For the purpose of the Washington state public works law, chapter 39.12 RCW, stage rigging mechanics perform nonpermanent mechanical and operational stage rigging work for theatrical performances and productions (regardless of the size of the production), and is work requiring the use of manual hydraulic systems, pneumatic systems, motor systems, electro-mechanic and stage rigging systems and methods for controlling and linking these.

The work includes, but is not limited to:

• Assembling, working with, or disassembling cables, pulleys, tackle, winches, automated scenery, or other gear associated with the lifting or supporting of objects above the floor.

• Installing, maintaining and dismantling the physical means of support for the overhead equipment related to the stage production. Set motor power and truss attachment gear.

• Maintaining suspended stage equipment.

Work performed under this scope does not include: Any work processes as described above which are necessary as part of a public works construction project for new construction, improvement, alteration or repair to maintain structural integrity to an existing system or theatrical facility.