Bad Geometry help needed

Hi there, Sketchup enthusiasts :slight_smile:

I am having issues with geometry in my model. Started to pull up walls this morning and got stuck. Not sure what is happening with my bathroom walls where the door opening is. I see that the door header doesn’t align with the other wall and I can’t figure out why.

Also one side of my bathroom window is not healed but I see all the lines so don’t know why it is not “healing” or covering that one small long rectangular part of it.

I am attaching a copy of my model — don’t know why it is showing in this purple and yellow colours but here it is. All kind of help is very much appreciated!

Here is my modelBottom FLoor.skp|attachment (431.3 KB)

Er…no it isn’t.

Just drag & drop the SKP file.

It didn’t attach?

Bottom FLoor.skp (431.3 KB)

It’s because the end of the wall at the door opening from which you pulled the header is not at 90° to the wall face. This is from underneath. Push/Pull extrudes faces at exactly 90°, thus the misalignment.

How did you get the floor plan in the first place? Is it an imported CAD file?

Yes, I did. Then I traced over it. This model has tons of non 90 degree angles but I didn’t think I won’t be able to build door headers that align.

Thanks for looking into it. I meant I am not able to align my door header once I am building in 3D. Is there any way to remedy this? Also, what about the one side of the window (in the bathroom) that doesn’t want to be healed? Thanks!

It would appear that by simply tracing over it, you created new bad geometry from the bad geometry in the CAD file. That slight out-of-squareness isn’t a problem in a 2D drawing but it’s critical in 3D.

Is that outer wall supposed to be at a slight angle? The problem where faces won’t form is that the edges are not in the same plane. That needs to be fixed.

If this was my job I would start over because there are plenty of things that need fixing. I would import the CAD file and place it to one side to use as a reference but I would NOT trace over it. I would draw the foot print of the floor and give it a little thickness before outlining the walls inside and raising them.

I see various issues that suggest you would be well served to go back to the original CAD drawing and start again. If you turn on color by axis in the style panel for edges, you will see that very few horizontal edges are aligned with the red or green axis. Likewise, if you examine the coordinate values of points using either the tape measure tool or the leader text tool, you will find that a lot of them are at strange and approximate locations, even when the units precision is set to 1/64. I would also recommend turning off length snapping in the units, because it tends to propagate errors once they arise.

As you draw, pay attention to the axis inferences and lock them as appropriate to keep things square and aligned. Use guide lines as needed to keep segments of walls parallel and/or in the same line. Type measurements in as needed when your tracing shows an imprecise length.

I presume what you are calling a CAD file is in fact not a CAD file at all but an image? Otherwise, why would you bother tracing over it? Sketchup can import most CAD file formats so you could save yourself a lot of time by importing instead of tracing.

Beware of sloppy Cad. It might not be as frequent today as it was 20-30 years ago but I have seen so many Cad files (dwg) drawn like many draftsmen/women were doing on the drafting table before computers were available. For example, one line made of multiple superposed lines. Angles that were off. Edited dimensions to save redrawing time. Open corners. Etc.

I did a few models using dwg files as guides. I never traced over these files but instead, use them only as guides. Many times I had to rectify drafting errors or imprecisions.

It was a Cad file. I traced over it with a line tool so I could crate faces etc to build up my 3D model.

As I wrote earlier, tracing over the CAD line work duplicated the bad geometry in the CAD file. You would be better off not tracing. Uae the CAD file only as a reference.

We trace over cad/pdf drawings all the time. The main issue is not to snap to anything in the imported file. We just import, top view, parallel projection, tape measure tool and scale the import to any dimension on the import, and just stay on your red and green axis’ inputting your dimensions via keyboard. It works slicker than snot.