Discussion on fire protection and smoke control system design of existing building renovation—In response to Fire protection design review guideline for existing building renovation in Nanjing(2021ed)

In order to solve the problem of fire protection design for the renovation of existing buildings, Nanjing has issued the design review guideline. The relevant content of fire protection and smoke control system design is discussed. The application cases of actual engineering design are analysed. Some problems existing in the guideline are put forward, which should be refined when the guideline is revised.