Rigging Truss Advice requested
Posted 29 September 2005 - 06:26 PM
I am lighting a show and wanting to add a FOH truss. The theatre has the flying points and motors already installed. Other than obviously hiring the truss, is there anything else I need? For example, how do I attach safety's and where to etc. Also, what piece of kit do I need to actually attach the truss to the hoists?
Posted 29 September 2005 - 06:32 PM
The piece of kit you need is someone who knows what they are doing. From this person you can start to learn the rigging trade. Sorry to be so blunt but you cannot just go for it in this case!
Posted 29 September 2005 - 07:11 PM
I do this sort of stuff for a living. I get very fed up with people thinking that rigging etc is just a way of taking money away from other departments or that it can be done by anyone able to tie a knot. If you do not know the kit you will need, then you categorically should not be doing it. At any point. Full stop.
As a way of backing that up, if you do a sight visit in the near future and have a look through the holes in the floor/ceiling below the motors and you can see probably 3/4 rows of seats. These would contain all of the mussy squished people if something went wrong.
Sobering isn't it!!!
If you want to discuss proper rigging services (labour and equipment), pm me.
Posted 29 September 2005 - 07:15 PM
As Andrew has said get a rigger or someone with the appropiate knowledge in. Also a good starting place to learn about flying trusses and other useful rigging techniques is Chris Higgs's first book
(Didn't realise it was on amazon till I googled for it!). Very worthwhile and worth every penny!
Edit (Amazon link added, The Blue Room gets a cut if you buy though the link. Andrew C)
This post has been edited by Andrew C: 29 September 2005 - 07:32 PM
Posted 02 October 2005 - 05:51 PM
as Chris would no doubt agree, his book which is very good does not make you competent to do it all! It is a very good way of learning loads and loads. Still need to spend time with people in the field doing it, once or as the book is read.
Posted 02 October 2005 - 06:19 PM
Posted 02 October 2005 - 06:28 PM
This is going to come as a very random question something I should know, but having been spoilt with the likes of Vertigo I have never needed to know....
People say unlike chain hoists the motor is not needed at a large height, so my question to you all is how is the motor/chain rigged at such height then???
Sorry for the stupid question.....
Posted 02 October 2005 - 06:48 PM
Hi Bright Spark,
is the question how or why the motor is rigged in the roof as opposed to the truss?
If it is why, then the answer is because the motors sound like a permanent install at the venue described. So to save there tech's having to un flightcase some motor's, pull the chain upto the point, run power/control cables to the motors, run the motor through to working height, sling the truss, and then begin to load the truss with whatever there placing on it, they can simply lower the chains for the motors from the grid and sling the truss, lots less mucking around!
If the question was how, then it's simply inverted from the way that you describe (Motor at truss "climbing" chain), so the motor has physically been lifted to the grid/point, and is hung directly onto the point in the roof, and then the chain is simply lowered (In this case sounds like through a hole in the ceiling for neatness).
Posted 02 October 2005 - 06:59 PM
Most places with fixed motors will be either just that; fixed. In some cases they may be on trolleys mounted on RSJs so they can pick-up from several points.
Posted 02 October 2005 - 10:28 PM
on a little note, be very careful when using th eterm "inverted". When talking about a Lodestar, "inverted" means body down. they were originally designed to be on beams or trolleys in workshops etc with the hook going up and down. The black bodied versions we see all over the place are an entertainments variant designed to meet the needs of the industry. A good decider is body up or body down. saves confusion!!!
If you are going to get the venue to supply/advise the kit beyond the hook then I would say that they should do the rigging of it and the safetying etc. It is very hard to be in a safe and knowledgeable position (legality too) if so many people are involved. If you don't know how to do it therefore you don't know how to spec it, then get a person (in venue or not) to spec it and do it. Watch them and learn something. A lot of venues too would turn around and say "shall we supply and rig it for a charge, or do you want to supply it and be responsible for it?"
Posted 03 October 2005 - 09:20 AM
Thanks for the advice, I did know that inverted mean't body down, I was trying to explain in laymans terms to the poster and as we we're talking about the opposite to how he had seen motors (body down) then inverted seemed like a sensible word!
Anyway, as you rightly say, Body up/down sounds like a much better terminology to use.
Posted 03 October 2005 - 12:25 PM