To calculate the number of 80-pound bags of Quikrete needed, first determine the volume of the slab in cubic feet. The volume of a slab that is 4 inches deep, 4 feet wide, and 7 feet long is 4/12 (0.33 feet) x 4 feet x 7 feet = approximately 9.33 cubic feet. Quikrete typically covers about 0.6 cubic feet per 80-pound bag, so you would need about 16 bags (9.33 cubic feet ÷ 0.6 cubic feet per bag = 15.55 bags, rounded up to 16).
You would need 31, 80 pound bags to cover 1 cubic yard at 4 inches deep. If you would like the depth to be 6 inches, 45 bags would be needed.
50lb bags 3.7 60lb bags 3.1 80lb bags 2.3 90lb bags 2.1 These amounts are for using the redi-mix bags.
To calculate the number of 80-pound bags of ready-mix concrete needed for a 22 square foot area at 4 inches deep, first, determine the volume in cubic feet. The volume is 22 sq ft × (4/12) ft = 7.33 cubic feet. An 80-pound bag of concrete typically yields about 0.6 cubic feet. Therefore, you would need approximately 12-13 bags (7.33 / 0.6 ≈ 12.22).
how deep?
To many!
To calculate the volume of the space, multiply the dimensions: 18 ft × 18 ft × 8 ft = 2,592 cubic feet. An 80 lb bag of Quikrete typically fills about 0.6 cubic feet. Therefore, to find the number of bags needed, divide the total volume by the volume per bag: 2,592 cubic feet ÷ 0.6 cubic feet/bag = 4,320 bags. You will need approximately 4,320 bags of Quikrete to fill the space.
It depends on the volume of the bag and how deep you want the gravel to be.
There is no way to answer that without knowing how deep the concrete will be.
You would need 31, 80 pound bags to cover 1 cubic yard at 4 inches deep. If you would like the depth to be 6 inches, 45 bags would be needed.
4.4 bags for each 1-foot deep. 2.2 bags for each 6-inches deep. Each 5-ft3 bag will cover the area to 2.72 inches deep.
50lb bags 3.7 60lb bags 3.1 80lb bags 2.3 90lb bags 2.1 These amounts are for using the redi-mix bags.
The number of bags of concrete needed for setting a fence post depends on the size and depth of the hole. Typically, one bag of concrete is enough for a 4-inch diameter post hole that is 2 feet deep. For larger or deeper holes, you may need more bags of concrete. It is recommended to consult a professional or follow the instructions on the concrete packaging for specific guidance.
16 bags for every 3 inches deep
12.3 bags for every 2 inches deep. (rounded)
I presume the 6 mean 6 inches, so 1/2 ft. The volume of the garden is 4.5 cu ft. So you will need between 2 and 3 bags.
To convert the weight of the sand into a volume and find out how much you need you would need to know the density of the sand as the more dense it is the less sand there will be in a 50lb bag and the more bags you would then need to fill the yard
The volume of 36ft2 to a depth of 6" = 1/2ft is 36ft2 x 1/2ft = 18ft3. Each bag contains 5ft3 so 18/5 = 3.6 bags are needed to cover the area, so 4 bags would have to be purchased, with 2/5 bag left over.