4 inches = 1/3 foot
27 cubic feet = 1 cubic yard
Volume = 80 x 1/3 = 80/3 cubic feet = 80/81cubic yard = about 0.987654321 (really!)
To make one yard of concrete from 80# bags you will need about 40-45 bags. Each bag is about .67 or 2/3 cubic foot. you will need 27 cubic feet to make 1 cubic yard. Cheaper to have a redimix truck deliver, and a lot less work.
Volume of concrete required, in square feet = 27 x 4 x 0.5 = 54 cu ft, which is 2 cubic yards, so 80 dollars/pounds/yen/ringgit or whatever.
one (1) cubic yard of concrete four inches thick will cover 80 sq. feet. 85 yards x 81 = 6885 sq. feet.
You are mixing volume (square yard) and area (length x width). How deep do you want the dirt? One foot deep you need about 80 square yards of dirt.
1 yard = 36 inches so 80 yards = 80*36 = 2880 inches.
Wet concrete is approximately 150 pounds per cubic foot. So 80 pounds is approximately 1/50 th of a cubic yard.
80
Forty five 80 pound bags of cement are needed to make one cubic yard of concrete.
41 bags. Actual 40.5
it takes 45 Bags of 80# mix to make a cubic yard
This cannot be answered without knowing the width and depth.
there are 27 cubic feet in one cubic yard.
An 80 lb bag of concrete typically yields about 0.6 cubic feet when mixed. Since there are 27 cubic feet in a cubic yard, half a cubic yard is 13.5 cubic feet. To find how many 80 lb bags are needed, divide 13.5 by 0.6, which equals approximately 22.5 bags. Therefore, you would need about 23 bags of 80 lb concrete to fill half a cubic yard.
This all depends on the mix you want. I assume you mean cement when you mention the 80lb bag of concrete. I have pushed concrete in my day... Bag cement mix is the same as concrete. Don't be funny. How many 80 pound bags will make 1 yard of concrete? I want a definitive answer this time.
A typical 80-pound bag of concrete mix yields about 0.6 cubic feet of concrete. A 3-yard mixer has a capacity of 81 cubic feet (3 cubic yards). To fill the mixer, you would need approximately 135 bags of 80-pound concrete mix, since 81 cubic feet divided by 0.6 cubic feet per bag equals about 135 bags.
To make one yard of concrete from 80# bags you will need about 40-45 bags. Each bag is about .67 or 2/3 cubic foot. you will need 27 cubic feet to make 1 cubic yard. Cheaper to have a redimix truck deliver, and a lot less work.
0.6 cu yds 0.6 yards is incorrect. According to quikrete's website it would require 46 80# bags of concrete to cover 81 square feet at 4" thick, which is one cubic yard. Dividing 46 by 1 yard gives us approximately 0.022 yards per bag.