Drawing HVAC flexible duct in 2D

PaulK
PaulK
in BricsCAD Mechanical

Where can I find how to draw circular flexible ductwork in BricsCAD 2D or 3D

Comments

  • Roy Klein Gebbinck
    Roy Klein Gebbinck

    Charles Alan Butler (CAB) has created a Lisp program for this: Flex Duct Creator. It is available at theswamp.org (you have to log in to be able to download the zip-file).

    An alternative is to use a special linetype as demonstrated here.

  • Jason Bourhill
    Jason Bourhill

    Two options for creating a simplified 3D duct.
    1. For a simple run use LOFT with the setting ‘normal to both ends’ (set LOFTNORMALS = 4). You need a CIRCLE at each end to create the duct, no need to create a guiding line.
    2. For more involved runs you can use DMTHICKEN in conjunction with a SPLINE, making sure that the spline tangency at each end is parallel to your connection. Using a SPLINE allows you to go up and down in the Z axis.

    I also found previously found DMTHICKEN was useful for modelling metal spouting.

    Regards,
    Jason Bourhill
    CAD Concepts

  • Charles Alan Butler
    Charles Alan Butler

    Here is the ZIP file.

This discussion has been closed.