Dodgecaliber Posted March 22, 2009 Posted March 22, 2009 Hi all, I've got a truss going into a venue in a couple of weeks (Prolyte box truss if your intrested) However the space in the venue is limited therefore I need to find a way of supporting the truss on its own. In the past experience, I have created outriggers with scaff tubes and stageweights, however this will be a pain for performers. It's a listed building, so I can't bolt the baseplates into the floor, or rig anthing from above. My only options that I can think of are to strap it against a nearby rail at the rear of the stage(1.1m tall) or create outriggers Any suggestions?
Happy Jack Posted March 22, 2009 Posted March 22, 2009 Perhaps you would consider buying some sheets of 18mm MDF ply, cutting some 90cm by 90cm squares, double them up, glue / screw together, paint with some matt black paint, pop in some t nuts, bolt the baseplates to that then add ballast. You may also consider sticking some rubber matting underneath it all to protect the flooring. Has always worked well for us.
Jerome Posted March 23, 2009 Posted March 23, 2009 In the past experience, I have created outriggers with scaff tubes and stageweights, however this will be a pain for performers. What might be more of a pain for the performers is when the truss moves because you have no stable bracing. When dealing with any performer you have to make everything idiot proof, what happens if they knock one of the uprights? Oops doesn't cover it I feel. What exactly are you using the truss for? How much is going on it? There has to be a comprimise with situations like this. Either you say to the performers 'deal with it' or you find alternative SAFE solutions. Happy Jack may have found an answer but what he failed to also say in his reply was that you would then have to have stage weights on the MDF sheets . Given, the surface area the truss will stand on will be bigger and safer , but then is it as safe as outriggers... answer- no.
Colin Posted March 23, 2009 Posted March 23, 2009 Not sure if this will help in your situation but a couple of times when doing free standing truss screens etc I have used T pieces with a 1m bit of truss frount and back on each side. Seemed quite stable for that but I couldn't tell you how to work out any loading potentials on the T piece
Happy Jack Posted March 23, 2009 Posted March 23, 2009 A valid point made by Jerome. Don't compromise on safety just because it is an 'inconvenience'. Stage weights do not have to be used, I thought the term 'ballast' covered it... If you can afford to hire in, perhaps an Alptek Lift from Mobiltech or something similar, as long as it is within the SWL. Of course, these are all suggestions based on knowing nothing about the load or span of the goalpost... ?
Dodgecaliber Posted March 23, 2009 Author Posted March 23, 2009 Hi all, should have stated the sizes earlier! It's 3m tall, 6m wide. I've done my calcs and im looking at loading around 80 - 100kg onto it. Im happy enough to strap it to the railing, stageweights and outriggers, It's just unfortunate that there is no space to make it 3D which would eliminate any issues! The stage itself is only 4m deep and 7m wide so there isn't a lot of room!
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