Life safety
4.4.2.5 Smoke control of exits
1. Compartmentation should limit the spread of fire and smoke, it can be effective if the 
staircase are pressurized. 2. The pressurization difference for staircase shall be 50 Pa, whereas, for lobbies and corridors 
it shall between 25 and 30 Pa. 3. Wherever pressurized staircase to be connected to un-pressurized area it should be 
separated by 120min fire resistant wall. 4.5.1 Compartmentation
1.