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.
10 80# bags will fill about 6 cubic feet, so 375 bags should fill 225 cubic feet (30 x 30 x 0.25).ANS 2 -At least in my area, it would be much cheaper ordering this to be delivered by a concrete truck.An 80 lb. bag of concrete is 2/3 of a cubic ft. of concrete. 3 bags is 2 cu. ft. So for 225 cu.ft. youll need 338 bags of concrete.
80# bags are 0.6 cubic feet and it takes 41 to make a cubic yard. In that case, 60# bags must be 0.45 cubic feet and it would take 55 to make a cubic yard.
To calculate the volume of concrete needed to fill a 55-gallon drum, you first need to know the dimensions of the drum. Once you have the dimensions, you can use the formula for the volume of a cylinder (V = πr^2h) to calculate the volume of concrete required. Remember to convert the volume from gallons to cubic inches or feet for accurate results.
You need 1.16tonne. You need to know the weight of a bag of concrete and then divide 1.16 by that weight and that will give you the answer you need.
To fill 0.2 cubic meters, you will need about 21.6 bags. According to the site at the related link, a 20 kg or 40 lb bag of premixed concrete should fill an area of 1/3 cubic foot, which is 1/106th of a cubic meter. There is also a separate estimate of 108 20-kg bags per cubic meter, which provides essentially the same result.
10 bags. Each 80 lb bag is 0.6 cubic feet, and your hole is 6 cubic feet.
You can't estimate that without having a thickness. You have to be able to have an actual volume of space you want to fill up with concrete.
bags of what?
With a concrete crack filler
air
I use one bag to 1 1/2 bags per hole and fill the rest of the way back with tamped topsoil... whatever came out of the hole.