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TOPIC: sloping concrete
#4941
sloping concrete 3 Years, 10 Months ago  
We would like to build a deck over a concrete slab, but part of it slopes. The finished deck would be deeper than the concrete...about half over concrete half on the yard. Is this possible? If so, how do we level the part on the sloping concrete? Thanks!
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stevecari (User)
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#4945
Re: sloping concrete 3 Years, 10 Months ago  
In most cases it is possible to build your deck half on the concrete slab and half on the yard. To do that you can space out the dek-blocks in the required locations and use a 4x4 post between the dek-block and the deck frame to make sure the deck is level. This should work unless your concrete slab is drastically sloped. A slight slope will not affect the connection for the 4x4.
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#4947
Re: sloping concrete 3 Years, 10 Months ago  
Thanks! What would you consider a steep slope? It's not what we thought of as steep. We had figured we would be using the 4x4's, varying the height to make it level...would they be cut it at a slight angle to compensate for the slope? Thanks again!
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#6432
Re:sloping concrete 1 Year, 6 Months ago  
i am doing something similar. Did you finish the deck? if so did you just put the 4x4 on top of the concrete slab to level? did you use anything to secure the 4x4 to the concrete or just let them sit on the slab?
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uresh patel (Visitor)

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#6435
Re:sloping concrete 1 Year, 6 Months ago  
The best thing to do is take the concrete out. If the concrete is not sloped very much then you should be able to put the deck over the concrete. In most cases the concrete is not frost protected so you can put half the deck over the patio and half the deck on the grass.

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