Elevators are installed in high-rise buildings. However, the stairs can not be dispensed with, it can still be used as the main means of transportation for the residents of the following floors, as a means of transportation between the residents of short distances (adjacent floors), and as an evacuation channel for the residents in case of emergency. Accordingly, STAIR IS INDISPENSABLE, AND ITS SETTING POSITION AND QUANTITY SHOULD GIVE CONSIDERATION TO SAFETY AND CONVENIENT TWO RESPECTS. First of all to comply with the national "high-rise civil building design code for fire prevention" requirements. We should pay attention to the service area of each staircase and the distance between the two staircases, in the tower residence. As the core layout of stairs and elevators is relatively compact, a scissor staircase can be used to obtain two directions of evacuation.

Secondly, the choice of the position of the stairs and the relationship between the elevator should be appropriate, as the auxiliary vehicle of the elevator, should be organically combined with the elevator into a group. In order to complement each other. To BOARD TYPE OR THE RESIDENCE OF OTHER FORM, WHEN ARRANGING STAIR POSITION, SHOULD CONSIDER THE EFFECT OF THE POSITION OF MAIN BUILDING, ELEVATOR TO RESIDENTIAL PLANE AND BODY SHAPE. When there are multi-directional corridors, such as cross, T, H and other corridors.

Should be placed at the intersection of the corridor as far as possible, in order to facilitate the concentration of people from multiple directions. When it is a zigzag corridor, the appropriate location should be chosen according to the length of the building and the provisions of the fire code on the safe evacuation spacing, so that the number of stairs is as small as possible.