Architecture building

Hi everybody. I am new to SU. I am sketching an old school (pic School 1) and I’m facing many problems. For the moment I have two questions:

  1. Whle I was adding the windows a strange extrusion appeared in a wall (pic School 2). When I try to remove or straighten it, I lose some walls. What is my mistake?
  2. How can I replace the existing windows in the building with the one masked in blue?
    Thanks in advance

Oops, I forgot the pictures!

Sorry, only one picture allowed per message!

The extrusion

The windows

It looks like you pushed the end of the perpendicular wall through that wall. The grey faces are the inside of the opposite face of that wall. You can try pushing it back to parallel with the previous face. The easiest solution, at this point, since there is so little attached geometry might be to erase that section and draw it in again.

The mistake may have happened like this:

Possible fix:

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It looks as if there may be quite a few funny things going on with your model. One of the first things to learn about SU is its inherent “stickiness”, as Aaron has demonstrated. Moving one thing can have an effect on other geometry. So an early lesson is to group things. In your model, you might make the external walls one group, the internal walls another, the floor a third, and so on. If you did that, you would find that altering an internal wall would have no effect on an external one.

Also, it would be normal to make things like windows and doors into components. Components are just like Groups except that if you change one, all instances change. It is not clear what the difference is between your window in blue and the others but I presume there is one. If the ones already in the walls are components, you can just select and delete. If they are all instances of the same component, swopping them with another component is even easier. But we’re getting quite sophisticated now!

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Thank you very much. You have been very hlpful.

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