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Truss Roof

Discussion in 'Lighting and Electrics' started by Stoldal, Jan 10, 2008.

  1. Stoldal

    Stoldal Active Member

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    In the gym i help out at, we have a steel truss roof. What is the easier/best way to hang lights on the steel beams.

    When we started doing produtions in this gym, we only had a few(1-3) light that needed to be hung on the beams, but now for this production there is alot more lights that need to be hung up there.

    Also should i be hanging lights in the beams?

    Thanks
     
  2. icewolf08

    icewolf08 CBMod CB Mods

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    This borders on a rigging question, which is not something that a lot of people on CB will touch. In order to know the best way to hang equipment in your space would really require you to have a qualified person look at your space. This may be a structural engineer or a rigger, as long as it is someone who can tell you what the beams can hold and what the proper equipment you need to mount things to the beams are.
     
  3. soundlight

    soundlight Well-Known Member

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    You need to get a qualified rigging professional to come in and assess the situation. They may be able to install beam clamps and dead-hang a pipe for your production.
     
  4. avkid

    avkid Not a New User Fight Leukemia

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  5. Stoldal

    Stoldal Active Member

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    Thanks, I will talk to my director, so that we can get one of the Admin call on of those people. The only thing that i am afraid of is the admin will not want to do any thing because we will have the theatre finished next year. And the theatre is properly rigged.
     
  6. avkid

    avkid Not a New User Fight Leukemia

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    Tell them you either need to buy a several hundred dollars worth of stands or call in a professional.
     
  7. Stoldal

    Stoldal Active Member

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    Well cost wise, how much is it going to take for a rigger to come out and look, and then how much to rig the truss roof up. I am just think is it going to be more cost effect to rent more stands and redo the light design so there is no lighting on the beams and just work with what i have for one two more productions.
     
  8. soundlight

    soundlight Well-Known Member

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    Having someone put on some beam clamps and dead-hang some schedule 40 pipe might not be too much. Have someone check it out. But make sure that they know what they're doing. Some places will do free estimates if you pay 'em for a job.
     
  9. Stoldal

    Stoldal Active Member

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    Well first i have to say thanks for the very the fast replies. ok well i will talk to my director. The production is in 5 months so we have some time, but really now that much.

    But if my director/admin says no, what would a good alt way to hang the lights?

    Thanks again for the help
     
  10. Pie4Weebl

    Pie4Weebl Well-Known Member Fight Leukemia

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    all im gonna say is beam clamps on fixtures.
     
  11. avkid

    avkid Not a New User Fight Leukemia

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    It depends on the beams, in my former high school the builders used something resembling flat truss instead of I-Beams.
    The shape and size of the interconnecting rods would make it quite difficult to find a stock clamp that would fit.
     
  12. Charc

    Charc Well-Known Member

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    It is unclear to me from reading this wether he is talking about truss, I-beams, or some sort of structural support beams sorta shaped like truss.

    If this were an established lighting position, or something designed to hold lights, that's a different story. If these are load bearing beams, as they sound to be, then you can't afford to make any assumptions. (Roof falls in during Act I, eh?)

    Get it checked out (from the sounds of your situation, probably not likely to happen), or get some more booms.
     
  13. Stoldal

    Stoldal Active Member

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    These beams now that i think about it most likely load bearing. the Shape of the beam is like a half of an I beam cut in half(kinda like "JL"). They where not built for lighting. When the gym was built the school did not think about the theatre dept.
     
  14. soundlight

    soundlight Well-Known Member

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    Those should take a beam clamp. Now that you need is someone who is certified to actually make this decision, and then have them install two sets of beam clamps, hang two schedule 40 pipes from them, then you have two electrics! See if your maintenance folks have any spare Sch. 40 laying around - it might be rusted on the outside, but nothing that a wire wheel and some simplegreen won't fix!
     
  15. Charc

    Charc Well-Known Member

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    :lol: That's 'cause it's a gym!
     
  16. highschooltech

    highschooltech Active Member

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    Interestingly enough i just did something like this with a certified rigger today. We used beam clamps and attached each fixture to its own separate beam clamp then double safetied each of the lights. It wasn't all that bad and it was way safer that hanging a new electric from my perspective.
     
  17. Stoldal

    Stoldal Active Member

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    Ya i know its a gym, and we are getting a theatre. But i still want to do these productions in the theater right, and safe!
     
  18. Stoldal

    Stoldal Active Member

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    Hmm that intresting, but i was looking the beam clamps that i saw where $70, is that normal. I am still going to have some one take a look to see what the best thing to do.
     
  19. soundlight

    soundlight Well-Known Member

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    Well, there are the large beam clamps that have jaws that grab around both sides of the beam and are designed to take the weight of loaded trusses via chainmotors, and then there are those designed to hold a much smaller load on and only grip one side of the beam on the top and bottom.
    Some of the big ones (this is what a professional might use for hanging the pipes)
    http://www.superclamp.com/default.asp?ID=4
     
  20. DarSax

    DarSax Active Member

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    You could probably just rent monkeys with flashlights on their backs to climb up there.
     

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