epimetheus
Well-Known Member
Ok, I need some advice from you CB experts. My church is undergoing a major building program and as a part of it we're getting a new pre-school worship room. For whatever reason the design and installation of the AV systems for this room were not included in the AVL contractors scope. As such, the church technical ministry is handling the design and installation internally. I'm a volunteer in the technical ministry and happen to enjoy this sort of thing, so of course I've been heavily involved in both the design and the installation.
We're hanging Renkus-Heinz CFX121 speakers on either side of the stage. The speakers have M10 rigging points built in. The building contractor provided a single piece of unistrut on each side of the room to hang the speakers from. I added to this 3 more pieces on each side to make a grid to give us the appropriate mounting points. Now the unistrut is properly installed with all the appropriate hardware (strut nuts, flat washers, lock washers, etc.). The problem is attached the speakers to the unistrut. Paying attention to all the recent threads we've had here about overhead rigging, I went with forged M10 eye-bolts, stamped 5/16" quicklinks, and 1/4" grade 30 proof coil chain. We did the install and everything went great.
Now the problem. I'm not sure who, but somebody decided that the chain wasn't as visually pleasing as desired. Those who make the decisions (not me) decided that GAC would be used instead. Now I haven't seen how the GAC was installed, but I don't think thimbles were used and I believe that all the hardware came from a big box store. I think the GAC is 1/8", uncoated.
Is this change a problem that I should make a stand against? I'm just a volunteer here and I'm not getting paid. However, I am a Professional Engineer and I want to be very careful about any liability that might come back to me.
Your thoughts?
We're hanging Renkus-Heinz CFX121 speakers on either side of the stage. The speakers have M10 rigging points built in. The building contractor provided a single piece of unistrut on each side of the room to hang the speakers from. I added to this 3 more pieces on each side to make a grid to give us the appropriate mounting points. Now the unistrut is properly installed with all the appropriate hardware (strut nuts, flat washers, lock washers, etc.). The problem is attached the speakers to the unistrut. Paying attention to all the recent threads we've had here about overhead rigging, I went with forged M10 eye-bolts, stamped 5/16" quicklinks, and 1/4" grade 30 proof coil chain. We did the install and everything went great.
Now the problem. I'm not sure who, but somebody decided that the chain wasn't as visually pleasing as desired. Those who make the decisions (not me) decided that GAC would be used instead. Now I haven't seen how the GAC was installed, but I don't think thimbles were used and I believe that all the hardware came from a big box store. I think the GAC is 1/8", uncoated.
Is this change a problem that I should make a stand against? I'm just a volunteer here and I'm not getting paid. However, I am a Professional Engineer and I want to be very careful about any liability that might come back to me.
Your thoughts?