Nailing The Outside Uprights, Sill,
Ledger & Ribbon Boards
6.Place the outside
sill on the ground. The minimum
distance between outside and inside sill is 20 inches (508 mm). A 2 by
10 inch (51 mm
by 254 mm) four board scaffold would be 40 inches (1016 mm) wide
between uprights.
7.Set up and nail the two end outside uprights on the outside sill.
8.Nail the levelled ledger boards to the outside uprights.