Problem With Creating Slab For My Project

SketchUp Pro
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1

Hi SketchUp Community,

I’m an architecture student at Long Beach City College and I need help to cover the whole bottom of my house to create a slab because it won’t let me.

Can anyone help me, please?

2

you should be able to load the file now (7th icon)

3

This is my skp. file of the house I’m modeling. I just need help creating a slab covering the entire bottom of house.
House ADU.skp (3.8 MB)

4

First you should invert the gray faces you have, you are showing the back side.

Just make a group to the walls and then draw the slab.
What version of SketchUp are you using?