No 2D Symbols Mechanical Systems

I'm having problems with 2D symbols not showing up on any file when I use the drawing extraction manager to create a duct layout plan in Bentley Mechanical Systems V8i. This 2D symbology usually shows when a duct is going up or down, or if a diffuser/grille is supply or return, etc....This occurs with or without HVAC Rules defined for the drawing definition. This also occurs when I run off our network standards and even when I run off the local bentley mechanical system install. Attached is a screen shot showing some ducts and at each end the 2D symbols are missing that should be showing the left side going up and the right side going down (All Levels are On). Help would greatly be appreciated. Also attached is the forward view settings for the drawing definition.

No 2D Plan Symbols

Bentley Microstation V8i: 08.11.05.17

Bentley Mechanical Systems: 08.11.05.27

Microsoft Windows: Vista Ultimate 32Bit

Parents
  • I'll bring this back from the dead in hopes that it can help others later. We are able to get 2D symbols using compound cells however we get solid lines regardless of whether the duct is going up or down. Typically we would like to see hidden lines used if the duct is going down and solid lines if the duct is going up. Is that possible?

    Rob Cowan

    CH2M Hill

Reply
  • I'll bring this back from the dead in hopes that it can help others later. We are able to get 2D symbols using compound cells however we get solid lines regardless of whether the duct is going up or down. Typically we would like to see hidden lines used if the duct is going down and solid lines if the duct is going up. Is that possible?

    Rob Cowan

    CH2M Hill

Children
  • This might be a little time consuming, depending on the size of the model, but a re-symbolization rule can be applied to a selection set as opposed to a Part and Family.

    A rule can be created to set the duct symbology to a dashed line code. Create a selection set of the duct in the master model and in the Drawing Manager-Edit drawing Definition-HVAC Rules tab create a new rule assignment setting the HVAC elements setting to Single Selection Set and Add the selected duct. Select the new rule you created.

    Again this might be a little time consuming depending on the model. Using Select By Attributes might speed up the process of creating a selection set.



  • Thanks for the reply Paul. I appreciate the option but that would be too much work. I'll deal with the all solid line symbols instead of that effort. What's unusual to me is that the help file appears that BBMS should do this automatically. Here is a copy of a portion of the help file that shows the options I want. The hidden is an elbow turning down and the solid is an elbow turning up.

     

    Also, in the Part/Family library, Cut Patterns tab a Pattern Cell is defined. For instance the supply ductwork pattern cell is DS057. That cell is in a library (HVACDuctSymbols.cel). In that library there is DS057 and DS057D, DS057 is for an up and DS057D is for a down. Is there really no way to select them based on orientation? It looks so close.........

    Thanks!

    Rob Cowan

    CH2M Hill

  • You are  right, I guess I was thinking you wanted the edge of the down duct to be dashed as well. The DEM process should recognize the orientation of the component (elbow for example) in relation to the cut plane. I did a very simple example:

     

    In the above I have no rules applied. If I use a rule that has the "Symbol" graphics type switch turned on (like what you posted from the help), the rule will override the cell symbology, as I have done here:

     Applying that rule to the extraction, I get this result:

     

    So, in tandem with your insulation leveling (in the other thread) I would try applying rules, but leave the "Symbol" graphics type switch off for the rules.

    Note that if you have overrides on in the DEM Forward View tab those overrides you would be overrriding the cell symbology also:

    Gets this result:

     

    If you are not getting the dashed for the "down" components a service ticket wouldf probably be in order.

     



  • I would agree, Paul.  

    As long as the DS057 cell uses a continuous linestyle and DS057D uses dashed, and DS057 is the cell defined by the part, the orientation of the fitting should "trigger" which cell is used.



  • Thanks Steve and Paul. The answer was the override toggle in the forward view. We had that toggled on. Turning that override back off allowed Mechanical to place the correct symbols in there. Thanks!

    Rob Cowan

    CH2M Hill