Cut two 2-1/2-inch blocks from the 1x3x3-ft board. Cut two 15-inch pieces from the 1x3x3-ft board. Cut four six-inch dowels and one nine-inch dowel. Sand each piece with 220 grit sandpaper ...

Historically, 3/4 inch x 14 inch and 1 inch x 16 inch smooth round dowels spaced at 12 inches on center have been used in construction joints for 5- to 6-inch and 7- to 8-inch-thick slabs (Ref.