Technical Booklet E Fire Safety·Page 56·Table 2.4
Table 2.4: Widths of escape routes and storey exits
Specifies minimum widths in millimetres for escape routes and storey exits based on the maximum number of people assessed as likely to use them, with notes on special provisions for schools, Part R requirements, gangways in storage areas, and the application of the 5 mm per person rule.
Table 2.4 Widths of escape routes and storey exits
Maximum number of people(1) | Minimum width(2)(3) mm
50 | 750(4)
110 | 850
220 | 1100
More than 220 | 5 per person(5)
Notes:
(1) Assessed as being likely to use the escape route or storey exit.
(2) In schools the minimum width of corridors in pupil areas should be 1050 mm where escape is in more than one direction and 1600 mm where escape is in one direction only.
(3) Part R may require greater widths.
(4) May be reduced to 530 mm for gangways between fixed storage racking, other than in public areas in Purpose Group 4 buildings.
(5) 5 mm per person does not apply to an opening serving less than 220 persons.
Source — /Users/richardhill/Documents/planning-arch-project/data/documents/regional/Technical Booklet E - Fire Safety.pdf