255 ft2
You need to specify the slab's width and the length as well.
You will need about 0.8 cubic yards - 1 cubic yard is a safe bet.
70 feet! The answer is in the question!
Concrete is man-made.
How many square yards in a 20x18 feet 3 inches thick
The recommended footings for a concrete slab are typically made of reinforced concrete and should be at least 6 inches thick and extend below the frost line in your area to prevent shifting or cracking.
The recommended concrete slab thickness for a house foundation is typically 4 inches to 6 inches.
The recommended thickness for a driveway concrete slab is typically 4 inches.
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.
The recommended thickness for a concrete slab is typically 4 inches for residential applications and 6 inches for commercial or heavy-duty use.
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The recommended depth for the footer when constructing a concrete slab is typically around 12 inches.
4 To 6 inches
The ideal thickness for a concrete slab when building a house is typically 4 inches to 6 inches. This thickness provides a strong and durable foundation for the structure.
Concrete driveways are no less than 3.5 inches to 4.5 inches.
Pouring a concrete slab is the pouring of a fresh unset concrete mix into a prepared area, where it is finished by floating etc to give the required surface, and it sets to form a slab.
If you made a sidewalk about 2.5' wide it would be about 13' long.