[SML] FOH hang and focus safety improvement needed

[Bill Conner]

I did a 110' long "wall" - a box truss with fire place screen hanging from
it - several thousand pounds - move laterally with a hand wheel - like a
boat lift. Very easy.

Since lights are overhead, I'd be comfortable with 2' I think. I might mock
it up - like two dance barres - and see what was comfortable.

Boarding and exiting need some thought, but a ladder - ideally fixed to
wall - and a trap door could work.

I'm guessing, and feel it would come together better with drawings and
finding the "opportunities".

If this stopped 2' short of walls you could add a lighting batten along
wall. Might be a useful addition.

On Nov 28, 2017 3:00 PM, "Bill Nelson via Stagecraft" <
stagecraft at theatrical.net> wrote:

> > Chain driven? I assumed manual.  I know too little about the room to
> > understand why not on ceiling, but I'm sure there are reasons.  And a 30'
> > span is easy, and only slightly beefier than an 18' span with 6'
> > cantilevers.  The tracks could also be hung from overhead adjacent to
> > walls, and not bear on walls.
>
> Manual would certainly be preferable, as long as it is light enough to roll
> easily. It would also be safer for use by volunteers - with the added
> bonus of
> greatly reduced maintenance costs and less failure modes. The only reason I
> mentioned chain driven is that was what someone on the list suggested and I
> assumed motorizing would be necessary.
>
> I would prefer the tracks to be ceiling hung, it would greatly simply the
> mounting.
>
> It would be desirable to hang the tracks within about a foot of the walls,
> for
> easy access to the extreme ends of the light pipes.
>
> How wide would the catwalk need to be? Is 2 feet wide enough or does it
> need
> to be wider? I suspect that the width will not affect the cost very much.
>
> Can you make a very rough guess on what such a track and catwalk system
> would
> cost in the way of hardware and installation?
>
> Your help is greatly appreciated. I think I am finally getting close to
> being
> able to propose something to the BOD. It is arguably the safest of the
> various
> options I am considering. Also, volunteers that are afraid of ladders seem
> to
> be comfortable on a platform with rails.
>
> Bill
>
>
>
>
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