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# concrete drive

## concrete drive

#1
08-18-11, 05:40 AM
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concrete drive

Hi

I am extending my drive, and have laid 3.6cube but came up way short of what i need!! can anyone help me with how much i need to complete, i dont have anywhere else to put excess concrete so dont want to go way over the top, but at the same point i dont want to be way short...again lol

cheers.

#2
08-18-11, 07:34 AM
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You'll need to tell us what those numbers are....centimeters, inches, feet? And how thick is the slab?

#3
08-18-11, 08:38 AM
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The math is easy if you have the dimensions - length x width x thickness = the number of cubic units of material you need

#4
08-18-11, 04:11 PM
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If I'm not mistaken, 1 yard of concrete will fill 88 sq ft at 3.5"-4" thick.

#5
08-18-11, 04:47 PM
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Originally Posted by marksr
If I'm not mistaken, 1 yard of concrete will fill 88 sq ft at 3.5"-4" thick.
I heard it was 70 sq ft per yard @ 3.5-4" thick.

Maybe that is with extra because according to the math:
1 yard should be 27 cubic feet
27 cubic feet sliced into 4" x 12" x 12" slabs = 81

#6
08-18-11, 05:32 PM
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the numbers are cm , the slab will be 100mm thick

#7
08-18-11, 05:50 PM
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That can't be calculated without angles on the corners and the radius.

#8
08-18-11, 08:11 PM
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Ok boys here is the conversion

4180cm = 137.1'
5200cm = 170.6'
2750cm = 90.2'
1500cm = 49.2'
thickness of 100mm or 10cm = .32' or about 4"

This is one very large slab!!! Are you sure you didn't mean mm on your measurements?
If I was calculating per yard, your looking at about 154 yards of concrete which would be about 20 trucks in the US.

#9
08-19-11, 12:59 PM
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I agree with Tolyn, we need to check the units here because the magnitudes of the values aren't making sense.

#10
08-20-11, 02:43 AM
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i'm of the opinion that it should be measured form the longest width and the longest length, i think 1 cubic mtr would scrape it, but as i say, i dont want to come up short, but also dont want too much overs.

the measurements are mtr, ie 1.5mtr by 5.2mtr

hope that helps

#11
08-22-11, 08:02 AM
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Meters? Can't be, your measurements would all be exceeding a kilometer on each side.

#12
08-22-11, 08:19 AM
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It's mm in the original measurements...not cm. Thats what he meant by 1.5m by 5.2m in post #10

So...4.18m, 5.2m, 2.75m, and 1.5m are the correct labels on the drawing with a thickness of .1m

#13
08-22-11, 11:33 AM
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Ah, that makes sense

1.5 m x 5.2 m x .1 m = .78 m³

#14
08-24-11, 04:52 AM
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so to make sure, the thickness as .1 is 100mm which gives me a total of .78 cubic mtrs, which i think they only do .5 .6 or 1.0

appreciate all the help guys