Smoke-proof stairwells
Smoke-free stairwells: stairwells intended for evacuation of people during a fire (divided into three types):
a smoke-free stairwell with access to the stairwell from the floor via an outdoor air zone through open passageways, provided that the passage through the air zone is smoke-free - type N1;
a smoke-free stairwell with air pressurization in the stairwell during a fire - type N2;
a smoke-free stairwell with access to the stairwell from the floor via a vestibule with air pressurization (constant or during a fire) - type N3
Source: "SP 118.13330.2012. Code of Practice. Public buildings and structures. Updated edition of SNiP 31-06-2009"
(approved by the Order of the Ministry of Regional Development of Russia dated December 29, 2011 No. 635/10)
Понятие «лестничные клетки незадымляемые» женского рода.
| Падеж | Единственное число | Множественное число |
|---|---|---|
| Р | лестничной клетки незадымляемой | лестничных клеток незадымляемых |
| Д | лестничной клетке незадымляемой | лестничным клеткам незадымляемым |
| В | лестничную клетку незадымляемую | лестничные клетки незадымляемые |
| Т | лестничной клеткой незадымляемой | лестничными клетками незадымляемыми |
| П | лестничной клетке незадымляемой | лестничных клетках незадымляемых |