Gravel is a widely used commercial product that has a number of applications ranging from decorative purposes to large-scale construction, such as roads. Once the volume of gravel necessary is known, the known density of the given type of gravel can be used to calculate the mass of gravel needed to complete the project. Multiplying the area to be covered by the desired depth yields the volume of gravel you will need. The ideal depth of gravel varies depending on the application, but a minimum of 2-4 inches of gravel is a workable baseline. ![]() To find the volume needed, determine the amount of area to be covered by gravel as well as the desired depth of the gravel. To determine how much gravel you need, determine the volume that the gravel must cover. Any other costs associated with a project (labor, delivery of materials, etc.) are not included in the estimate. Note that the price estimate provided by the calculator is solely an estimate based on the cost of materials. The calculator above can be used to estimate the amount of gravel necessary given a number of factors. The amount of gravel required for a given project is dependent on what the project is. In the Udden-Wentworth scale, gravel is categorized as granular gravel if it is 2-44 mm (0.079-0.157 in) in diameter or pebble gravel if it is 4-66 mm (0.2-2.5 in) in diameter. Two commonly used standards are the Udden-Wentworth scale (a scale commonly used by geologists in the US) and the international standard, ISO 14688. Size classifications of rock fragments (and gravel) can vary. For example, sand is made up of rock fragments smaller than those in gravel, while gravel is smaller than cobbles, and cobbles are smaller than boulders. Rock fragments are typically classified based on the size of the individual pieces that make up the aggregate. Gravel, along with other types of rock fragments such as sand and crushed stone, is commonly used for construction purposes, though it has other uses as well. Lava Rock 0.50 – 0.65 tons (1,000 – 1,300 lbs.) per cubic yardĪccurate calculations will save you time and money, whether you are budgeting for a DIY project or checking behind your contractor.Gravel is a loose mixture of rock fragments formed as a result of erosion. Limestone Base 1.35 tons (2,700 lb.) per cubic yard Washed Limestone 1.20 tons (2,400 lb.) per cubic yard Washed Gravel 1.35 tons (2,700 lb.) per cubic yard Some common landscape rock materials weigh as follows: If you need to figure out how many tons to buy, multiply your cubic yards by the weight in tons of the material. 25 (3 inches of pea gravel, in feet) = 19.625 The volume of a cylinder = (radius x radius) x 3.14 x height in feet.įor a ten-foot circle, your calculator would look like this: Your landscape rock coverage calculator would look like this:Ĭircular areas require a bit more calculation. This final number is how many cubic yards of material you will need.įor example, say you would like to cover a 10 by 10-foot area with 3 inches of pea gravel. The landscape rock formula is as follows: ![]() The depth of the stone in feet-divide the depth by 12.Here’s how to determine the volume of your stone: On This Page:Ĭompute the volume in square feet by determining these measurements first: Stone vendors sell landscape rock by the cubic yard, which is calculated by the volume of material. Planning your hardscape projects takes some mathematics to get an accurate idea of your needs. If you decide to design with these products, here is a landscape stone calculator to help you stay in budget and keep your costs down. You can mix styles and colors, and use the rocks for gardens, walkways, borders, driveways, and around trees and shrubs. ![]() Beautifying your outdoor space with landscape rock products will bring enjoyment, low maintenance, and added value to your home.
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