By 3 inch thick 1 4 ft area to be filled with concrete which will take 6 bags of concrete.
Volume per bag of concrete.
Now that we have that information we can calculate the yield.
Add up both the dry material in the bag 80 lbs and the water it takes to mix it up 1 gallon which weighs 8 3 lbs for a total weight of 88 3 lbs.
This means the density of concrete is about 145 lbs per cubic foot.
L of water per 80 lb 36 3 kg bag of concrete.
You can use this concrete calculator to help you determine the number of bags of quikrete concrete mix mortar mix or fast setting concrete you will need for the following projects.
Complex areas curved walkway concrete calculation.
This equals to 3 x 0 6 2 bags of 80 concrete not 14 bags.
Perfect for slabs walls columns tubes curbs and stairs just to name a few.
Pre mix concrete bag calculator calculated at 2160 kg per 1m allow extra for waste cubic metres 20 kg bags 25 kg bags 30 kg bags 40 kg bags per bag.
All calculations are rounded up to the next highest whole bag.
How many bags of concrete do i need.
If i m wrong in my figures please let me know.
Quikrete s concrete mix yield s about 15 cubic feet for every 20 pounds of mix so a 40 pound bag yields 30 cubic feet 60 pounds of concrete mix yields 45 cubic feet and an 80 pound bag yields.
How much concrete do i need.
Concrete volume hole volume post volume 1 03 0 26 0 77 cubic feet per post hole.
Concrete calculator is a quick and easy way to calculate the volume weight and number of bags of concrete you need per project.
Complex areas can be broken down into small sections.
We love to stir fry and mix things up here with all sorts of internet businesses.
For other bag sizes use table 2 to determine water content.
0 77 0 6 1 3 80 pound bags of concrete per post hole.
X 2 inches thick or 1 6 ft.
I have 40 s f.