Determining how much concrete you need involves calculating volume and square footage.
The thicker the slab, the less area the substantial bag will cover.
80lb is the most popular bag size of QuickCrete premixed concrete.
And that 80-pound bag of 36.3 kg of substantial mix yields about 0.60 cubic feet (17 liters) of concrete.
One cubic yard contains 27 cubic feet of concrete.
If you divide 27 by .60, that equals 45 bags. One 80lb bag of the quick-rate concrete mix will yield about .60 cu.
An 80lb concrete bag will cover more per yard than a lb bag.
Here’s how many bags of concrete you’ll need to buy if you plan to do a concrete project.
After all, you want to avoid ending up with too much or too little concrete.
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So we’ve done you a favor and calculated the number of bags of cement in a yard of concrete for a few composite projects:
A 4-inch thick slab is about 2 yards per cubic foot so it will take about 50-75 bags per cubic yard.
Three inches thick, 125-150 bags per cubic yard.
Five inches thick: 63-81 bags per cubic yard. 20% more than the thickness in inches because the density of bagged concrete is greater than 1.
An 80lb bag of concrete gives 16 cubic feet or 0.60 cubic yards, so you need 45 loads of 80lb for one cubic yard.
The math behind it was elementary, determining the quantity of the 90lb bags as we know there are 27 cubic feet in one cubic yard. All you need to do is to divide 27 by 0.68. How many square feet of concrete will an 80-pound bag cover:
It depends on your thickness.
- A 2″ thick, 80-pound bag of concrete will fill 3.6 square feet.
- A 4″ wide, 80 lb bag of concrete will fill 1.8 square feet.
- A 6″ wide, 80 lb bag of concrete will fill 1.2 square feet.
They will give you a value of 40, including the 90lb bags needed to concrete one cubic yard.
This has to be one of your better stupid questions.
You will need to use about 45 80-pound bags or 90 40-pound bags.
You have ordered an 80lb (36.2kg) bag of concrete, which comes to about 0.60 cubic meters.
- So, we know that 3 feet = 1 yard
- So, 3 ft x 3 ft x 3 ft = 27 cu. Ft. And 1 yard x 1 yard x 1 yard = 1 cu.
- That means 27 cu. Ft = 1 cu. Criterion
- So, how many bags of concrete do you get in the yard? You will need to divide 27 cubic feet by 0.60.
- 27 /0.60 = 45 bags
- So, you will need 45 bags of concrete for one yard of work.
Eighty-pound concrete mix bags are ideal for steps, walkways, sidewalks, ramps, curbs, and patios.
It is a ready-to-use mix as concrete consists of a premixed mixture of Portland cement, sand, gravel, and other approved materials.
An 80-pound bag of cement, stone, and sand as concrete is about 80/133 = 0.60, which means 0.60 cubic feet for each weight.
There are 27 cubic feet in a cubic yard; Thus, a cubic yard of 80 lb concrete mix would be about 27/0.60 = 45 bags of 3600 pounds.
The 80lb bags depend on the concrete required for a slab size of premixed concrete.
The ideal is a ready-mix concrete made of sand, gravel, cement, and other materials.