline   Reply With Quote
Old 11-09-2015, 07:05 PM   #14
Member
 
Join Date: Oct 2008
Location: Ontario
Posts: 1,700
Rewards Points: 2,316
Default


Kinda hard to see from the photo, but are those joists supported 3 feet to the right and 3 feet to the left of the PVC pipe ? If those joists are only 6' between supports, I would not worry about it.
SPS-1 is offline   Reply With Quote
Old 11-09-2015, 08:10 PM   #15
Member
 
Join Date: Mar 2013
Location: Ohio
Posts: 4,420
Rewards Points: 1,384
Default


Yes! All rubber fernco's are not an approved fitting for any plumbing exception is outside sewer.

A sanitary tee in the horizontal or on it's back receiving drainage is an illegal use of fittings.

If what you say is true that through the fernco is only air. You also now have a dry flat vent that is illegal under IPC.

Advertisement

Ghostmaker is online now   Reply With Quote
Reply


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
Sistering to correct warped joist... fprawlings4 Building & Construction 2 03-12-2013 08:04 PM
Repair/replace sill plate and joist ends heybales Building & Construction 5 02-16-2013 10:33 PM
How to Sister I Joist datahoe Building & Construction 18 12-31-2012 06:53 AM
Cracks in joist clydesdale Building & Construction 4 01-04-2011 08:08 AM
sister a joist Jack Hass Carpentry 7 06-19-2007 05:39 PM




Top of Page | View New Posts

 

Search Engine Friendly URLs by vBSEO 3.6.1