[island911]

Well, form my egr perspective, simply telling someone, who's never done this before, to "put rebar in it" does them no good. ...it just complicates the matter. ...if crack avoidance is a big concern, saying ""put rebar in it" misses the week spots. (interface with existing)

And then, there's the whole Q of what will a length of #4 rebar, laid down the center, really going to do for such a thin section? Sure, if it cracks, the cracks will stay thin, but I don't see the rebar as providing much tensile stiffness (due to the short cross-section/neutral axis) ...a tube of wire mesh would be much better.

Furthermore, since he (or the city) might decide that the newbie first pour/finish is less than desirable, leaving the rebar OUT will make an easier job of jack-hammering it out.

Randy, maybe consider sections of 'curb stone' ...since you will be putting pavers up against it anyway. ...granite curb-stone might be cool. (most rock places have it)