Building your very own concrete slab, patio driveway or walkway is fantastic home development and most diy house handymen are capable of completing this form of project. All the is compelled is part knowledge and the ideal tools.

You are watching: How many 80 pound bags of concrete in a yard

### Concrete (Sonotube) or Column

Download a cost-free automatic ready-mix, through the yard and quantities compelled of 60 lb. And also 80 lb. Pre-mixed bags - concrete calculator - (you must have actually Microsoft Excel or other compatible spreadsheet program)

Information top top concrete sealers.

Information top top hand mix concrete.

It need to be listed that cement, is among the 4 items that provides up concrete. Concrete is a mixture that cement, aggregate, sand and water.

### Square or Rectangle Concrete Slab: Notes:

Pre-mix concrete come in bags that are 60 lbs. And 80 lbs.A 60 lb. Bag provides 0.45 cubic feet the cured concrete.A 80 lb. Bag gives 0.6 cubic feet that cured concrete.If you have concrete ceded it is offered by the yard (which is a cubic garden = 27 cubic feet).

Following space the recipe to calculate how much concrete friend will call for for a square or rectangle-shaped shaped pour:

L (feet) x W (feet) x T (inches) ÷ 12 = cubic feet the concrete (CF)Number the bags the concrete needed:CF ÷ 0.45 = number of 60 lb. BagsCF ÷ 0.6 = number of 80 lb. BagsNumber the cubic yards that concrete needed:CF ÷ 27 = cubic yardsL = size in feetW = width in feetT = Thickness in inchesCF = Cubic feet of concrete

### Example:

A patio 10' long by 8' broad - 6″ thick

10 x 8 x 6 ÷ 12 = 40 cubic feet of concrete

10 x 8 x 6 ÷ 12 = 40 cubic feet the concrete

40 ÷ 0.6 = 67 (66.7) 80 lb. Bags the concrete

40 ÷ 27 = 1.5 cubic yards of concrete

### Circular Concrete Slab: Notes:

Pre-mix concrete comes in bags that room 60 lbs. And 80 lbs.A 60 lb. Bag offers 0.45 cubic feet of cured concrete.A 80 lb. Bag provides 0.6 cubic feet of cured concrete.If you have concrete delivered it is sold by the yard (which is a cubic yard = 27 cubic feet).

Following are the recipe to calculate just how much concrete friend will need for a one slab:

3.14 x r (feet) x r (feet) x T (inches) ÷ 12 = cubic feet of concrete (CF)Number of bags of concrete needed:CF ÷ 0.45 = number of 60 lb. BagsCF ÷ 0.6 = variety of 80 lb. BagsNumber the cubic yards that concrete needed:CF ÷ 27 = cubic yardsr = radius that the one in feet (1/2 that the diameter)T = Thickness in inchesCF = Cubic feet the concrete

### Example:

A circle 6″ thick wherein the circle has actually a radius the 5.5' (11' diameter circle)

3.14 x 5.5 x 5.5 x 6 ÷ 12 = 47.5 cubic feet the concrete

47.5 ÷ 0.45 = 106 (105.6) 60 lb bags of concrete

47.5 ÷ 0.6 = 80 (79.2) 80 lb. Bags of concrete

47.5 ÷ 27 = 1.8 cubic yards the concrete

### Concrete Sonotube , shaft Or round Footing: Notes:

Pre-mix concrete come in bags that room 60 lbs. And also 80 lbs.A 60 lb. Bag offers 0.45 cubic feet of cured concrete.A 80 lb. Bag gives 0.6 cubic feet of cured concrete.If you have concrete delivered it is offered by the yard (which is a cubic yard = 27 cubic feet).

See more: How Many Pounds Are In 12 Ounces ? Convert 12 Oz To Pound

Following space the formulas to calculate just how much concrete you will require for a circle, pipe or column shaped pour:

3.14 x r (inches) x r (inches) x H (inches) ÷ 1728 = cubic feet the concrete (CF)Number that bags that concrete needed:CF ÷ 0.45 = variety of 60 lb. BagsCF ÷ 0.6 = variety of 80 lb. BagsNumber of cubic yards that concrete needed:CF ÷ 27 = cubic yardsr = radius that the circle in inches (1/2 of the diameter)H = elevation in inchesCF = Cubic feet of concrete

### Example:

A shaft 8' high whereby the column has a radius that 5″ (10″ diameter tube)

3.14 x 5 x 5 x 96 ÷ 1728 = 4.4 cubic feet of concrete

4.4 ÷ 0.45 = 10 (9.8) 60 lb bags that concrete

4.4 ÷ 0.6 = 8 (7.3) 80 lb. Bags that concrete

4.4 ÷ 27 = 0.16 cubic yards the concrete