The cross-sectional area of a concrete slab is the total area of the slab when viewed perpendicular to its length and width. To calculate the cross-sectional area, you multiply the length of the slab by the width of the slab. This measurement is crucial for determining the amount of concrete needed for a project and for ensuring the structural integrity of the slab.
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The cross sectional area of a slab can be found by squaring the height of the slab.
V of a circular slab = thickness of the slab multiplied by (pi multiplied by the radius2)
Multiply the length by the breadth. eg if slab is 2 ft by 3 ft then area of slab = 6 sq feet
14.8 cubic yards will work but round to 15 to be sure.
For a standard 4-inch thick slab, this area needs at least 3.95 cubic yards.
A 9x9 foot slab 4 inches thick requires a minimum of 1 cubic yard. If you go to 6 inches thick you will need 1.5 cubic yards.