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1, the stairwell design ®>₹should be in line with the current γ↓£∏national standards "buildinπγg design fire code"♠±$; (GBJ16) and "hi₽↓♦gh-rise civil building design firλ​¶↔e code" (GB5004  5) the relevant provisions.∑•

　　2, the net width of the stairc™✔φase section should not be∞$≈ less than 1.10 m. Si €↓♠x floors and six floors of the fol÷>α✘lowing residential, one side of the sta≠α∑ircase section with a balustr∏¥™★ade net width should not be less thπ♥←∑an 1m.

　　Note: The net width of th∑‍e stair section refers t÷αo the horizontal distance betw≠₽een the wall and the centre of ÷β∞the handrail.

　　3, the width of the stairα• tread should not be less than 0§☆♦×.26m, the height of the tread♥™₩' should not be more than 0.175m. $↕ the height of the handraΩ♠il should not be less than 0.90m.☆∞ the length of the horizont® al staircase balustrade is×↕ more than 0.50m, the hφ™‌eight of the handrail sho ↔uld not be less than 1.05<≈φm. the headroom between vertical bars✔₽§ of the staircase balustrade should n ☆→ ot be more than 0.11m.

　　4, the net width of the stairc₹←ase platform should not be less t♣₹≠"han the net width of the stai♣♥ rcase section, and shall not be ₩δless than 1.20 m. The vertical height ∞₽of the staircase platform from the★'∞ lower edge of the structure to the ∏ ☆☆pedestrian passage should not be σ"↑×less than 2 m. The di£σfference in height between the entrancוe floor and the outdoor ground sh♥≥ould be not less than 0.10 m. The hei$"ght difference between the entranc δφe floor and the outdoor gro≥÷ und should be not less than 0.10€£ m.

　　5、When the net width o$φ♠ f the stairwell is greater than>×✘✘ 0.11m, measures must be taken t"¥←→o prevent children from climbin¶σg and slipping.

　　6, seven or more residential o∑σ¥↔r residential entrance floor fromΩ‍₩ the outdoor design of the floor he∑÷₹✔ight of more than 16m a $♠≈bove the ground must be set up lifts.

　　Note:

　　(1) For multi-storey resid<₽γ ential buildings with the ground ✘α¶floor used as shops or othe §¥r rooms, lifts must → be installed when the heλ§ight of the floor of the♥‌↑∞ entrance level of the residents →‍from the outdoor designed ground level↔&®< of the building exceeds 16m.

　　(2) If the ground floor i✔$&≈s used as an elevated floor or storageφ‍✘✘ space for multi-storey residentia™®l buildings, lifts must be installed &‍when the floor of the entra€&♦δnce level of the resi₹↕dents is more than 1∏÷φ₩6m away from the outdoor design ground  "∑ height of the building.

　　(3) The top floor is a ‍★♠πtwo-storey set of leaping resideΩ©δ₩nce, the part of the leaping floΩ$ or does not count the number¥§​ of floors. If the height of the entra​≠nce floor of the top floor from th"☆e outdoor design ground of the builλ♠ding does not exceed βΩ16m, the lift may not γ★¶be provided.

　　(4) When the middle floor of the r Ωesidence has a direct♦π× access to the outdoor g&φ♥round and a fire escape, the num'×βber of floors can be calculated from t≤←he middle floor.

　　7, twelve floors and above ∏₩​the high-rise resident ©®ial, each building should not​✘ be less than two sets☆♦ε of lifts, which is appropriate>£ to configure a stretcher can be a↕±ccommodated in the lift.

　　8, high-rise resident≥$ial lift should be set up on £×♠each floor. When the residentia¥∏₽l lift is not set up on each floor, th≈÷ •e number of floors without&$ station should not exceed two. Tow₩×er and corridor type high ∏↕¥-rise residential lif∏•βγt should be arranged in groups←¥×±. Unit-type high-rise residential units™↑​γ only one lift per unit shoul♠♦d be used to contact the∞₽ corridor connection.

　　9, the depth of the waiting hall sho©₹uld not be less than the depth of the l ¥"§argest car box in multiple×↓↔∏ lifts, and should not be less th€"≤€an 1.50m.