What is the design area of a hotel that needs two fire exits, and how many meters should the farthest room reach the fire stairs?

Article 5.3 of Code for Fire Protection in Building Design: Almost all hotels should have more than two fire stairs (fire exits). Except as stipulated in Article 5.3.2, the distance from the farthest room to the exit should not exceed 40m (the room between two exits) or 22m (the room on both sides or at the end of the bag walkway).

Evacuation stairwells and stairs on walkways should meet the requirements of safe evacuation, and spiral stairs and fan-shaped steps should not be used. Spiral stairs and fan-shaped steps are not suitable, because the change of step width is easy to make people fall down in an emergency, causing congestion and blocking traffic. Because of architectural modeling requirements, when it is necessary to use it, the plane included angle formed by the upper and lower steps shall not exceed l0, and the width of the steps at 250mm from the handrail of each step shall not be less than 220 mm ...

Extended data

Hotel fire stairs layout:

(1) The layout of stairwells shall meet the requirements of safe evacuation distance, and the formation of bag-like walkways shall be avoided as far as possible. ?

(2) Stairwells should be arranged near the standard floor or at both ends of the fire zone to facilitate two-way evacuation. ?

(3) Set by the external wall, which is convenient for natural lighting, ventilation and rescue work of firefighters. ?

(4) Except for the stairs connected to the basement and the stairs leading to the refuge floor in the super high-rise building, the position of the evacuation stairwell on each floor should not be changed, and it should be straight up and down without changing its position. There should be an exit to the outside on the first floor. The change of stairwell location makes it difficult for people to find stairs in an emergency, which delays the evacuation time and causes undue casualties, especially in public buildings such as hotels, restaurants and commercial buildings. ?

Baidu encyclopedia-evacuation stairs

Baidu Encyclopedia-Code for Fire Protection of Architectural Design