(1) You must reinforce wood scaffolds with gussets on both sides of each corner.
(2) You must make sure diagonal braces are installed:
(a) On all sides of each square;
(b) Between squares on the front and back sides of the scaffold;
(c) Extending from the bottom of each square to the top of the next square.
(3) Make sure scaffolds meet all of the following:
(a) Are no more than three tiers high;
(b) Are constructed and arranged so that each square rests directly above another square;
(c) The upper tiers:
(i) Stand on a continuous row of planks laid across the next lower tier; and
(ii) Are nailed down or otherwise secured to prevent displacement.