Rigging, Testing Instruments and Troubleshooting

VENUE: Solid Waste Management Corporation

Rigging practices on the job require knowledge of the rigging task at hand and the physics involved. Successful linework is a team sport, no one is an island unto themselves. For these reasons the various lessons about rigging and linework are delivered with a hands-on emphasis to a class divided into smaller ‘crews’. Various exercises will utilize teamwork and Socratic lecture methods to achieve demonstrable understanding. Since many of the components have a familiar look and feel highly technical concepts can be discussed without being esoteric. Learning with this engaged methodology also provides a valuable opportunity to talk about the behavioural aspects of safe rigging practices. Safe rigging practices depend on the understanding of the physics involved and an appreciation for human behavioural elements. The safest rigging device we can have is a well-educated, communicative crew of people working together.

Load Estimation, forces, and Safe rigging practices

  • Static loads, Dynamic loads
  • Rigging – estimating the forces on poles, crossarms, and hotline tools
  • Slings – angle tension, choke angles, inspection
  • Rigging forces – pole compression, line tension, guy tension
  • Conductor sag, line stringing, rigging conductor
  • Block factor, multi-part line, capstans
  • Trucks and the rigging process – jib use, derricks, using the load chart


The working forces exerted on structures, rigging components, and equipment can be extremely dangerous when rigging is done incorrectly. When rigging accidents take place structures and equipment becomes damages and people are hurt or killed. It is necessary to understand the foundational elements of safe rigging practices and to be able to utilize them form the tailboard discussion to the inspection of components and all the way through the safe completion of the job.