Steps:Choose a location. Select a location that's away from any combustibles such as bushes, sheds, low-hanging branches, etc.
Lay out the fire pit. Starting at the center, paint a five-foot diameter circle using a string as a compass. Tie one end of the string around the can of spray paint, then the other around a stake at the center of the pit. You'll also need to paint a three-foot diameter circle for the actual pit, and a 12-foot diameter circle for the seating area..
Dig the footer and pour concrete. With the location laid out, dig out the footer for the inner and outer walls of the fire pit, digging between the three-foot and five-foot circles, about five to six inches deep (figure A). Following the manufacturer's instructions, mix the fast-set concrete in a wheelbarrow and fill the ring with concrete (figure B). Make sure the top is level and smooth. Wait for the concrete to set up.
Separate your stones while you wait. While the concrete is setting, you can use that time to separate your stones into face stones, and a few for cap stones. The cap stones will be used to make the top of the fire pit wall, so keep the flat, smooth stones for the caps. The rest of the stones will make the wall.
Start laying stone. Start laying the stone in a ring, following the outer edge of the footing. Once the first complete ring is done, lay a ring of fire brick (on their edge, so they stand three-inches high) around the inner ring of the pit.