Cottage is on Canadian shield (igneous rock) and unfortunately slopes off where deck footings are being installed. The deck will be secured only to a corner of the cottage and the two furthest footings will be on that sloped rock.
Chiseled squares out of sloped rock using a borrowed Hilti to obtain some flatness. Then drilled four 5 inch holes (16 inches apart) to secure 1/2 inch Rebar with epoxy. Rebar extends out of the rock about 12 inches. Bent all four overlapping & tying the ends together in the center with wire. The bent rebar rests about 4 inches above the rock. Added an additional four 5 inch holes nearer to the center and secured smaller pieces of rebar standing straight up about 4 inches above the rock. Then (in one pour) added a 20"x20" square footing 5 inches thick and another smaller 18"x18" pier (?) 4 inches thick on top.
So i think i have lots of secured rebar but similar to a previous question - there is not much out there on how to. With the one pour does the rebar need to be higher within the concrete?