Interesting deck situation

A picture(s) of the slab would be most helpful.

And what's the aversion to free standing?

Freestanding looks like it'd be a whole lot better of an option than a ledger, if not your only option.

Piece of mind, legal and in a lot of cases less headache during construction.

You can use some big ol' stainless steel washers as standoffs. Use concrete anchors to bolt the ledger to the wall with the washers between the ledger and the concrete so there's a gap between. Then be sure to flash it correctly and it'll last for years. Or just build it free standing on 6x's.

pschieuer said:

You can use some big ol' stainless steel washers as standoffs. Use concrete anchors to bolt the ledger to the wall with the washers between the ledger and the concrete so there's a gap between. Then be sure to flash it correctly and it'll last for years. Or just build it free standing on 6x's.

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We don't know how strong that concrete is. Especially adding additional weight to it. You could reinforce the concrete or play it safe and go freestanding.

Touché. Free standing and sleep well at night. And if you're concerned about sway you can still anchor it to the concrete to eliminate that.

I wouldn't want to drill wholes in that let alone attach anything to it. Those free span slabs are usually reinforced well but not designed to take additional load..

Beam.... not ledger.... accross it if somehow you don't want to freestand.. That's a suspended concrete floor.... anybodies guess as to it's eng/structure.

Don't ledgers have to be at least 2x8? What inspector would allow that attachment?

It's a couple, maybe three, extra holes...

Looks to be a prefabbed slab (either 4 or 6") judging from the fact it looks grouted in the corner. Looks to be spanning a garage opening, it is not wise what-so-ever to ask part of that floor system to act as a header and a ledger support.

WAY to many things can go wrong by attaching to that.

Post and beam under the slab ?


J.

John Hyatt said:

Post and beam under the slab ?


J.

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We did one similar and needed a w8x18 I-beam underneath to carry the roof, the deck, and the floor over an 11' span. Doesn't look to be any steel under that span and as we all know wood would have to be big.

I'd do that one freestanding. Two extra holes and one extra board.

Why's the hose bib so high?...Is there an NBA star living there or just a hacked opening? :laughing:

Thats only about 42 inches off the ground and its a crawlspace underneath. Looks like freestanding it is. I guess i was just a little caught off guard by the suspended concrete pad, not to common in my area.

wooddan said:

Thats only about 42 inches off the ground and its a crawlspace underneath. Looks like freestanding it is. I guess i was just a little caught off guard by the suspended concrete pad, not to common in my area.

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Me too.... I'm just a simple residential guy....

Can anyone with more expertise/experience explain and tell us how that is done...

Thanks.... Just curious

superseal said:

lots of support, steel and concrete is one way :whistling

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Thanks Super..... I've certainly seen that from a layman's view in commercial construction..... how do you suppose they did that in the OP's situation...and also why verse conventional???

Pro's and Con's


(I was just asking my son a similar question. He has been contracting/involved with the 15 billion Stephen Ross Hudson Yard (NYC) project..... but he's in a suit job temporarily, and doesn't really have access to the site. He gets to walk it (near it) every once in a while, and tells me the immense size of piers and steel involved.)

I'm not going to learn commercial (too old) but still find those asemblies interesting.....

Best