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jrepp 04-22-2009 02:46 PM

Attaching Floor Joist To Solid Core CMU basement wall
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Which is the best way to attach the floor joist: to the top or the side of a wall?

jomama45 04-22-2009 03:37 PM

Definately on top of the wall, on a mud sill of course, & you probably wont need the hangers then.

Jarrod 04-22-2009 04:19 PM

Yes, I agree. On top of the wall. If you dont know you'll need to put a treated plate down on CMU and it must be anchored
into the block either with wedge anchors or threaded anchor that requires epoxy to glue it into the pre-drilled hole. Check
with your local code for depth and anchor size. Then you can build your joists on the plate and nail them in.

PaliBob 04-23-2009 12:30 PM

jr, Nice Illustration

Gary_602z 04-23-2009 12:36 PM

Your house plans should show where,if you do it wrong you will be changing ceiling heights and lengths of drywall needed to finish.


Termite 04-23-2009 03:57 PM

I suppose it could be mounted to the side of the wall on a ledger, but that would be because of some extenuating circumstance and certainly isn't the norm. 99% of the time the joists and rim joist sit on top of the foundation wall on a 2x6 treated mudsill.

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