STRUCTURAL FIRE PRECAUTIONS D - South Ayrshire Council

D2.1
D
Table 2 to D2.1: Minimum duration and maximum compartment area in a building other than a single
storey
Purpose Maximum Maximum Duration of Duration of Duration of elements of structure,
groups and area of a area of an external elements of and where appropriate
purpose compart- individual walls structure, compartmentation (see D3.1)
sub-groups ment storey (see D8.1) and where The The The
(m 2 ) [1] Within a appropriate topmost topmost topmost
compart- compart- storey of a storey of a storey of
ment (m 2 ) mentation building is building is a building
[1] (see D3.1) at a height at a height is at a
in a of not more of not more height of
basement than 7.5 m than 18 m more than
above above 18m above
ground ground ground
1 Dwellings Unlimited Unlimited Medium [2] Medium Short Medium Long
2A Institutional 1,500 1,500 Medium Medium Medium Medium Long [3]
2B Other 1,000 1,000 Medium [2] Medium Short Medium Long [3]
residential 2,000 2,000 Medium Medium Medium Medium Long [3]
4,000 2,000 Medium Medium Long Long Long
3 Offices 2,000 2,000 Medium [2] Medium Short Medium Long [3]
4,000 4,000 Medium Medium Medium Medium Long [3]
8,000 4,000 Medium Medium Long Long Long
4 Shops and 500 [4] 500 [4] Medium [3] Medium Short Medium Long [3]
commercial 1,000 [5] 1,000 [5] Medium Medium Medium Medium Long [3]
2,000 [6] 1,000 [6] Medium Medium Long Long Long
5A Assembly & 1,000 1,000 Medium [2] Medium Short Medium Long [3]
recreational 2,000 2,000 Medium Medium Medium Medium Long [3]
(high risk) 4,000 2,000 Medium Medium Long Long Long
5B Assembly & 1,500 1,500 Medium [2] Medium Short Medium Long [3]
recreational 3,000 3,000 Medium Medium Medium Medium Long [3]
(low risk) 6,000 3,000 Medium Medium Long Long Long
6A Industrial 500 500 Medium Medium Medium Medium Long [3]
(high risk) 6,000 3,000 Medium Medium Long Long Long
6B Industrial 2,000 2,000 Medium Medium Medium Medium Medium
(low risk) 15,000 7,500 Medium Medium Long Long Long
7A Storage 200 200 Medium Medium Medium Medium Long [3]
(high risk) 1,000 500 Medium Medium Long Long Long
7B Storage 500 500 Medium Medium Medium Medium Medium
(low risk) 5,000 2,500 Medium Medium Long Long Long
7C Open-sided Unlimited Unlimited Short Medium Short Short Short
car park
Notes:
1. In a building of purpose groups 3 and 5-7, areas may be doubled where there is an appropriate fire
control system.
2. Short duration for –
a. external walls more than 1 m of the boundary; and
b. external walls not more than 1 m from the boundary in the case of a building with an appropriate
fire control system.
3. Medium duration for compartmentation.
4. 1,000 m 2 , provided there is an appropriate fire control system.
5. 2,000 m 2 , provided there is an appropriate fire control system.
6. Unlimited, provided there is an appropriate fire control system.
9D Amdt: September 2001