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HorusLP

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    Lee Goodchild

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  1. Thanks for the replies all! Yes I will get round to sorting my profile soon, and yes I accept this isn't something I'll master simply by doing some digging, but it is something that both interests me, and having a little more knowledge of will benefit me greatly in day to day work. It's always nice to have enough of a basic understanding about something you rely on daily, although I certainly leave it to those qualified when it comes to designing and signing off a system : ) Jon - I'd be very interested to know more about calculating a worst-case to check that it's within SWL if you have any info you could point me at?
  2. Hi Jevans, thanks for the welcome and the info! Interesting stuff. I would be quite interested in figuring out the calculations required to actually know the load on each motor in a multi motor scenario. We typically use all Milos truss, I have found some info on Deflection under load etc on their website...time to do some more digging!
  3. Hi All, So recently I've decided its high time I got my head around weight loadings rather than getting other people to do it for me. I've gotten my head around basic point loads on a truss between two motor hangs and calculating the weight on each hang depending on the loads position using this formula - Hang 1 = point load(kg)*distance to hang 2(m)/span between two hangs(m). Obviously that doesn't include the weight of the motor/truss etc, but that's simple enough to work out. Built myself a little calculator template in Excel to prove it with/experiment with different loads at different points on the truss etc. My question is how do you do the same calculation for multiple hangs? I've found loads of examples online but they are all based on a uniform load, but in the real world you aren't always going to have a uniform load...you might have a few extra moving head profiles in the middle of your 6 motor straight run of truss and less on the outside, that's going to have a big impact on the weight on each hang, especially based on the examples I've seen online for UDL where the central most points take more load than the outer ones. Anyone with a bit more brains than me able to advise?
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