A top-down graphic of a grid pattern formed by steel rebar, with a central square made of double bars and single bars forming a finer grid inside.

Create a top down graphic of two #5 rebar, 6" apart, that form a square bisected into quadrants. The bisecting pieces are 3" from center line of the square in both x and y directions and at 90 degree angles to the square. Extend these lines outside the square by several inches. After that, place one #5 rebar to divide each of the remaining subsections of the square to form an equally spaced grid of the remaining space. Make sure the square and the x and y bisectors are both double pieces of rebar, 6" apart, and do not label the diagram with any numbers. See more