[SML] Mount to structural beams

[nathan best]

The projector is fairly light. We've since found alternative solutions for
mounting (using a projector mount hat was previously installed by the
original buildings contractors that the new AV contractor thought was the
wrong size).

On Fri, Jan 15, 2016 at 10:12 AM, Bill Conner via Stagecraft <
stagecraft at theatrical.net> wrote:

> Just out of curiosity, is the projector significantly larger than
> lighting or a speaker you might hang in that area?  What does it
> weigh?  Not saying don't have it checked but we tend to design stages
> for some very heavy loads, and I don't usually consider a projector to
> be that heavy.
>
> We require contractors to provide engineering drawings of their gear -
> through the attachment and to show the loads or forces on the
> building's structural framing.  It's not reasonable or even usual for
> a contractor - like a rigging contractor - to reverse engineer the
> building.  If there are not documents that  detail what the building
> was designed for, calculating that or calculating that the load to be
> added is OK may be well beyond a rigging - or av - contractors or
> their engineer's  expertise. Yes, you can require the a/v contractor
> to have a structural engineer investigate the building but it may not
> be the one they use for their gear and likely not in their contract
> unless that was very clearly stated in the documents. If the original
> engineer who designed this framing - and that's likely to be two - one
> for the twg and one for the building - they would be able to do this
> most efficiently.
>
> --
> Bill Conner Fellow of the ASTC
>
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