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Old 01-06-2009, 12:39 PM   #1
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sistering in a plumber whacked joist


I spent more time in the crawl space yesterday to better view my bathroom ongoing project.

House is 20' wide and has continous 2 X 8 by 20 foot floor joists aprox 40-50 years old,,spaced at a weird spacing of 20" but has diagonal board subfloor so I guess that doesnt matter.

When it was built looks like the plumber cut a joist off completely( close to center support) to run cast stack thru THAT spot then went over on SAME joist to outside wall,,and whacked it off completely again to give him more room for tub plumbing.

In between THAT is a cold air run that runs crosswise under joists, probably 8" by 24 ".

I was going to put another 8" 10 foot joist under there BUT cant fiure out how to get it in there. Would be easier to get a double 2 X 6 in and turn it,,,block up both ends. HAS to come from other side completely and slide over center support AND cold air return.

My idea is it survived 50 years the way it was,,altho sagging a bit,,a double 2 X 6 has to be better than what it had now. The joist wasnt under the partion wall by a few inches anyway!!(this double up will be under the wall.) I am trying to level the floors(other settlement issues). But want to put ceramic tile on floor and walls

Will this be 'good enough'??? or a better way suggestings?? TIA-d-

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Old 01-06-2009, 01:50 PM   #2
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sistering in a plumber whacked joist


Can you take a pic of both ends, and at the cuts? Depending on the position of the plumber's joist cuts, you might have a few more options. But I need to see pics.

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Old 01-06-2009, 05:49 PM   #3
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sistering in a plumber whacked joist


I'm under the impression that it the duct work that prevents you from placing a new joist in there. Also, I'm given to think that you have a wall in place, mid span of the joist spacing! Duct work can be disassembled fairly easy! I would suggest that you would clear the duct work away and then install a double 2X10 under the wall. Then, install headers on the joist that had been cut, hanging the headers with joist hangers on the adjacent joists!
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Old 01-07-2009, 12:26 AM   #4
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sistering in a plumber whacked joist


Sorry not able to do pics.

Wildie,
not only the duct work but the fact I have about 9' to maybe 9'3" to get a 10 foot floor joist up there,,,which end goes up first?? or more like how can you twist one in there? I was going to TRY jacking the subfloor up mid span from the center support a bit to get space to slide new past center,up,then back over outside blocks to rim joist.(no sill plates here)

With a 2 x 6 I can slide over top from other side,,twist into place and block up!! I dont get the reference to the 10" joist midspan,,,that would hang down lower than present joists and interfer with duct to boot. Duct work is 'nailed' up to floor joists,tite!! AFTER I get a new plumbing stack pipe in there9caast coming out,pvc going back in,,,takes LESS space) I can probably block out to give pipe space and support other side also

I bit more history,,,when I jacked the 3" bow out of the center support(I poured new support pads) because old support sunk in the mud and dirt. ,,,the joists on either side of this one came up when the center beam came up,,,I didnt see this one joist didnt come till I get up on main floor and see (this is a double plumbing wall) two partian walls (non-load bearing)about 4" apart,,,between the utility room and bathroom,,,the utility partition came up,,,the bath partion did not.It was hidden behind the other side of center support. After I crawl clear over there now,,,I see why!!! Its 'hanging' from diagonal subflooring,,,cut off on both ends!!

Thanks for the post!!

Last edited by 4just1don; 01-07-2009 at 12:29 AM.
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Old 01-07-2009, 02:30 PM   #5
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sistering in a plumber whacked joist


My! My! Makes you wonder who the plumber was! If you could find out, I'd be marching him back there, at gun point if necessary, and make him fix it!
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Old 02-03-2009, 08:57 PM   #6
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sistering in a plumber whacked joist


I'm having a similar problem with a damaged joist. I would try to sister it, but the stack pipe is in the way. Here's a picture. At least one of these links should work..

<a href="http://picasaweb.google.com/lh/photo/2Lbb-A0KkhHWUXXew45kig?feat=embedwebsite"><img src="http://lh3.ggpht.com/_CLHSTuEIMns/SYkAVUwwYFI/AAAAAAAAAH4/tf1mNOBG6Ys/s800/100_2060.jpg" /></a>
http://picasaweb.google.com/lh/photo...eat=directlink

The floor? below the joists looks a bit damaged also. It looks like it's not even wood, but some kind of plasterboard - although it probably would have been placed there before drywall was common.
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sistering in a plumber whacked joist-100_2060.jpg  
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Old 02-04-2009, 02:45 AM   #7
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sistering in a plumber whacked joist


Quote:
Originally Posted by Wildie View Post
My! My! Makes you wonder who the plumber was! If you could find out, I'd be marching him back there, at gun point if necessary, and make him fix it!
Which plumber? It sounds like most of them. Cowboys with Sawzalls.
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Old 02-04-2009, 01:33 PM   #8
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sistering in a plumber whacked joist


a plumber from 50-60 years ago did it,,doubt he exists here on earth these days,,plus how would one trace that back?? Wouldnt matter,,, its still up to ME to fix it!!

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