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# Concrete Calculation

#1
02-06-03, 05:40 PM
jeff collier
Visiting Guest
Posts: n/a
Concrete Calculation

I'M POURING A SMALL SLAB AND I AM WANTING TO KNOW HOW TO CALCULATE THE AMOUNT OF CONCRETE I NEED.

THANK YOU

#2
02-06-03, 05:57 PM
Member
Join Date: Nov 2001
Location: Taylors, SC
Posts: 9,261
Multiply the thickness by the length by the width. This will give you the volume of concrete needed.

#3
02-06-03, 08:19 PM
pmgca
Visiting Guest
Posts: n/a
Concrete

Hi,

In addition to the calculated volume, you'll need to consider +10%, to cover normal wastage,

Good luck!

#4
02-06-03, 08:38 PM
bungalow jeff
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Posts: n/a
Length x Width x Thickness (all in feet) will get you the volume in cubic feet. Divide that by 27 for cubic yards.

#5
02-10-03, 12:58 PM
Portable Welder
Visiting Guest
Posts: n/a
when figuring concrete calculations just as every one said length x width x thickness devided by 27 will give you how many yards.
Thickness may confuse you if you are pouring a slab 4" thick use .33 If you want it 6" thick use .50 dont forget your rat wall if its something other than a slab.
so if your going to to pour a patio 12'x12'x4" thick type it in like this 12 x 12 x .33 devided by 27 equalls 1.76 cu. yards and then give yourself some fudge factor. good luck