Home>Discussions>YARD & GARDEN>Decks, Patios, & Porches>Attaching wood steps to an elevated concrete deck
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cosmopup
Attaching wood steps to an elevated concrete deck
cosmopup

Well I have looked almost everywhere and I am perplexed. I have a house which was built in the 70's and it has an elevated (8') concrete deck. I am wanting to build stairs to the ground level and I have a little bit of an idea but I need to get some opinions.

The idea is attaching the ledger board to the concrete deck via concrete wedge anchors and go from there. Any advice?

dj1
Re: Attaching wood steps to an elevated concrete deck
dj1

Use expanding anchors (like HILTI), every 12". Seal around them with silicone.

Since it's for stairs, have the thing inspected and approved.

Mastercarpentry
Re: Attaching wood steps to an elevated concrete deck
Mastercarpentry

I'd make a call to the local codes department and ask to speak with an inspector. They will be happy to tell you what they'd like to see as a ledgerboard and how to fasten it. These guys are pretty busy so have the conversation thought out ahead of time and keep it short.

These days, most of the codes in force where I live require that the entire stringer top be supported by a ledger or through other adequate means such as bolted brackets. I can see several approaches here remembering that it doesn't all have to be wood and it may be better if it isn't. For instance a wide angle iron underneath with a wood face attached for a ledger; that would be stronger than all-wood bolted up from underneath. Posts under the stringers at the top would also provide vertical support so less would be needed to tie into the slab. Lots of possibilities.

Do get a permit and inspection- they are your only legal defense should anyone ever be harmed (even by stupidity) by those stairs and your homeowners insurance company will require that too.

Phil

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