Air flow network analysis of separate pressurization air supply and smoke control schemes in smoke prevention staircase and its common antechamber

By an air flow network analysis, calculates and verifies the data of air flow control in the table 8.3.2-2 of the item 8.3.2 of the chapter 8 in the present fire protection code of tall buildings. Reveals the flow characteristics of separate pressurization air supply. Calculating results show that it is useless to pressure to smoke prevention staircase, since pressurization supply air goes directly from evacuation exterior door.