When you buy a metal gazebo roof replacement, you have to attach it to the ground to keep flying away or fall on someone in heavy winds. You can anchor it to the ground through pre-cut holes at the bottom of each leg if you put it on a cement or stone patio.
Place the gazebo on concrete patio where you want it to go. Place the level on each leg and make sure it is vertical. Draw a mark in the concrete through each cut hole at the base of each leg. Move the metal gazebo roof replacement to the side of a foot so you can get to any mark on the concrete without the gazebo in the way. Measure the length of the drop-in anchor and place a piece of tape on the drill bit equal distance from the end of the bit. Drill straight down on each pencil marker until you reach the band a little. Clean the area around the holes with the brush.
Drop in an anchor and tap it until it is level with that concrete. Place the setting tool inside the anchor and hit the top edge of the tool with the hammer four or five times. Tighten the tool firmly to make sure the anchor is properly seated. Repeat this for all holes you have drilled. Place the metal gazebo roof replacement so that pre-cut holes on the legs are over the anchors. Place a washer on a 1/2-inch bolt and screw it in, through the pre-cut hole in the leg, into the anchor. Repeat this step on all legs. Pull each bolt with latch and half-inch socket.