(iwire) - Thanks Bob!

Wow Bill you are fast.

I will point out that the two coworkers on the roof in the second picture have a harness on and are properly tied off.

We could not convince the riggers working for us that the they are also required to be tied off.

I should have sent them off the job but the customer was getting impatient to get his lanterns up.

As big as these are they still look small on the building.

Bob

Well, sometimes I can get them up quick.


These are big!
Any major problems with this job?
Did they put some extra steel up there to support these things?

Bill

Wow! :eek
The size of these make your workers look like Lilliputians.

By any chance, were these lights manufactured by a subsidiary of this company ?

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 kinda short.

Bob



[This message has been edited by iwire (edited 08-14-2003).]

Bob
Why were the fixtures bonded to building steel? I am not critisizing, just curious.
Lilliputians, electure, sometimes that is how I feel when it comes to knowing the code, very cool reference electure.

Pierre

Pierre

The bonding might have been a "field decision" by a coworker but more likely it was in the prints.

When I got to the job there was a wood curb wrapped with rubber roofing membrane, inside the curb was a 12/2 MC and a 4/0 bare waiting to be landed on the fixture.

My guess is this was part of lightning protection, the fixture was lagged to the wood curb material so the fixture would have been isolated from building steel other than the 12 AWG EGC with the MC.

Bob