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1.
Establish the size of the shed by laying out and cutting the treated 2x4 bottom
plates. To accurately space and mark the posts, use as patterns a 2x4 cut to
the width of the window sash plus 1/8 in., and a small section of 4x4. Drive
reference stakes along the house or garage to mark the corners and establish
the floor height. Then lay the plates on the ground to establish the
approximate perimeter.