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Old 08-30-2012, 03:14 PM
5 posts, read 9,140 times
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I need to replace the stairs at my back door (just north of downtown San Antonio). Can anyone offer answers to the following:

1. Can I use 4x4 posts or do I need 6x6 as the upper landing is just over 6' from grade?
2. How deep do the footings need to be?
3. Which is better, attaching the upper landing to ledger board or make it free floating on 4 posts?
4. The skirting behind the lower landing has no beam or joist behind it. Should this landing then be placed on four posts/footings?

I know I can build this myself, just want to make sure it's to code. I've read the IRC for decks and it seems simple enough to follow but, can anyone offer design tips, construction advice? Of course, I know I can have it built, but I've got the time.

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Help with stairs at back door-side1.jpg  
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Old 08-30-2012, 04:49 PM
Location: Seaford, Delaware
3,471 posts, read 17,264,227 times
Reputation: 2625
Have you considered getting pre-made metal steps? I replaced a set of steps on a 2 story with similar turns. I put in a spiral staircase. You can get premade lengths of steps to fit you area. they come with complete instructions. The reason I mention it, the fire safty for exits. I think it may even be code if you replace wooden steps. (don't really know).
I would make sure the landings are attached to a ledger board with lag bolts. 4X4 should be enough support. I usually bury them 2 feet in concrete.
Good luck with it. I'm sure either route you take will be sufficient.
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