manythanks, I used miscellaneous>box and it works

ok thanks, this is the figure
https://paste.opensuse.org/pastes/1a09f8246d86
ciao

Hi, my wall is made as this:
wiev by side

roof
__________
................|beam
................|_____
........................|
........................|wall
........................|
this format seems that doesn't allow to insert spaces so don't take into account the dots and consider them as ...