Stage Rigging Spring 2015

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.

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