Building your own concrete slab, patio driveway or walkway is great home advancement and many diy home handymen are qualified of perfect this type of project. All that is forced is some knowledge and also the appropriate tools.

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### Concrete (Sonotube) or Column

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

Information on concrete sealers.

Information top top hand mix concrete.

It need to be detailed that cement, is among the 4 item that makes up concrete. Concrete is a mixture the cement, aggregate, sand and also water.

### Square or Rectangle Concrete Slab:

Notes:

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

Following are the recipe to calculate just how much concrete friend will call for for a square or rectangular shaped pour:

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

### Example:

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

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

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

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

40 ÷ 27 = 1.5 cubic yards the concrete

### Circular Concrete Slab:

Notes:

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

Following are the recipe to calculate how much concrete friend will require for a circular slab:

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

### Example:

A circle 6″ thick where 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 that 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 of concrete

### Concrete Sonotube , tower Or ring Footing:

Notes:

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

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Following room the recipe to calculate exactly how much concrete you will need for a circle, pipe or column shaped pour:

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

### Example:

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

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

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

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

4.4 ÷ 27 = 0.16 cubic yards that concrete