I got the numbers back from the rigging contractors on this project and it's really quite expensive to include the weight of line arrays on the lift lines for the truss. The use of line arrays may represent only one or two percent of the use of the venue in a given year. As such, I want to remove (2400) lbs of the safe working load (SWL) from the truss and knock it down to just the (1500) lbs for the lighting.
Doing that gives me a few different options. We can work out something with a structural engineer to make certain we can suspend line arrays from the roof structure that does not influence the SWL of the lighting truss, or we can suspend line arrays from a Super Tower (or equivalent). I'm about to contact a couple lift distributors to talk to them about the costs of renting or purchasing Super Towers. Really, it doesn't even make a lot of sense for us to own Super Towers if we'd only use them a few times a year. I worked a concert a couple weeks ago that even carried two Super Lifts in their truck for any venues they went to that didn't have locations to rig line arrays from.
So Super Towers? Are they any good? Are there any problems that we'd run into if we wanted to suspend line arrays from them? Are there reasons groups might not want us to suspend their arrays from these?
Doing that gives me a few different options. We can work out something with a structural engineer to make certain we can suspend line arrays from the roof structure that does not influence the SWL of the lighting truss, or we can suspend line arrays from a Super Tower (or equivalent). I'm about to contact a couple lift distributors to talk to them about the costs of renting or purchasing Super Towers. Really, it doesn't even make a lot of sense for us to own Super Towers if we'd only use them a few times a year. I worked a concert a couple weeks ago that even carried two Super Lifts in their truck for any venues they went to that didn't have locations to rig line arrays from.
So Super Towers? Are they any good? Are there any problems that we'd run into if we wanted to suspend line arrays from them? Are there reasons groups might not want us to suspend their arrays from these?