I have 40 s f.
Volume per bag of concrete.
Perfect for slabs walls columns tubes curbs and stairs just to name a few.
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.
Pre mix concrete bag calculator calculated at 133 3 lb per ft allow extra for waste cubic feet 100 bags 80 bags 75 bags 60 bags 50 bags 40 bags 25 bags 20 bags 10 bags per bag.
By 3 inch thick 1 4 ft area to be filled with concrete which will take 6 bags of concrete.
All calculations are rounded up to the next highest whole bag.
This equals to 3 x 0 6 2 bags of 80 concrete not 14 bags.
0 77 0 6 1 3 80 pound bags of concrete per post hole.
We love to stir fry and mix things up here with all sorts of internet businesses.
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.
Concrete volume hole volume post volume 1 03 0 26 0 77 cubic feet per post hole.
L of water per 80 lb 36 3 kg bag of concrete.
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.
This means the density of concrete is about 145 lbs per cubic foot.
How much concrete do i need.
How many bags of concrete do i need.
Concrete calculator is a quick and easy way to calculate the volume weight and number of bags of concrete you need per project.
Then divide the total weight by the density of the concrete.
Hand mixing instructions empty concrete bags into a suitable mixing container for each 80 lb 36 3 kg bag of mix add approximately 6 pt 2 8 l of clean water work the mix with a shovel rake or hoe and add water as needed.
Now that we have that information we can calculate the yield.
If i m wrong in my figures please let me know.
Complex areas curved walkway concrete calculation.
Complex areas can be broken down into small sections.