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Old 11-26-2011, 11:19 AM   #1
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This is my first post!

I will be building a 12x16 screen porch in the spring. I have seen several plans for footing posts and I am wondering what my best options are.

We are in a heavy frost region (Montreal) and our town requires cement footing posts to be 52" into the ground.

My question is, am I better to have the decking 4x4 support posts in with the poured cement or attached on top. My gut feel is to go on top so if I need to do any repairs down the road for whatever reason, it would be easier.

Any input would be appreciated.

... Eric

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Old 11-26-2011, 11:37 AM   #2
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canadian code requires all deck posts supporting the deck must be 6x6's. 4x4's are only for hand rail posts.

regarding location of the post, dont set the post in the concrete, one it will speed up rot and two its easier to get the posts in a straight line after placing the concrete. simply set post brackets into the concrete or fasten them down with wedge anchors after teh concrete cures

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Old 11-26-2011, 01:17 PM   #3
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Quote:
Originally Posted by woodworkbykirk
canadian code requires all deck posts supporting the deck must be 6x6's. 4x4's are only for hand rail posts.

regarding location of the post, dont set the post in the concrete, one it will speed up rot and two its easier to get the posts in a straight line after placing the concrete. simply set post brackets into the concrete or fasten them down with wedge anchors after teh concrete cures
Thanks, I had not realized that 6x6 were required. It sure makes sense though. I've built several 'on ground' decks over the years but never anything off the ground and with a roof.

I'm still sorting out what want to do, then I'll need to get my municipal permit.

...Eric
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Old 11-26-2011, 06:06 PM   #4
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true, you will need a sketch or a actual drawing to get your permit
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Old 01-16-2012, 03:27 PM   #5
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Another question, how close to my house basement foundation can I pour cement posts to support the porch?

I have a brick facade and therefore I can't have any weight on the ledger board itself; it will be used to attach the porch base to the house. I therefore will pour some posts for support back towards the house. The posts need to be 52" below ground per code here.

My initial thoughts are to pour the posts 2' out from the house foundation.

Any thoughts?

... Eric
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Old 01-16-2012, 03:53 PM   #6
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2' max. How old is your house? Reason I ask is if its fairly new you might to dig to virgin soil. Typically the depth of your basement. All of the dirt around your foundation is back fill. I would still use a ledger to prevent racking.
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Old 01-16-2012, 05:15 PM   #7
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Thanks,

The house is 27 years old and my guess is I can dig fairly deep.

I'm going to use a ledger but not for load bearing, only to hold the structure to the house.
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Old 01-16-2012, 06:14 PM   #8
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There isn't an issue just going 48" since the soil hasn't been disturbed in so long. Good luck with your project.
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Old 01-16-2012, 06:30 PM   #9
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Thanks,

... Eric

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