[SML] Question about codes

[Jeffrey Kanyuck]

OK, for design of a catwalk system: what do you do for intelligent fixtures that are anywhere from 27" to 32" tall? We are looking for having around 10 in our FOH cats.
I'd prefer not to hang them straight out from the rail.
Jeff Kanyuck


On Wed, Feb 10, 2021 at 3:18 PM Bill Conner via Stagecraft <stagecraft at theatrical.net<mailto:stagecraft at theatrical.net>> wrote:
My typical catwalk - in one of a very few where structure etc. was painted white rather than black - better photo![evv catwalk.jpg]

On Wed, Feb 10, 2021 at 3:09 PM Bill Conner <billconnerastc at gmail.com<mailto:billconnerastc at gmail.com>> wrote:
The IBC and LSC which are most widely used in the US permit non-standard rail spacing on lighting catwalks (and a few other places for entertainment technology).  My standard is for 22" clear between top of toe board and bottom of lower rail, and 22" between top of lower rail and bottom of upper rail.  (I used to do 30" when 8" ERSs were more common.)  This may not be enough to satisfy OSHA requirements for fall protection.

I believe it's very important to not require people to lean out to focus and service the gear.  It's much safer if both feet are flat and your body balanced over the catwalk deck.

I attach a page from a presentation I did at TEAC 2010 that shows a design that does provide fall protection, and sounds like what someone had in mind but didn't really know what they were doing would not work well.

On Wed, Feb 10, 2021 at 1:58 PM Ross via Stagecraft <stagecraft at theatrical.net<mailto:stagecraft at theatrical.net>> wrote:
Here is a question for those of you who have renovated or built new theatre spaces.  The local school district has just built a new high school with a state of the art theatre space.  In touring the space I see that somewhere along the lines someone put chain link fence along the catwalk railing.  Is that a safety feature that being included in new construction or just some random bright idea?  I would try to look up the building codes but I am not sure where to look, (that and trying to read them make my eyes glaze over).

The reason I am asking because when adjusting light on Cat #2 you have to lay on the floor & stick one are under the fence to adjust said light, OR one person grabs the belt of a second person as they lean over the railing, (& pray they say in their pants).

I should point out that at this time I do not have a formal contract with the school for anything. I just help out on productions as asked.  That is the reason I do not ask any of the construction guys finishing up the project.


Clay Ross
Pro Dreamer

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