(1) Every mobile crane, tower crane and derrick shall be thoroughly inspected by a competent, designated employee or authorized agent of the owner or lessee of such mobile crane, tower crane or derrick at intervals not exceeding one month. Such inspections shall include but not be limited to all blocks, shackles, sheaves, wire rope, connectors, the various devices on the mast or boom, hooks, controls and braking mechanisms.

(2) A written, dated and signed record of each such inspection shall be completed by the competent, designated employee or authorized agent who made the inspection on an inspection form provided by the commissioner. The most recent record of inspection of a moble crane, tower crane or derrick shall be posted inside the cab of such crane or derrick under a transparent protective covering or shall be filed in an office on the job site available for examination by the commissioner. Attached to such record of inspection shall be a written designation naming the competent employee or authorized agent. Such attached designation shall be signed by the owner or lessee of such mobile crane, tower crane or derrick.

(3) Every mobile crane, tower crane and derrick shall be inspected before being erected or operated for the first time on any job.

(4) Adjustments and repairs to mobile cranes, tower cranes and derricks shall be made only by competent, designated persons.

(5) A preventive maintenance program shall be established for each mobile crane, tower crane and derrick based on the manufacturer's recommendations. Dated and detailed records of such programs shall be available on the job site for examination by the commissioner.

(1) Every power-operated mobile crane, tower crane and derrick shall be provided with hoisting mechanism brakes capable of sustaining at rest one and one-half times the maximum rated load on a single part line. Hand or foot operated brakes shall be provided with a substantial locking device to lock any such brake in engagement. Pedals of foot-operated brakes shall be constructed so that the operators' feet cannot easily slip off. Nonslip pedal surfaces are acceptable for this purpose.

(2) Power-controlled lowering devices, when provided, shall be capable of handling rated loads and speeds in order to provide precision lowering and reduce demands on the brake loads.

(3) Electrically-driven mobile cranes, tower cranes and derricks shall be provided with devices which will automatically hold the loads in cases of power failure.

(1) Mobile cranes, tower cranes and derricks shall not be loaded beyond their rated capacities.

(2) Hoisting ropes for concrete buckets used with mobile cranes, tower cranes or derricks shall be provided with safety hooks or closed shackles.

(3) Where slings are used to hoist material of long length, spreader bars shall be used to space and keep the sling legs in proper balance.

(4) Reinforcing rods, conduit and lumber, when of uneven lengths as well as column clamps and similar items which cannot be easily secured to form safe drafts or loads shall be hoisted in boxes. Each such box shall be substantially constructed and supported from its four corners by individual lengths of wire rope having spliced or clipped loops for attachment to the load line. The construction and suspension of each such box shall be capable of holding at least four times the load for which it is intended.

(5) In steel erection, when a load is suspended from a mobile crane, tower crane or derrick at two or more points with slings, the eyes of the lifting legs of the slings shall be shackled together and this shackle or the eyes of the shackled slings shall be placed on the hook. Alternatively, the eyes of the lifting legs may be shackled directly to the hoisting block, ball or balance beam. The eyes may be placed on the lifting hook without shackles if the hook is of the safety type.

(6) No more than one load shall be suspended from the same load line of a mobile crane, tower crane or derrick at one time.

(1) Before starting to hoist with a mobile crane, tower crane or derrick the following inspection for unsafe conditions shall be made:

(2) During the hoisting operation the following conditions shall be met:

(3) The side loading of booms on mobile cranes, tower cranes and derricks shall be limited to freely suspended loads.

(4) Mobile cranes, tower cranes and derricks shall not be used for dragging loads sideways.

(5) Mobile cranes, tower cranes and derricks shall not hoist, lower, swing or travel while any person is located on the load or hook.

(6) Mobile cranes, tower cranes and derricks shall not hoist or carry any load over and above any person except as otherwise provided in this Part (rule).

(7) The operator of any mobile crane, tower crane or derrick shall not leave his position at the controls while any load is suspended nor shall any person be permitted to work or pass under a stationary suspended load.

(1) Rope safety factors.

Wire rope provided for use on any mobile crane, tower crane or derrick shall be in compliance with the safety factor requirements listed as follows:

(2) Hoisting rope.

When the hook of the hoist of any mobile crane, tower crane or derrick is resting on the ground or equivalent elevation at least two full wraps of the hoisting rope shall remain on the drum of such crane or derrick.

(3) Replacement rope.

Replacement ropes for any mobile crane, tower crane or derrick shall be at least the equivalent in strength and grade as the original ropes furnished by the manufacturer or builder of such crane or derrick.

(4) Eye splices.

Eye splices shall be made in an acceptable manner and rope thimbles shall be used in the eye.

(5) U-bolt clips.

U-bolt clips shall have the U-bolt section on the dead or short end, and the saddle on the live or long end of the rope. Spacing and number of clips shall be in accordance with manufacturer's recommendation. Clips shall be of drop-forged steel. When a newly installed rope has been in operation for at least one hour, all nuts on the clip bolts shall be re-tightened and they shall be re-checked for tightness at monthly intervals thereafter.

(6) Special fittings.

Swaged, compressed or wedge-socket fittings shall be applied as recommended by the manufacturer of the rope or fittings or by the manufacturer or builder of the mobile crane, tower crane or derrick.

(7) Rope inspection.

(1) Sheave bearings.

All sheave bearings on mobile cranes, tower cranes and derricks shall be regularly lubricated according to the recommendations of the manufacturers or builders of such cranes or derricks.

(2) Moving parts.

All moving parts of mobile cranes, tower cranes and derricks for which lubrication is specified, including ropes and chains, shall be regularly lubricated. Lubricating systems shall be frequently checked for proper delivery of the lubricant. Lubricating points shall be accessible without moving guards or other parts.