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Concrete - Volume Estimate

Estimate required concrete volume per sq. ft. of slab

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concrete slab

Required concrete is in general calculated in cubic yards (cy). 

v =  0.0031 l w t                               (1)

where 

v = required concrete - (cy, cu. yards)

l = slab length (ft)

w = slab width (ft)

t = slab depth (in)

  • 1 cubic yard = 27 cubic feet
  • 1 ft = 12 in

Slab Concrete Volume

Depth
(in)
Volume
(cy/sq.ft.)
2 0.006
4 0.012
6 0.019
8 0.024
10 0.031
  • 1 in (inch) = 25.4 mm = 2.54 cm = 0.0254 m
  • 1 yd3 = 0.7646 m3
  • 1 ft2 = 0.0929 m2

Area Covered by Concrete

The table below shows the area (sq.ft.) that 1 cu. yard of concrete will cover for various depths.

Depth
(in)
Area
(sq.ft.)
2 162
3 108
4 81
5 65
6 54
7 46.3
8 40.5
9 36
10 32.4
11 29.5
12 27

Concrete required for concrete slabs can be estimated below:

 estimating concrete slabs

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