Part 2 Gathering Materials. 1. Calculate how much gravel you will need. To determine this, you need to multiply your driveway’s length (in feet), width (in feet), and depth (in feet), then divide by 27 to get the cubic yards of gravel. The depth of the gravel can vary, but should be at least 4-6 inches.
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1 Place sticks or landscape stakes in the ground every 8-10 feet along the length of one side of the area that will be your driveway.  Place a second set of stakes at least 10-12 feet across from the first set of stakes to mark the width of the driveway. You may want to make the width 14 feet if your driveway curves.
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1 You might want to use a tiller to loosen up the soil and make it easier to dig out.  The amount of soil you remove depends on how many layers of soil you are planning. You should dig 4-6 inches of soil for every layer of rocks you plan to put down.
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1 You could also add some additional gravel down the center of your driveway and slowly scrape it towards the sides a little at a time.  Don’t go too crazy with the grading; you don’t want your driveway to look like a pyramid. The ideal grade is very subtle, with the middle 2% to 5% higher than the sides.
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Flagstone for a driveway. I am biding on a pretty large job which has a lot of flagstone work. One aspect is laying a flagstone driveway. A concrete pad will be poured of course and the stone will be laid on a bed of mortar.
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The final layer of gravel should have pieces of angular stone no larger than a golf ball, with many of the stones being the size of marbles. If you can install 10 - 12 inches of gravel on top of the geotextile fabric, you should have a gravel driveway that will last decades.
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Be sure the gravel driveway has a crown in it. This means the center of the driveway is always higher than the two edges. The crown allows water to flow off to the sides of the driveway preventing any ponding of water on the gravel surface. Gravel driveways need some periodic care in the form of grading or dressing.
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I have no experience with a concrete driveway mortared with flagstone, but I definitely do have experience with flagstone mortared onto concrete porches found in the front of most homes. I do know that flagstone, which is a natural rock and can have natural occuring veins of differing minerals, can crack or spall.
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Low spots need to be filled with gravel scraped from any high spots. If your driveway has curves, you will discover that car and truck traffic tends to push loose gravel to the outer edges of the curves. This gravel needs to be brought back to the center and inner part of the curves. Gravel driveways built on hillsides need ditches on the high side of the driveway.
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Using a shovel or hiring someone with a backhoe, remove the top layers of grass and dirt from the marked-off driveway area. 1  You might want to use a tiller to loosen up the soil and make it easier to dig out.  The amount of soil you remove depends on how many layers of soil you are planning.
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how to make driveway flagstone
To make driveway flagstone a concrete pad will be poured of course and the stone will be laid on a bed of mortar.