Section 5.41. Demolition of steel construction

(a) Where floor arches have been removed, the entire tier of beams on which any derrick is supported shall be completely planked over, except for openings required for handling material or equipment.

(b) In the operation of cranes and derricks, a standard signal system shall be used and all men assigned to the operation of such equipment shall be fully instructed on such signals.

(c) A tagline or guide rope shall be used on all hoisted or lowered loads.

(d) The riding of the load line in any lifting device is strictly prohibited.

(e) Wherever acetylene or oxygen cylinders are transported or lifted by crane or derrick, such cylinders shall be placed in substantial stands or cradles.

(f) A beam may not be cut until precautions have been taken to prevent it from swinging freely and possibly striking a workman, piece of equipment or part of the structure being demolished.

(g) Structural steel shall be lowered from the building and never allowed to drop, except where buildings being demolished are not adjacent to other buildings or thoroughfares, in which case materials may be dropped, if a sufficient number of employes are assigned to keep the public and other workmen from entering the danger area.

(h) When a structural steel frame is demolished without a derrick, the entire tier of beams next below that from which the beams and columns are being removed shall be completely planked over. This does not apply to floors from which arches have not been removed nor to openings for the passage of material or equipment.