I agree. I don't know anything about the Jawhorse, but the Fein infomercial had the same effect on me.
I love, love, love my Fein tools, but seeing the homeowner-oriented infomercial for the Multimaster made me queasy, and the way I feel about the brand plummeted.
It may (or may not...) be good business to go after the DIY market, but you risk credibility with the pros. Always a tradeoff, one that applies to the magazine as well.
Yeah guys, in remodel work, you might occasionally have to cut into a finished (usually drywall, fer cripes sake)ceiling.
I'm still unclear why you couldn't cut a slot for some galvanized strapping and use that instead of hold downs, though.
When the ledger is parallel to the joists and the floor is already finished (making it impossible to nail the sheathing to the new blocking) we often use angle clips like A-35's to tie the blocking to the floor sheathing from below.
We use short structural screws up into the sheathing and floor, making sure not to go through the floor, of course, and pre-drilling if splitting is a concern. The screws don't have the same shear strength as nails, so we use multiple clips per block as necessary.
You still need to open up the joist bay to do all this, but you need to open it up to install the blocking anyway, and it's usually easier and cheaper to repair the drywall ceiling of the floor below.
Could you use MST's or such?
As far as the maine deck bracket goes, it appears to simply bolt to the rim joist (which would have to be the solid 2x or 1x LVL mentioned). It would apparently satisfy the bolting requirement for shear, but doesn't have the lateral resistance of the hold down, unless there's some method for tying it back to a joist. I haven't actually used the deck bracket, so I could be wrong.
The hold down's threaded rod is grabbing the joist like a drag strut and using the floor diaphragm to spread that 1500# of axial load out, hence the showing of max 6" nail spacing through the floor sheathing into the joist.
Also, I imagine if the floor joists run paralell to the ledger you'd need to install solid blocking through a few bays, again to drag that 1500# axial load through enough floor diaphragm nailing.
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