(1) To separate the lobby of the fire lift from that of the scissor staircase by fire wall, and provide smoke prevention measures according to the related national standards. If there are openings in the fire wall, the openings should be protected by Class A fire door. No room should be permitted to have doors open to the staircase so as to prevent smoke from spreading to the staircase. (4) Lobby and transfer passageway should be finished with non-combustibles, no combustibles and other articles that may not guarantee the safe evacuation of the occupants should be permitted in the lobby and the transfer passageway; (5 Family doors should be protected by Class A fire door; (6) If the lobby can’t be provided with natural lighting and natural smoke exhaust, emergency lighting and evacuation indicating signs should be installed, especially in the transfer passageway