Stage Rigging Spring 2015 Toggle navigation

2/20/15 class notes

Hemp House Rigging- fundamental basis for modern day rigging systems. Spot line rigging is when you fly something specific for a show that doesn't use the theaters rigging system such as a chandelier. Different kind of ropes: natural fiber- limiting factor is determined by how strong each fiber is and how long the fibers are. Different types of natural fiber rope are: Hemp, Sisal, and Manila synthetic- limiting factor is how strong the raw material is. Diffetent types of synthetic rope are: Nylon, Polyester, and Polypropylene. Rope Construction: Twisted- individual fibers are twisted to make a thread. Threads are twisted to make a strand. Strands are twisted to make a rope. Parallel Core- inside is not twisted. Outside is a jacket to hold the core together. All the strength is in the core. Braided- double braided- core and sheath are both braided. Knots reduce strength of rope by 50% Inspecting rope: visual- every time rope is used, make sure there is no visual discoloration or deformation in the rope. annual in depth inspection- feel along the entire length of the rope for any deformations.   Hemp line set loading procedure. 1-lower the batten to working height. 2- attach load. 3- overload batten out. 4- attach sandbags and test weight. 5- level batten 6- set trim height Hemp line set unloading procedure: 1- remove sandbags 2-lower batten to working height 3- remove load.