NOTE: All members except planking are used on edge. Maximum vertical spacing of horizontal members Note: Platform units used to make scaffold platforms intended for light-duty use shall be capable of supporting at least 25 pounds per square foot applied uniformly over the entire unit-span area, or a 250-pound point load placed on the unit at the center of the span, whichever load produces the greater shear force. 250 pounds placed at the center of the span and 250 pounds placed 18 inches to the left and right of the center of the span (total 750 pounds).250 pounds placed 18 inches to the left and right of the center of the span (total 500 pounds).250 pounds placed at the center of the span (total 250 pounds). ![]()
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