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No one likes running out of materials during a project, so calculating the right amount of gravel needed for your driveway is an absolute must. Multiply your driveway’s length by width by the depth of the gravel (in feet). For gravel depth, convert to a decimal (i.e., 4 inches is 0.33 feet). This will give you the cubic feet of material that you need. 

If you’re looking for cubic yards, divide that above number by 27.

While it is possible to plow a decomposed granite driveway by going very slowly, doing so can cause a driveway to disintegrate much sooner than average. This is why decomposed granite is not considered the best driveway material for cold weather. It is rarely used in the Northeast or other parts of the country that experience regular snowfall.

To determine how much decomposed granite you need for your project, you need to first figure out the square footage of the surface. After that, you need to decide how deep the granite will go. Once you have these figures, you can use an online calculator to convert these measurements to cubic feet, or you can simply multiply the three numbers (in feet) to determine the number of cubic feet of decomposed granite you need. It’s a good idea to get about 5% to 10% more than you need just to be safe.

The answer to whether or not you need to get a permit before you start your driveway can vary widely based on local ordinances and the scope of your driveway ideas. In most urban and suburban areas, a permit is needed before building a new driveway to ensure that a homeowner is using safe materials and proper drainage practices while designing and constructing a new driveway. In some rural areas, a homeowner may not be required to apply for a permit. When building a new driveway on your own, always check with your local building department to see if you need to request a permit. When hiring a driveway contractor, verify that the right permits are being used before driveway construction begins.