Mike Wright

When I create a bridle (simple 2 leg to a structural member in this case) the auto select tool picks the correct objects as below: But when the bridle builds it is at the wrong height: Am I doing something wrong? VX2019 SP3.1 Windows 10

I have had the same when resetting the IDs with nothing selected, It seems to try to set an ID for every object in the drawing

You are correct that you need to use the ATT symbols, they come in various length but be aware that the stock symbols often have incorrect/incomplete truss records. I have modified mine for S52, 40V and 30V ATT along with building my own symbols for CCS6 female couplers in set's of 4. Frustrating but has proved worthwhile as no-one seems to want simple truss structures!

Does anyone from vectorworks monitor this forum? Unless I am missing something there is very little training/support documentation available for braceworks and I don't always have time to pester VSS support.

I was hoping to get more response to this! Never mind. I'm pleased to report that Braceworks reports compared extremely closely to real world readings from load cells on the 4 points to the roof and measurements of deflection on the circular truss.

I've a relatively complex rig where I'm very close to my loading limits for the roof. One of the key elements of the rig is a large circular LED screen suspended from a circular truss. Currently I have the screen modelled as a series of point loads, one for every pick up on the screen header bars. My though is that this in no way reflects how a screen actually behaves as it is an inherently rigid structure attached to one which deforms under load. Could I produce a custom 'truss' which replicates the screen header bar but has a rigid cross section and the same weight/m as the screen itself. This could then be 'attached' to the circular truss using multiple pliable truss cross points to give a more accurate transfer of forces (the screen header will be rigged using round slings from the truss) Any thought would be gratefully received

I am unable to get the viewport from clip cube to work. I have 'display with clip cube' ticked when I create the viewport but it always appears on the sheet layer without. I'm sure I am doing nothing wrong VW2019 SP3.1, Windows 10

you have the 'simplified' class visible for your truss. Hide this class in the viewport proprieties and your truss detail will return

*similar disclaimer* I am also not an engineer Here is a demonstration of my theory. On the left is a truss object created to be the same weight and dimensions as a theoretical screen . It has a rigid cross section because as near as damn it that is how an LED screen behaves. This is coupled to the truss using a truss link with a rigid cross section (mimicking say a half coupler*). All but the end two links are in compression and have failed. In reality this would prevent the truss from deflecting as expected unless you were using a pliable method of supporting the screen (spanset etc). On the right is a distributed load of the same weight showing the correct deflection of the truss. So in theory: If I use a rigid connection between header bar and supporting truss, I prevent the truss from deflecting. Which braceworks cannot model. If I use a soft connection between header bar and supporting truss the load will be almost exclusively applied at the outer most connections where the deflection of the truss and the screen are equal. Now in answer to my own original question: I have spaced my mother grid and the hoists that support the circular truss to minimise the variance in deflection around the circumference. I have achieved this without the need to apply any chain shortening as without load cells this will be wildly inaccurate in practice. This means that in theory none of the supports between screen header and circular truss should be wildly in compression (the screen here is modelled as a distributed load applied direct to the circular truss) : There are factors like for instance adding additional hoists which can cause this deflection to vary massively and in this case chain shortening is the only option to restore the desired flat support truss: My conclusion has been that to most accurately match theory to practice, my truss deflection must be as uniform as possible under FEA like Braceworks. Excuse the lengthy rambling post but (especially given recent events) I am taking a personal (and have been asked to take a corporate) interest in the rigging of LED screens and am interested in peoples opinions. I'm happy to have holes picked in any of the above or to be proven completely wrong! *Pro Burger for those on the other side of the pond

I have been struggling to import a DWG model into VWX. this the result of an import into VWX2019: And this is the same model imported into VWX2018: There is a lot of detail missing from the 2019 import but I haven't changed any settings away from my normal import process PC system

solved - for some reason it had been set to convert all objects to 2D

Thanks I've worked out that clip cube only works with OpenGL and RW rendering and also appears without the clip cube until it's rendered

When I convert my trusses to lighting positions they no longer appear in my truss count worksheets. Am I doing something wrong?

Brilliant! That menu has always evaded me. It's not very obvious. Thanks

Thanks Is there a way of adjusting this property once a worksheet is generated?

I have been in touch with tech support and they have provided me with links direct to the installers for for Vectorworks Updater, once installed this works fine for SP3 although I had to insert the license number myself Mac http://release.vectorworks.net/nnapub/updaters/24/NNA/eng/app/Vectorworks 2019 Updater-24.0.477321-mac.zip Windows http://release.vectorworks.net/nnapub/updaters/24/NNA/eng/app/Vectorworks 2019 Updater-24.0.477321-win-installer.exe

You'll have to build your own spacers, the prolyte spacers in the libraries do not work

that rotation also happens randomly sometimes when connecting trusses, especially at corner blocks I think I reported it as a bug a while ago

SP3 and updater still does not work

I know it's going to be a simple answer but I can't work out why the attached does not work. I'm expecting an extruded rectangle centred at 0,0 with a BotZ of 0. The extrude and rectangle parts work but once I add in the maths to make the centre 0,0 it all goes wrong, the debug tool doesn't seem to do anything. Help! screen marrionette.vwx

Thanks Marissa that's great

I think you will have to un-group the stage plug (it will no longer appear in reports etc) and then you can use a solid subtraction. (you must be in a 3D view when you un-group otherwise it will only give you the 2D components)

you can also group the lighting fixtures to rotate them but this will not work for the truss

Is is not possible to rotate hybrid symbols like lighting devices in this way. Do a quick forum search for 'create plot and model view'. There are plenty of threads on this in the entertainment section of the forum This tutorial is a good place to start.

THIS! Link to your request and I will support. It's such a common scenario. Hoist top hook snaps to house point and low hook to truss would be great