Concrete Sidewalk

Questions and answers on how to convert things from one unit or system to another
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Concrete Sidewalk

Postby Concrete Dummy » Fri Jul 29, 2005 5:16 am

I will be pouring a concrete sidewalk/patio slab and need to know how much concrete I need.
I did my own calculations, but do not trust them.
Here is what I am building (Broken down into measurable squares)
All are measured in inches and will be a 4" slab/sidewalk
1: 36" x 96"
2: 91" x 89"
3: 43" x 44"
4: 90" x 45"

I would like to know how much this converts into for a 4 inch slab/sidewalk and how much it converts into Cubic Feet.
Like I said, I did my own calculations but do not trust them before purchasing the concrete.
Thank you,
Concrete Dummy
Concrete Dummy


Postby kurtk » Sat Jul 30, 2005 6:02 am

where ever you decide to get the concrete from will tell you how many yards you will need ,with those measurements

Postby Guest » Sat Jul 30, 2005 6:08 am

I multiplied those dimensions by 4" then divided by 1728 cu in/cu ft. I get:
1: 8.0 cu ft
2: 18.75 cu ft
3: 4.38 cu ft
4: 9.38 cu ft

Total: 40.5 cu ft = 1.5 cu yd

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