Future Stage Rigging Truss Loading

[sam37]

Have a stage rigging loads question regarding a new high school gym project I am working on with a stage area. The roof framing over this wood framed gym will be wood trusses spanning 80' designed by a truss manufacturer. The client would like to have the ability to secure rigging to the bottom chord of the trusses above the stage if they choose to do so in the future. We need to give the truss manufacturer an additional load to design for, what the stage rigging will be is unknown and may not be going in for a while. I couldn't find any typical code loading for this situation and don't even have a ballpark figure in mind to give the truss manufacturer. Any idea of what a typical design loading would be for a 40'-0" x 20'-0" high school stage rigging will be?

 

[rowingengineer]

This is very hard to define without an idea of use, here is a guide to help provide some ball park ideas.

Https://www.google.com/url?sa=t&sou...FjAWegQIGBAB&usg=AOvVaw2G9Cd1TmZiGJAzFcuuEvfB

 

[EdStainless]

The term for stage rigging is usually 'fly'. Typically you would suspend a set of trusses and then hang your stage loads (lights, curtains, backdrops, sets, ...) from them.

https://www.google.com/search?q=sta...j0i10i22i30.8198j0j7&sourceid=chrome&ie=UTF-8

https://www.google.com/search?ei=g6...CSAQCYAQCqAQdnd3Mtd2l6yAEIwAEB&sclient=psy-ab

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P.E. Metallurgy, consulting work welcomed

 

[JLNJ]

Last time I did stage rigging I was able to get the rigging loads from a couple of prospective groups which the Event Center was courting and make (and document) some conservative assumptions from there.

You might be able to then back out some distributed loads to apply to joist panel points.