Technical Booklet E Fire Safety·Page 144·Table 5.3
Table 5.3: Unprotected Areas in Small Buildings and Compartments (Method 2)
A lookup table showing the maximum percentage of unprotected area permitted based on the minimum distance between a building side and the relevant boundary, differentiated by purpose group.
Table 5.3 Unprotected areas in small buildings and compartments (Method 2)
Minimum distance between side of building and relevant boundary (m) | Maximum total percentage of unprotected area (%) Purpose groups 1, 2, 3 and 5 | Purpose groups 4, 6 and 7*
N/A | 1 | 4
1 | 2 | 8
2.5 | 5 | 20
5 | 10 | 40
7.5 | 15 | 60
10 | 20 | 80
12.5 | 25 | 100
Notes: * In the case of a car park in Purpose Group 7(b) the distances given for Purpose Groups 1, 2, 3 and 5 may be used. N/A = not applicable. Intermediate values may be obtained by interpolation.
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