Small concrete fill


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Old 04-28-16, 06:41 PM
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Small concrete fill

I have about a 6'x4' patch of dirt in front oh my house. It is kind of framed in by the perimeter of the house - front edge of the foundation and and concrete stairs. The driveway way - concrete - is on the other edges. So I don't need to build a form, I just have to fill the area.

The dirt is kind of sandy. Do I need to use any rebar for this small space?

My plan was to wet the sandy dirt and compact it. How deep should I make it - from the height of the existing concrete? 5"?
 
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Old 04-29-16, 03:03 AM
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What will this new slab be used for? Generally 4" thick is good enough for most applications although sometimes it's beneficial to have a gravel base under it.
 
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Old 04-29-16, 03:28 AM
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in ca, you're probably fine,,, tamp down your soil as best you can - sprinkle wtr on it for more compaction - place & finish the conc - joint it into 1/4's - broom texture

IF you wish, you could put some gravelly stuff down 1st to save on conc - 80# bags yield approx 2sf @ 4" or, in your house, 12b,,, 5" takes 15b - is the 5extra bags worth $20 to get gravel ? i'd pay the $20 for the extra conc
 
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Old 04-29-16, 08:34 AM
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It might be used to have a car park in the area, but maybe not. Its mostly fr aesthetic purposes, and to fill this spot that always gets weeds.

I guess 4" is fine.


in ca, you're probably fine,,, tamp down your soil as best you can - sprinkle wtr on it for more compaction - place & finish the conc - joint it into 1/4's - broom texture

IF you wish, you could put some gravelly stuff down 1st to save on conc - 80# bags yield approx 2sf @ 4" or, in your house, 12b,,, 5" takes 15b - is the 5extra bags worth $20 to get gravel ? i'd pay the $20 for the extra conc
by jointing you mean using the edging trough? Do I need control lines in the center?
 
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Old 04-29-16, 11:12 AM
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For such a small area, control joints won't be necessary--unless there are already joints in the surrounding border concrete. If that's the case, aligning control joints in the new pour with the existing joints will prevent irregular cracks from spreading into the new placement from the existing joints.
 
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Old 04-29-16, 06:43 PM
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There are control joints in the surrounding area but the side that isn't against the foundation and stairs is a curve, and the concrete next to it is squares. So I don't think it would look right - there would be too many joints.

The area is like this:

 
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Old 04-29-16, 07:37 PM
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If you won't bother aligning new joints with existing, at least you could (or should, more accurately) use a bond-breaker between new and old concrete. That way, the existing joints won't telegraph through into the new pour.
 
 

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