I am framing a garage/ MBR. Not on the plans, but the HO wants to drop the attached bath floor(one plate)so that they can put in tile/backer/radiant. I can’t see how to attach the subfloor to the I-joist. Can I attach a ledger to the web? Can I drop in a LVL and cantilever the floor over to the next I-joist? I am using 3/4 subfloor and am having the devil’s own time trying to get the pieces to mate(t&g), even broke a screw using my pipe clamps. I am assuming its the 100% humidity we have here in the Carolinas.(Sometimes) Has anyone had success with the “Bo-Wrench” for this problem? Or am I just trying to over due? Am aiming for a fat sixteenth, too much?
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The T&G thing is a separate question correct?
For getting the T&G together, you can put a sacrificial 2x4 laying across the joist and up against the Grooved edge of the sub-flooring, stand at the edge of the sheet and put a the tips of your feet on the 2x4 to keep it in place and knock at with a sledge until you get it where you want it
Never be afraid to try something new. Remember, amateurs built the ark, Professionals built the Titanic.
Write up a CO taking out all I-joist under the BR, replace with new I-joists 1 1/2" smaller and layout 1' OC. Check with Boss Hogg on this.
Changes in floor elevation after construction are expensive. $15000 and up is not unreasonable.
I know you want to help this client, but structural changes are a real kicker in the wallet after construction... repeat after me ... the toe bone is connected to the foot bone, the foot bone is connected to the ankle bone ... ... ... the neck bone is connected to the head bone. Well maybe not the last in your client. hehehe.
SamT
"Law reflects, but in no sense determines the moral worth of a society.... The better the society, the less law there will be. In Heaven, there will be no law, and the lion will lie down with the lamb.... The worse the society, the more law there will be. In Hell, there will be nothing but law, and due process will be meticulously observed."
Grant Gilmore, The Ages of American Law (New Haven: Yale University Press, 1977), pp. 110-111.
From 32866.117
If you are dealing with new construction just step down one size of tji floor joist. It will give you a 2 in' drop
I read the question as the addition is just in the begining of framing stages, not in existing structure. Bath area wants subfloor dropped 1.5" or so, to allow for tile and radiant.
For purpose of this discussion, say that the bedroom is framed with 12" I-joist, and bath floor is floored with 10" I-joist. He is asking how the subfloor, which will extend past the last 10" i-joist to the side of the 1st 12" i-joist, will be attached to be supported at the 12" i-joist. He asks if he should attach a ledger to the side of the 12" i-joist to catch the subfloor from the bath. Do I read this right?
For me, the answer is to have two joists set side-by-side at the division between the MBR and MBA. One 12", to support the subfloor from the MBR, and one 10" to support the subfloor from the MBA (master bath).
Of course, sorry to sound harsh, but if this is any indication of your skill level/experience, are you sure you are qualified to be framing an addition for hire? Maybe you should consider contracting with a carpenter-level professional to help/consult on the project? I apologize in advance if I mis-read your capabilities or lack thereof by your description of the situation. Where in NC are you?