This is exactly what I was looking for .
What an elegant solution it is !

Thank you very much for your help. You made my day .

Benno

Thanks Hans and bdfd for your proposals.
It seems it is not possible to simply taper a wall so its rear spot as well as its front spot touches the stairways.

Simply drawing a line from the end of the lower wall-line would "extend" the wall to the stairways. Also"covering" the gap with a room ...

Thanks bdfd, but I can't construct a wall at the side of the stairs, just to close the gap.

I'm just looking for a possibility to design a wall with an skewed end of approx 35 degrees (not 90 degrees as the default wall-ends). Or if you want, a wall with the inside longer than the outside.

Pls ...

Hello,

I've just started to work with Sweet Home 3D and have a first question :

I have a thick wall that is attached to a stairway. The stairway is at an angle of approx 35 degrees to that wall. How can I create the wall so it completely touches the stairway and does not leave a triangled gap ...