You are here:Product > Class 2 Fire Services Category> Pressurization of Staircases

[Fire Services Hydrant systems] [Fire Services Hose Reel systems ] [Emergency lighting] [Water Spray Systems] [Supply Tank] [Fire Services Sprinkler Systems] [Automatic actuating devices] [Exit signs] [Automatic Fixed Installations Other Than Water] [Fixed Foam Systems] [Deluge Sprinkler Systems] [Drencher Systems] [Pressurization of Staircases] [Emergency Generator] [Fixed Fire Pump/Intermediate Booster Pump]
left side
right side
product select menu


Pressurization of Staircases

System design shall be based on the requirements of British Standard 5588 “FirePrecautions in the Design of Buildings”: Part 4 “Smoke Control in protected escape routes using pressurization” (latest edition).

The minimum pressurization level of 50 Pa shall be achieved with all doors closed and all pressure relief systems operating. The maximun design pressurization level shall be such that under no circumstances shall the combined force, to overcome the pressure differential across any door and the action of the door closer, exceed 133N (13.5 kgf) when applied at the designed door opening handle or push plate position.

Calculations shall allow for pressurization to be maintained and/or the minimum average egress velocity through all entry doorways of 0.75 m/s be maintained with any three single leaf doors (one on each of 3 consecutive levels) and the largest exit door open, plus leakage allowances for all other doors.


Note that in British Standard 5588: Part 4 CLAUSE 6.1, Code of Practice 352 hasbeen withdrawn and replaced by British Standard 5720.

Pressurization of Staircases

online quotation



This page of partial functions have not been able completely to support help disabled persons' software and the instrument.


(C) WKS Fire Engineering Co. & WKS
Engineering Ltd All Rights Reserved

Office Address: Room 1, 5/F Tai Shing Industrial Building, 273-279 Un Chau Street, Sham Shui Po, Kowloon
Workshop Address: Rm 4, Block A1, 15/F., Kin Hing Industrial Bldg, 17-23 Shek Kin Street, Kwai Chung
Tel:(852)2625 5554 Fax:(852)2625 0035

Update Date: 25-8-2011

[Important Notices] [Personal Privacy][Freqency Asked Question][Sitemap]