The assembly and disassembly of an amusement device, temporary structure, viewing stand or tent shall be done by or under the immediate supervision of a person experienced and instructed in the proper performance of such work in respect to the device, structure, viewing stand or tent.

Assembly work shall be performed in a proper and workmanlike manner. Parts shall be properly aligned, and shall not be bent, distorted, cut or otherwise injured to force a fit. Parts requiring lubrication shall be lubricated in course of assembly. Fastening and locking devices, such as bolts, cap screws, cotter pins, lock washers, etc., shall be installed where required. Nuts shall be drawn tight, cotter pins shall be spread and lock nuts firmly set.

Parts which are excessively worn or which have been materially damaged shall not be used. Close visual inspection of parts shall be made during assembly to discover such wear or damage and immediate inspection of fastening devices shall be made after assembly to assure that they have been properly installed.

Persons engaged in the assembly or disassembly of amusement devices, temporary structures, viewing stands or tents shall be provided with and shall use tools of proper size and design to enable the work to be done safely. Broken, damaged, and unsuitable tools shall not be used. Electrically operated tools shall be grounded during use.

Assembly and disassembly of amusement devices, temporary structures, viewing stands and tents shall be done under light conditions sufficient to permit the work to be properly performed and inspected.

A sufficient number of persons to do the work properly shall be engaged for the assembly or disassembly of amusement devices, temporary structures, viewing stands and tents. Persons not so engaged shall be prevented from entering the area in which the work may create a hazard.