## How many square feet is 100 yards of concrete?

10 x 10 = 100 square feet. 4 ÷ 12 = .33. 100 x .33 = 33 cubic feet. 33 x .037 = 1.22 cubic yards.

## How many bags of cement do I need for 100 square feet of concrete?

Ans. :- 7.6 no of cement bags (381.30 kgs) are required for 100 sq ft rcc roof slab 4 inch thick m20 grade concrete. Ans. :- 7.6 bags (381.30 kgs), 9.5 bags (476.10 kgs) & 11.4 bags ( 570.8 kgs) cement are required for 100 sq ft rcc roof slab 4 inch, 5inch & 6 inch thick respectively in m20 grade of concrete.

## How many yards of concrete per square foot?

According to the table above, one cubic yard of concrete placed at a thickness of 5-inches covers 65 square feet. In a perfect universe, our 1,080 square foot driveway will need exactly 16.62 cubic yards of concrete (1,080 square feet / 65 square feet equals 16.62 cubic yards).

## How to calculate the square footage of a concrete slab?

Conversion in other common units: Volume in Cubic Yards (yd3) = Volume in Cubic Feet (ft3) / 27 Volume in Cubic Meters (m3) = Volume in Cubic Feet (ft3) x 0.0283 Pi = 3.14 Circular Slab Outer Diameter (d1):metersfeetinchesyardsmillimeterscentimeters Inner Diameter (d2):metersfeetinchesyardsmillimeterscentimeters

## How many cubic feet in a bag of concrete?

A bag of concrete is measured by the cubic foot. (because bags are small compared to a cubic yard) An 80 lb. bag of concrete will yield 0.60 cubic feet (or 1.8 square feet @ 4″ thick) A 60 lb. bag of concrete will yield 0.45 cubic feet (or 1.35 square feet @ 4″ thick)

## How to calculate the volume of a cubic yard of concrete?

A cubic yard is equal to 27 cubic feet or 46,656 cubic inches, or 45 80lb bags. Use the following formulas to calculate the concrete needed for various types of pours. The volume for a rectangular space is equal to the length times the width times the height. For slabs, substitute the thickness for the height measurement.