cumbtech Posted August 31, 2009 Share Posted August 31, 2009 Hi I have been asked to find some information to see if our lighting rig can support two moving lights (two mover at weight: 20kg each) the rig is a series of scaff bars clamped to the rsj to form a rectangle. It has previosuly supported about about 6 lanterns a bar in combinations of 2 x source 4 juniors and a various fresnels and par cans. it was a bespoke rig put in years ago by a previous employee and we have no idea of ratings of the clamps etc What is the best place to start and how do we make load calculations etc? As you may have guessed this is not my area! Cheers Link to comment Share on other sites More sharing options...
paulears Posted August 31, 2009 Share Posted August 31, 2009 Ok - what make and type of clamps are attached to the beam? What size is the beam, just in case? What kind of clamps are used to form the scaff rectangle? The tube - is it real scaff, or just 48-52mm tube? To be fair - we can't tell you if it is capable of what you want. If somebody says yes, and it wasn't for millions of reasons, you'd be in pretty hot water. If you are uncertain, the ONLY safe way is to get experts in. We can suggest many firms who would be happy to come out to you and give you the piece of paper that the venue owners and their insurance company would need if it fell down and killed (or worse, permanently injured) someone. It's frankly impossible for any of us to say a yes or no at a distance without any real facts. If you think it is strong enough, if the powers that be agree with you, that may be enough. If they don't, then info from an internet forum sadly won't wash either.Paul Link to comment Share on other sites More sharing options...
Kaboom25 Posted August 31, 2009 Share Posted August 31, 2009 have sent you a pm... Link to comment Share on other sites More sharing options...
cumbtech Posted August 31, 2009 Author Share Posted August 31, 2009 Ok - what make and type of clamps are attached to the beam? What size is the beam, just in case? What kind of clamps are used to form the scaff rectangle? The tube - is it real scaff, or just 48-52mm tube? To be fair - we can't tell you if it is capable of what you want. If somebody says yes, and it wasn't for millions of reasons, you'd be in pretty hot water. If you are uncertain, the ONLY safe way is to get experts in. We can suggest many firms who would be happy to come out to you and give you the piece of paper that the venue owners and their insurance company would need if it fell down and killed (or worse, permanently injured) someone. It's frankly impossible for any of us to say a yes or no at a distance without any real facts. If you think it is strong enough, if the powers that be agree with you, that may be enough. If they don't, then info from an internet forum sadly won't wash either.Paul cheers I'll call in the professionals asap! Link to comment Share on other sites More sharing options...
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