15x10m multifamily apartment fourth floor house and roof floor plan

15x10m multifamily apartment fourth floor house and roof floor plan is given. Here, the staircase is provided inside of home. On this apartment building, the third floor is duplex house building. In this floor, the master bedroom, open terrace, and attached bathroom is available. In this drawing, roof floor plan is given. The front section view of the apartment building is given from the footing level.