Volume = 900 sqft * 1/12 ft = 75 cubic feet.
I need to know how thick the layer of gravel is meant to be.
It depends how thick the gravel is being laid - at 4 inches thick, a cubic yard will cover 81 square feet.
5ton
This question is incomplete. How thick it is expected to be put on. Is it being applied to currently black-topped area or on gravel. If this is for your own purpose of a driveway, check with a professional.
To cover 100 square feet with gravel that is 1 inch thick, you first need to convert the thickness from inches to feet: 1 inch is 1/12 feet. Therefore, the volume of gravel required is 100 square feet × (1/12) feet = 8.33 cubic feet. If each bag of gravel is 0.05 cubic feet, you would need 8.33 cubic feet ÷ 0.05 cubic feet per bag = 166.6 bags. Rounding up, you would need 167 bags of gravel.
I need to know how thick the layer of gravel is meant to be.
It depends how thick the gravel is being laid - at 4 inches thick, a cubic yard will cover 81 square feet.
That depends on the size of the gravel and how thick a layer you want to end up with.
You will need about 3.7 cubic yards (around 4.75 tons) of gravel.
5ton
1 371.42857 US gallons or 5.19142188 cubic meters
This question is incomplete. How thick it is expected to be put on. Is it being applied to currently black-topped area or on gravel. If this is for your own purpose of a driveway, check with a professional.
The amount of gravel needed to cover 252 square feet depends on how thick (that is, deep) you want the gravel. If you want the gravel to be 3 inches thick... Convert the measurement to the same units. We'll use feet. 3 inches = 1/4 foot Multiply the thickness times the area to get volume in cubic measure. 1/4 feet x 252 feet = 63 cubic feet Gravel in the US is usually sold by the cubic yard, which is 27 cubic feet Thus, 63/27 = 2 1/3 cubic yards 2 1/3 cubic yards of gravel will cover 252 square feet of area to a dept of 3 inches.
It would take roughly 66 bags to cover a 200 square ft area 2 inches thick
20 mm = 0.020 meters 18 square meters * 0.020 meters = 0.36 cubic meters
36 tonnes
It would depend on how thick you want to spread it.