How can a staircase in a complex building be set up? What basis?

Integrated floor of a layer for the canteen, the second floor for the classroom, three for the office, four, five, six for the dormitory, stairs how to set up?

The second floor to separate the stairs, three to separate the stairs, four to six to separate the stairs.

The second floor to separate the stairs, three to separate the stairs, four to six to separate the stairs. According to the following: 1. "Office building design specifications" 5.0.3 2. "Dormitory building design specifications" to explain the provisions 3. "Design Guidelines for Primary and Secondary Schools" 6.2.25

According to the following: 1. "Office building design specifications" 5.0.3 2. "Dormitory building design specifications" to explain the provisions 3. "Design Guidelines for Primary and Secondary Schools" 6.2.25