The density of 13mm crushed stone can vary depending on the type of stone and the compaction of the material. On average, 13mm crushed stone typically has a density of around 1.5 - 2.0 g/cm3.
Crushed stones are typically referred to as crushed stone or crushed rock. These crushed fragments are commonly used in construction and landscaping for a variety of purposes such as making concrete, paving driveways, and drainage applications.
Whereas a yard is a unit of length, a square yard is a unit of area. Therefore, one cannot ask how many yards are in a square yard because the units are incompatible. Perhaps you meant to ask How many square feet are in eight square yards. Since there are nine square feet in a square yard, eight square yards equals 72 square feet. There is another unit for measuring a volume of topsoil, stone, or cement. It, too, is called a yard but is really a cubic yard. It is an amount of material that will fill a 3' x 3' x 3' space. It is equivalent to 27 cubic feet. You can see how this could lead to confusion. Perhaps you wish to cover an area of eight square yards of ground with topsoil or mulch or stone -- whatever. The material is sold by the yard, but that yard (a unit of volume) is not the same as the square yard you used to measure the area of the ground. The question would then become How many yards of dirt do you need to cover an area of eight square yards? Which prompts the question How deep do you want it?
There are typically four grades of gravel: crushed stone, quarry process, stone dust, and pea gravel. Each grade varies in size and texture, with crushed stone being the largest and pea gravel the smallest. The grade of gravel you choose will depend on the intended use and location.
A gram measures weight. A liter measures volume. One does not translate to the other. Different rock has different densities. Is the rock granite or sandstone? A solid piece, large crushed stone, pulverized small stone, etc. An average for crushed stone is ABOUT 62.5 liters for 100 Kg.
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"4 inches" is a length. "7676 square feet" is an area. "4 inches by 7676 square feet" describes a volume, which is equal to 2,558.67 cubic feet. (= 7676/3, because 4 in = 1/3 ft.) So your question is better put as "How many tons of crushed stone does it take to cover an area of 7676 square feet to a depth of 4 inches?" The answer depends on the density of the crushed stone. I can't answer that, but I've given your question a clearer phrasing.
25 Yards
221.67 (2dp)
Not sure what 2b is but crushed concrete with 1 1/2" rock will cover about 60 square feet. 15 tons ends up being around 12 cubic yards.
64 cuft, about 2 and a third cubic yards
To determine how many slabs of stone you need, first convert the area from square feet to square inches. Since 1 square foot equals 144 square inches, 133 square feet is 133 x 144 = 19,152 square inches. Then, divide the total area by the area of one slab: 19,152 ÷ 40 = 478.8. Therefore, you would need 479 slabs of stone to cover 133 square feet, rounding up to the nearest whole slab.
However much you want. By suitably varying the thickness, you could, in theory cover the surface of the earth or even a larger area.The 'square feet' of area that it covers is 324/(depth in inches)
To cover a 30x30 area, which has an area of 900 square feet, you would need to determine the area of one 12x12 stepping stone, which is 1 square foot (12 inches x 12 inches = 144 square inches, or 1 square foot). Therefore, you would need 900 stepping stones to cover the entire 30x30 area.
Well, you would take the 7000 square feet of dirt and multiply it by the four inches of stone to get the 28000 cubic yards of stone. (28000 yds³)
A square foot will cover a square foot, regardless of the depth of the material the cover is made of.
3 in = .25 ft 220 sq ft x .25 = 55 cubic ft 27 cubic ft = 1 cubic yd 55/27 = 2 cubic yds.