Bill, The company I work for did the original building and we had the fixtures built to a detailed set of prints.
My involvement started after the building was open for a while, I did not see the steel work, I assume (oh no) that the roof was beefed up in that area.
When I arrived there where curbs installed on the roof like you would have for a RTU.
If you look at picture one you can see the crane lifting the upper section up and you can see the square tubing within a square tube that the fixture is made from, the base section was made from 10" x 2" x 3/8" C Channel, allot of it.
The decorative parts where also heavy gauge stock, who ever designed it wanted it to last.
Each fixture is bonded to building steel with 4/0 copper.
The fixtures inside where Crouse Hinds industrial fixtures, not explosion proof but close to it in construction.
When these showed up in our warehouse they were in creates, I thought the warehouse staff was joking when they told me these where the fixtures we had to install on a roof.
ThinkGood, I do not know if the fixtures where made by the "Big A** Fixture Co" but I liked your link.
electure, One of the guys is
[This message has been edited by iwire (edited 08-14-2003).]