Staircase with metal stringer against the wall side or stainless steel stringer. Steps are with metal or stainless steel support outside of the step. Steps can be of hardwood, metal 10 mm and glass 10+10+10.
The handrail can be of wood ø50mm or in stainless steel ø42mm. double flat metal newel post 40×6 with glass pannels 8+8mm.