[SML] Question about codes

Sun Feb 14 23:49:27 UTC 2021

For a project that was going to use movers, I had a combination of moveable
rails - unistrut at every vertical - and removable deck panels with a rail
under catwalk - allowing full 360 rotation.

For a HS that has trouble affording a 60 conventionals, I don't see them
putting 10 movers on the catwalk. If you only had 4 or so, would you want
them foh or on stage for the effect? Plus its not that hard to cut the
lower rail.

On Sun, Feb 14, 2021, 5:55 PM Jeffrey Kanyuck via Stagecraft <
stagecraft at theatrical.net> wrote:

> 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> wrote:
>
> My typical catwalk - in one of a very few where structure etc. was painted
> white rather than black - better photo![image: evv catwalk.jpg]
>
> On Wed, Feb 10, 2021 at 3:09 PM Bill Conner <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> 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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> --
> Bill Conner Fellow of the ASTC
>
>
>
> --
> Bill Conner Fellow of the ASTC
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