z.nr. cross-sections (3x)
z.nr. situation (3x)
z.nr. first floor (3x)
z.nr. 1st floor (3x)
s.nr. 2nd floor (3x)
s.nr. 3rd floor (3x)
s.nr. 4th floor (3x)
s.nr. basement (3x)
s.nr. design scheme