I have used PVC pipe cut to length and then cut a V notch it it on a table saw for the rebar to sit in, or you can buy the premade wire chairs from Lowes or Home depot. The are @$.010 each out here, then I wire them to the rebar and no worries about it falling off or the rebar landing on the ground when pouring.
But what ever you use, keep it away from the intersections of the rebar and don't for get to overlap the ends of the rebar @12" when you have to join them on long runs. Tie them with wire in 3 places.
"Axeheads are supposed to be sharp, but you are one blunt tool."
If you love wealth more than liberty,the tranquility of servitude more than the animating contest of freedom, go home from us in peace. We seek not your counsel nor your arms. Crouch down and lick the hand that feeds you. May your chains sit lightly on your shoulders and may posterity forget that you were our countrymen.
A government big enough to give you everything you want is big enough to take everything you have.
Calling Illegal Aliens "Undocumented Immigrants" is like calling drug dealers "Unlicensed Pharmacists"
Nemo Me Impune Lacessit
"No one provokes (attacks) me with impunity".
"Your right, the Tea Party and the OWS are the same, just like the America Revolution and the French Revolution were the same. The only problem is the American Revolution ended with Liberty, Freedom, Justice for all and a shining light upon a hill. The French Revolution ended with lynchings, guillotines, murder and socialism. So yeah, I could see how one could confuse the two..."