I'm installing a PTZ camera on a ceiling. The unit weighs a bit less than a kg.
The documentation claims:
When installing the unit in a high location, be sure that the location and installation components (excluding the supplied accessories) are strong enough to withstand at least 60 kg of weight, and install the unit securely. If the components are not strong enough, the unit may fall and cause serious injury.
I can't see from where the *60* kg requirement derives.
That's in case the kids decide to swing from it.
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Perhaps they're just tired of dealing with the results of people being incapable of judging what's strong enough. While excessive for this purpose, 60kg is not difficult to achieve on most ceilings, and obviates the use of plastic hooks, string and sticky tape.
Sylvia.
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I read that as worrying about failure of the *support*. "As if" the camera presented a 60Kg load (which it clearly doesn't) that could cause the supporting member to fail (or the attachment mechanism).
My packaging engineer says "walls and ceilings are special". I'm guessing fear of the installed item coming crashing down, "unexpectedly", and injuring someone. But, he didn't elaborate -- teasing a steak dinner out of me to "discuss it". (his momma dint raise no fools!)
In the time since, I've noticed other ekit items that have similarly "extreme" support requirements; one and two pound items requiring supports that can handle 50 pound loads. And, recall installing some (sealed, heavy) loudspeaker units that required a "safety cable" secured to a building member as extra protection against falling from their mount (earthquakes??).
I guess that's why we have packaging engineers -- to be aware of all of these issues so we don't have to! (but, I will take the opportunity to discuss each of my designs with him lest there is something that might prove difficult to address, later.)
Yes. War story: When I was in High School in the late 1960s, we were going to have a party or the like in the Gymnasium, which had a very high ceiling, as is usual. I was installing a ellipsoidal spotlight (borrowed from the auditorium lighting system) on a bit of iron pipe lashed to the steel trusses holding the roof up. The assembly and installation was done from a platform assembled for the purpose - no ladders were involved.
The spotlight weighed maybe 20 pounds, and would kill someone if it fell. So I did worry about that pipe - would those galvanized steel ties really hold that pipe up, no fooling.
I had my well-muscled 180# assistant chin on that bar. The bar didn't budge. This test also satisfied the school administration.
Joe Gwinn
And the lamp was secured to the pipe with a safety "chain" in case the yoke bolt came loose.
Of course, doesn't protect against some newbie loosening the side-tension knobs too much and the lamp falling out of the yoke (hoping the electrical connection will deter its falling).
Or, loosening the lens assembly.
Or a gel/filter slipping out of its holder.
Or...
gotta wonder what sort of person would be willing to ACT under a collection of such luminaires!
Well, until the capacitors in the speed control box degrade. Mine got to the point where the choices were exceedingly slow, very slow, or gale-force. Of course, a trip to the electronics store fixed that, but not an option for most people.
Oh, yes, and it is mounted on a crossbeam that is attached to the joists by large steel brackets and substantial screws. It's not going anywhere.
Sylvia.
Is this thing made in or sold in Europe? The various building codes put requirements on the dead loads and live loads the structural ceiling is required to support. They're specified in pounds per square foot in U.S. - there are always exceptions and additional requirements you would have to check the residential code of the IRC to verify. So forget that. The majority of that 60kg pertains to the weight the ceiling is rated for to hold itself up. They don't want you hanging if off something flimsy like a suspended ceiling, drywall, or some cheap ass 2x2s you can effortlessly break over your knee. Use 150 lb *pullout* fasteners, which are pretty small, cheap and readily available, and attach them to *good* framing.
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