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Old 06-26-2010, 03:41 PM   #1
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Expanding my Deck

I currently have a smallish deck off the front of my home that I wish to make bigger. I would like to remove the existing deck and build a new, slightly larger one, in it's place.

My main question/concern is: Can I use the existing footings? How far out from the footings can I have my new deck overhang?

The whole job would be a lot easier and faster if I didn't have to pour new footings. Any information would be a great help to me. Thanks.


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Old 06-26-2010, 07:05 PM   #2
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Size of existing deck ? New deck ?
Distance between footings ?
Beams/joist you will be using ?
Design of new deck ?
Ledger on house ?


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Old 06-26-2010, 08:35 PM   #3
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The current deck it 8' x 14' and I would like to make it 10' x 16' if it's possible. Two sides of the deck are attached to the house and there are two footings. Both footings are on the long side of the deck one at the corner and the other at the half way point. So they are approx. 7' apart. I'm new enough to deck building and early enough in the planning process that I am open to suggestions in the beams/joist department. I'm sticking with the plain old boring rectangle design.

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Old 06-26-2010, 08:43 PM   #4
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Step 1, check with the local building inspector, decks typically have very strict codes associated with them. Failure to follow code may result in an unpleasant need to rebuild later.

Most people build from pre-engineered plans that are approved by the local building department. This insures that the structural elements are properly sized, you use the proper connection techniques, railings are correctly detailed etc. If you want to reuse footings, you may need to either develop a custom plan, or modify an off the shelf plan to relocate a joist or two to utilize the footers. Assuming the footers are built to code, that is.

You can also buy a book on deck construction from any of the big box stores, they will typically show you how its done.
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Old 06-26-2010, 09:20 PM   #5
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If you base your new deck on the new deck code, it will pass plans inspection and carry loads safely: http://www.awc.org/Publications/DCA/DCA6/DCA6-09.pdf

Be safe, Gary
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