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Mike Wright

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About Mike Wright

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    United Kingdom

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  1. Mike Wright

    Reset Braceworks IDs not working in SP4?

    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
  2. Mike Wright

    Prolyle H30V Box Corners

    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!
  3. Mike Wright

    Bridle tool problem

    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.
  4. Mike Wright

    Modelling an LED screen

    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.
  5. Mike Wright

    Bridle tool problem

    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
  6. Mike Wright

    LED wall looks dim, truss looks basic, no detail

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

    Modelling an LED screen

    *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
  8. Mike Wright

    Modelling an LED screen

    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
  9. Mike Wright

    2019 SP3 strange DWG import behaviour

    solved - for some reason it had been set to convert all objects to 2D
  10. Mike Wright

    Viewport from clip cube not functioning

    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
  11. 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
  12. 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
  13. Brilliant! That menu has always evaded me. It's not very obvious. Thanks
  14. Thanks Is there a way of adjusting this property once a worksheet is generated?
  15. When I convert my trusses to lighting positions they no longer appear in my truss count worksheets. Am I doing something wrong?

 

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