TF-hung floorframe over ICF wall top
Take a look at this detail, and tell me what you think of the hanger on the mudsill, with not-so-full bearing underneath.
This is where exterior porch floor finish (heavy bluestone flags over concrete) needs to come up right under the entry door sills. All under roof, of course.
Replies
I envision the floor buckling eventually.
Edited 6/1/2009 4:59 pm by gordsco
We are currently doing a similar installation. Top flange hangers are the BA's made by Simpson. They get nailed on the vertical plane of the mudsill - six 10d's. My concern was the rotation/ rocking of the joist along the length of the joist but the nails fastening the hanger to the joist prevent that. Very cool.
Simpson seems to have it all figured out. Their Tech Help is very good and my being on the East Coast allows me to call their West Coast locations after 5 when my site quiets down and I have time to focus.
Frankie
Flay your Suffolk bought-this-morning sole with organic hand-cracked pepper and blasted salt.
Thrill each side for four minutes at torchmark haut. Interrogate a lemon.
Embarrass any tough roots from the samphire. Then bamboozle till it's al dente with that certain je ne sais quoi.
Arabella Weir as Minty Marchmont - Posh Nosh
We use similar hangers with to support floor trusses on the sides of girder beams. Nails on top nothing on the sides. Nothing has fallen yet.
Bruce
What's the thickness of the foam at the top and bottom of the taper section?
Jon Blakemore
RappahannockINC.com Fredericksburg, VA
It's about a half inch at the top. Full thickness, 8 inches down, is 2-1/2"
One thing you gotta remember is that what is proposed to be hung from the mudsill, is one floorframe with a live loading of 40 psf.
Across the top of that wall sits the wallframe, going up and then picking up the second deck (30 psf live), then the roof on the top, at maybe 75 psf snow loading.
Furthermore, that roof loading can be coming from trusses spanning all the way over to the other side, maybe 35 feet in some cases, whereas those floor frames have much smaller tributary areas.
I'm not saying it's a great detail, I am just trying to put it in some context.
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"A stripe is just as real as a dadgummed flower."
Gene Davis 1920-1985
Who makes that top block? I haven't seen one before.Thanks, John
Amvic makes it. It is the block of choice, IMHO. Here it is priced as good or better than any, its corners are not handed, and its tapertop gives you additional bearing on both edges.
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"A stripe is just as real as a dadgummed flower."
Gene Davis 1920-1985
Looks completely acceptable to me.. You forget how strong a typical SIP is, it's about 200% stronger than the same wall stick framed.. If your concern is about the slight amount of cantilever over the foam of the ICF I wouldn't. I forget the exact amount of cantilever that is permitted with a SIP but your's sure doesn't seem excessive.. Don't forget the load path goes through the 2x6 the SIP is nailed to. it doesn't carry on down the edge of the SIP.
I reread your post and am going to take another whack at this.
What is drawn is very different from installing the joist hanger directly to the tapered ICF foundation wall. That installation would cause the load transfer to be plumb and want to shear off the tapered part of the wall.
By installing the 2x6 mudsill, the load is actually transfered to the foundation wall in a clockwise rotation, (pulling up at the mudsill anchor), downward load path parallel to the angle of the taper.
Hmmm...
Frankie
Flay your Suffolk bought-this-morning sole with organic hand-cracked pepper and blasted salt.
Thrill each side for four minutes at torchmark haut. Interrogate a lemon.
Embarrass any tough roots from the samphire. Then bamboozle till it's al dente with that certain je ne sais quoi.
Arabella Weir as Minty Marchmont - Posh Nosh
Top mount (hung joist) construction makes it an absolute bear to get electrical and plumbing into the wall from the basement. Not uncommon (if not thought out in advance) to have electricians and mechanical guys 'breaking out' some of the foundation wall in cmu construction - what would they tend to do here?
Jeff
Jeff Clarke
Plumbing really should never go in exterior walls, too great a chance of freeze up.
most plumbing goes through interior walls where it's easy access and no chance of freeze up.. wiring in SIP's is butt simple . You order wire chases where you want wires to go. If you forget it's really easy using a panel melter (looks like a modified charcoal starter) or simply do what I did put a extension on a spade bit and drill a channel through the foam (foam is extremely easy to drill through!)
If it is only for a porch, why not continue a concrete slab for the floor instead of wood?