jonathanmdavis
Member
Hi everyone,
I have a question regarding the rigging of lighting truss where I work as the production/technical director. We have two sticks of 8 ft light weight truss in our auditorium each with four LED PARs weighing about 7 lbs each. Counting cable weight and the weight of the truss itself, I would estimate it in the neighborhood of 100 lbs total. I know this is relatively light weight, but the way in which it's rigged to the beams in the attic worries me a bit. The wire rope is threaded through woodscrew style eyebolts, which are then screwed into the beams. From the images, the bolts look like about 3/16", but I can check on that to make sure, if that's helpful. Some of them are vertical, as you can see in the pictures I linked:
https://drive.google.com/drive/folders/10C2ReUPHBYTlXybgesmXI9eJ8tTCBPof?usp=sharing
This was done at least eight years ago - before I worked here. Intuitively, I would think that using wood screw style eyebolts would not be the safe way to go, and that it should be either something that wraps around the beams, or uses some sort of strut. However, I don't have enough specific knowledge to know that for sure, so I wanted to see if I'm just worried about nothing at the relatively low weight that is hung, or if it's a legitimate safety concern. I can certainly provide any more info or images that are helpful.
Thank you!
I have a question regarding the rigging of lighting truss where I work as the production/technical director. We have two sticks of 8 ft light weight truss in our auditorium each with four LED PARs weighing about 7 lbs each. Counting cable weight and the weight of the truss itself, I would estimate it in the neighborhood of 100 lbs total. I know this is relatively light weight, but the way in which it's rigged to the beams in the attic worries me a bit. The wire rope is threaded through woodscrew style eyebolts, which are then screwed into the beams. From the images, the bolts look like about 3/16", but I can check on that to make sure, if that's helpful. Some of them are vertical, as you can see in the pictures I linked:
https://drive.google.com/drive/folders/10C2ReUPHBYTlXybgesmXI9eJ8tTCBPof?usp=sharing
This was done at least eight years ago - before I worked here. Intuitively, I would think that using wood screw style eyebolts would not be the safe way to go, and that it should be either something that wraps around the beams, or uses some sort of strut. However, I don't have enough specific knowledge to know that for sure, so I wanted to see if I'm just worried about nothing at the relatively low weight that is hung, or if it's a legitimate safety concern. I can certainly provide any more info or images that are helpful.
Thank you!