Hi Folks, I had prior work done to my kitchen approx 10yrs ago. The contractor cut out part of one of the floor joists to support a half wall we have in dinning room. I am now selling my home and the home inspector flagged it. Adding a sister joist to support is recommended. I'll probably trim off 1/8" or 1/4" to get it in there as it's simply to tight, not enough room and leverage to pound it in place. My question is what kind of screws or nails should I use? and how long? Joist is a 2x8x12. I want to do it as proper as possible without going nuts so there are no questions on the repair. Thanks in advance!
Sister Joist
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Is this from the basement side I take it?
Post up a picture if you can.
Post up a picture if you can.
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You may still need a bottle jack to lift up the cut joist. 4 nails ever 16" staggered should be over kill.
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Be careful this doesn't degenerate into "well I fixed it", "how did you fix it," "i found the fix on the internet", "uh, we want you to get an engineer to bless your fix."
I say this because at least twice a week I'm in someone's basement investigating an improper repair. And when I find an improper repair, I specify what I feel is the correct repair.
I say this because at least twice a week I'm in someone's basement investigating an improper repair. And when I find an improper repair, I specify what I feel is the correct repair.
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Was that the contractors repair for cutting that joist? Wow is all I can say to that.
Glue and deck screws. Buy a cheap or rent a angle drill and predrill. 4 each row and every 12". Then put in a 1/2" bolt with washers, staggered every 16". If you copy the joist and how they sit in original position, there is no inspector who'll argue who did it. Photo the process. You can rip up to 1/4" and bevel the opposite edges of the joist for easier rolling in. Unless you have a palm nailer and a compressor, I wouldn't nail. Nails that did not sink is confidence destroyer.
If this is the only buyer you have, you should go through a pro for documentation.
If this is the only buyer you have, you should go through a pro for documentation.
This isn't rocket science I know enough to correctly fix and explain exactly what I did to fix and support my work. Internet is just for some good supporting advice, this forum has been extremely valuable to me over the years :smile:. Just wanted some advice on proper bolts, nails, or screws to use to fasten so there would be no questions. If they want an engineer to bless they can kiss my %$&^%&& this isn't a huge deal.
Yes this was the carpenters fix Wash, I know very poor work what can I say.
Thanks Carpdad, so your saying go 12" each w/ the deck screws and every 16" staggered with the 1/2" bolts?
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Screws do not have the same shear capacity as nails. This is why screw manufacturers don't recommend screws for shear service.
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I'm just saying, if I was the buyer's inspector on this house, I would advise my client to get the owner's repair blessed by an engineer. Anything you do to that joist will be a non-prescriptive repair, and any code official or astute home inspector would want it backed up by an engineer. And cutting through a floor joist like is pretty much a big deal. That, and the butchery the contractor left behind.
Have you thought about how long the sister member(s) has to be?
I've seen other's say the same thing. Yourself being an inspector I assume you would feel better seeing nails being used vs. screws.
Yes I have thought about how long the sister joist should be. Should be the same length as the brother joist :wink2: to be on the safe side. Anything anyone does to that joist is a non-prescriptive repair, the joist is cut, nothing can be done. The repair is the repair, of course there are different hardware to be used, some say screws some say nails some use adhesive, some use bolts, etc... Bottom line is it's a sister joist. Adding the equal length of the original joist and fastening them together is the proper way to correct/fix the issue.
Am really not sure, you cannot see from the pic but he ran up some 2x3 up into the dinning room from a hole he cut through the flooring from the crawl space.
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Wow, that is terrible. Sorry that you paid this "pro" to do that to your house.
Stuff like this is like 80% of why I DIY everything.
Stuff like this is like 80% of why I DIY everything.
100% on nails are better than the screws. Wood screws should be used but deck screws are more useful. Sistering with that many fasteners is over board, but as a diy, it is cheap insurance against not having an engineered information. You can double the fasteners but at that point, people just get suspicious.:smile:
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South Jersey is also under the IRC 2009; "
28 Built-up girders and beams, 2-inch lumber layers 10d (3" × 0.128") Nail each layer as follows:
32" o.c. at top and bottom and staggered. Two nails at ends
and at each splice." from; http://publicecodes.cyberregs.com/icod/irc/2009/icod_irc_2009_6_par013.htm?bu2=undefined
Notice here; you are also under IBC AND some State amendments, ask locally; http://www.cmdgroup.com/building-codes/new-jersey/
Gary
28 Built-up girders and beams, 2-inch lumber layers 10d (3" × 0.128") Nail each layer as follows:
32" o.c. at top and bottom and staggered. Two nails at ends
and at each splice." from; http://publicecodes.cyberregs.com/icod/irc/2009/icod_irc_2009_6_par013.htm?bu2=undefined
Notice here; you are also under IBC AND some State amendments, ask locally; http://www.cmdgroup.com/building-codes/new-jersey/
Gary
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