Low, short garden walls can be built with a single wythe—that is, with only one horizontal row of bricks. But such walls are not strong. You can even push them over by hand. Double-wythe brick walls ...

How do I replace the broken bricks? JOAN SULLIVAN, e-mail A. Good questions. The overhang is too long; a brick should overhang the step by no more than 3/4 inch. To rebuild the step without an ...