In wrecking or extensively remodeling buildings over 40 feet high, fans shall be provided at each alternate story level in addition to fences and bridges required herein. Fans shall project from the side of the building not less than six feet, and shall be designed for a live load of 100 pounds per square foot for a distance of five feet out from the wall line. The lookouts or supports shall be not less than two by 12-inch joists spiked together and spaced not over eight feet on center, cantilevered on the wall and adequately anchored to beams, girders, or joists of the building with steel cables or bolts of sufficient strength to withstand the maximum load which can be applied to the fan outside of the building. The entire area of the fan shall be floored with two-inch plank laid tight and solid plank guard rails three feet in height shall be provided on the outer edge and the ends of the fan rigidly braced and secured to lookouts.
(Prior Code, § 151.07) Penalty, see § 10.999