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Author Topic: Do I need to draw my own floors?  (Read 1274 times)

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Do I need to draw my own floors?
« on: November 21, 2018, 09:17:24 am »

Hi, this is my first time using Pathfinder other than the tutorial scenario so be patient!

I'm doing evacuation modelling for a 14 storey building with each floor different to the one below it. The .dwg files I've been supplied with are for each individual floor rather than one .dwg file for the entire building. When I import these into Pathfinder, some are recognised as 3D models and some as 2D floorplans, however all are flat. This is where my problems arise, as the imported files don't seem to have much floor area that I could click to extract the geometry, instead, the architect has created floorspace in certain areas and left blank space in others. Does this mean I will have to draw in my own floors using the 'create rooms' tools? Is there any way to do this quickly and accurately?
Secondly, is there an option to extract all of the geometry that you imported, as they are very detailed .dwg files so it's quite hard to individually click each segment of floorspace.
Additionally, I've been converting the 3D BIM models to .dwg but these also don't have floor space. Any help would be greatly appreciated, I can pass on some of the .dwg files if you want.




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Re: Do I need to draw my own floors?
« Reply #1 on: November 22, 2018, 09:21:58 am »

Hi Ben,

from my experience room extraction only works with very tidy and accurate dwg imports. Your imported plans don't seem that way. In your case its probably best to draw the rooms by hand using the rectangular room tool or the free hand tool. This is usually quite quick and easy once you get the hang of it. Just use the imported geometry as a background image to draw on.
You may use the copy function for floors that are similar or just slightly different.

The alternative would be to tidy up the .dwg files before importing into Pathfinder. Not sure if it's worth your or the architect's time.

Good luck

Bryan Klein

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Re: Do I need to draw my own floors?
« Reply #2 on: November 27, 2018, 07:54:07 pm »

The 3D detection only means that there are elements of the file that have different Z values in the file.
You can convert this into '2D' by checking the boxes as shown in the attached screenshot.
Please note that you can change the elevation that the file is imported to by setting the Z value (green arrow) in this import dialog.

For 3D floor extraction, you must have a horizontal solid surface to click on.
For 2D, you must click into a blank space inside of the lines bounding the room.

Please send some example CAD files to support so we can dig in a bit further.