Jenny's right. Most manufacturers call for a drill bit sized one eighth larger than the bar size, so in your case a 3/4" or #6 bar would call for a 7/8" drill bit.
Hey folks,
We've been tasked with installing a heated topping slab for a dog kennel in an exterior area. The kennels are on top of a twelve story building in temperate San Diego (over a heated hiving area), on a post-tensioned slab (ranging from 12 1/2 to 10 1/2 inches thick, sloping to a...