connection scale - ceiling

[Tubo]

Good evening, I'm trying to create a monolithic scale, the scale starts from a wall about 1 meter high and ends on a loft.
The problem is that I can't extend the bottom of the staircase on the ceiling or on the wall, but it connects on both creating a tooth. in the attached image I marked with two arrows where I have the problem.
Do you have ideas? Thank you!

 

[Tristan]

families of type loft board and wall extrusion with appropriately shaped profiles

 

[Tubo]

families of type loft board and wall extrusion with appropriately shaped profiles

Thank you so much I will try so!

 

[Tubo]

Good morning, everyone.
I'm still struggling with these stairs.
thanks to tristan I have brilliantly solved the problem of the link scale - wall/solar, but now I have been represented the problem with the beam. In practice I have to connect the scale to the beam. but obviously it does not work in the wall extrusion or the loft edge. How can I solve the problem? one last question, is there a way to eliminate the concrete from the steps above the blue line? thank you all, I wish you a good day.

 

[Tristan]

In practice I have to connect the scale to the beam. but obviously it does not work in the wall extrusion or the loft edge. How can I solve the problem?

change the support beam.

Is there a way to remove the concrete from the steps above the blue line?

or edit the material applied to them or go to graphic replacement / visibility

 

[Carmine71]

hi, you would have the desire and time to explain, how would you do it to a child (translating neophyte), the steps to get the scale fitting - loft?