Creating Spaces using a CAD Link .dwg

[Anonymous]

Hi,

I was wondering if there is a way to create spaces using the 2d lines that bound rooms in a inserted CAD Link .dwg. I would like to make a basic energy analysis by creating volumes using this .dwg, without having to draw walls. So somehow make all lines in the .dwg room bounding such that when I create spaces, the rooms are created automatically by revit, just by "feeling" the boundaries of the rooms in the 2d drawing. Maybe an add-on can do this?

Thanks!

[ToanDN]

You need to at least draw Space Separation lines. Also, if the space heights play a role in the energy analysis then you need that too, by adding roofs or ceilings.

[Anonymous]

I have created the separation lines, using rectangles  (unfortunately "pick lines" did not work, saying that the lines overlap), then created the spaces successfully, with the base offset "0" (ground level) and upper limit Level 1 (=height of one floor) but then I got the error "there are no space bounding elements", when I tried to run the energy simulation.

So I thought that there are no envelope (boundaries) properties set and that's probably why. So I selected all spaces in my plan view and changed the Construction Type to "Construction 1", where I have checked "override" to all categories (walls, roof, etc.) to the preset revit properties (flat room, standard wall construction, etc). But still I get the same error. So now I'm stuck. It seems I have set the height and envelope constraints, so revit should have all it needs to do the simulation, but still I get the same error. I must mention that the  "green volumes" do show in the graphical view of energy analysis window, but the "no space bounding elements" error pops up immediately after.

Thanks for your support!

[mgestwa]

Sorry for digging out

Have you resolved your problem?

[Anonymous]

Unfortunately the only way of creating valid volumes for the energy analysis is by drawing walls, floors/ceilings and then automatically creating spaces bounded by these elements. Using separation lines to create spaces for energy analysis does not work and the need to draw rudimentary architecture over the 2d .dwg still remains.

But anyway the energy analysis module is broken so even if you make the space volumes work, the heating and cooling loads results are incorrect:

https://forums.autodesk.com/t5/revit-mep-forum/heating-loads-much-smaller-than-hand-calculations/td-...