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Concert Sound and Lighting Systems, 3rd Edition by John Vasey

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CHAPTER 3

RIGGING

Rigging is a specialized field that requires a great deal of practical and theoretical knowledge. A qualified rigger is legally required in most parts of the world to rig the points for attachment of the chain motors.

RIGGING OF POINTS  image

To rig the points in suitable positions, the rigger must first know how to make up bridles on the ground. For example, in a venue with rigging beams 15 feet apart and 60 feet above the floor and a stage 6 feet high, at least 30 feet of clearance is required between the stage and the motor hook. Under these conditions, the point must be at least 36 feet above the ground, which is 24 feet below ...

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