This chapter specifies the additional requirements peculiar to buildings of respective purpose groups. These additional requirements shall be read in conjunction with other requirements relevant to the respective purpose groups stipulated in Chapter 1 to 8 of this Code. Where there are conflicting requirements between this chapter and the preceding chapters, the requirements stipulated in this chapter shall take precedence.
(1) Single household dwelling
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Explanations & Illustrations
Clause 9.1.1a.(1) : General
.tmb-firecode.png?Culture=en&sfvrsn=c701f4c_1 "Fg.9.1.1a(1)")
4 storeys or levels form one compartment
Figure 9.1.1a.(1) : Single household dwelling
Building having 4 stories or levels under PG I are permitted. The above relaxation was introduced in 13 June 1996 to take into consideration of proliferation of 4-level PG I buildings due to the sudden surge in the public demand for two storey conventional houses with attic and basement.
The SCDF reviewed the above matter and issued a circular on 14 Dec 1999 to allow buildings under PG I to have more than 3 levels or floors if they are occupied as a single household dwelling without the need to provide automatic fire system or external staircase.
Buildings under PG I can consist of more than three floors if they are occupied as a single household dwelling.
(2) Basement levels
Effective Date: 01 Mar 2019
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Explanations & Illustrations
Clause 9.1.1a.(2) : General
-1.tmb-firecode.png?Culture=en&sfvrsn=836655e9_1 "Fg.9.1.1a(2)-1")
Figure 9.1.1a.(2) -1
-2.tmb-firecode.png?Culture=en&sfvrsn=78686138_1 "Fg.9.1.1a(2)-2")
Figure 9.1.1a.(2) -2
Amendment History
| 9.1.1a.(2) |
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01 Mar 2019 |
Revised, formerly Cl.3.2.5(c)(i) |
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For PG I building which has four or more levels (including the basement levels and attics), the basement levels shall discharge directly to the external space at grade level.
Effective Date: 01 Mar 2019
Amendment History
| 9.1.1a.(2) |
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01 Mar 2019 |
Revised, formerly Cl.3.2.5(c)(i) |
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(3) Access staircases
Effective Date: 25 Aug 2023
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Explanations & Illustrations
Clause 9.1.1a.(3) : General
Buildings which exceed 3 storeys or levels, inclusive of attic and basement but not exceeding 4 storeys or levels are not required to comply with either the provision of an automatic fire alarm system or the provision of an external exit staircase to serve the topmost storey or level. See Figure 9.1.1a.(3) - 1 and 9.1.1a.(3) - 2, subject to complying with the clear width of staircase and corridor as mentioned in Table 2.2A.
-1.tmb-firecode.png?Culture=en&sfvrsn=b8328a24_1 "Fg.9.1.1a(3)-1")
Figure 9.1.1a.(3) -1 : Unenclosed internal staircase serving as
means of escape for the building
-2.tmb-firecode.png?Culture=en&sfvrsn=75c8240f_1 "Fg.9.1.1a(3)-2")
Figure 9.1.1a.(3) -2
An alternative arrangement to fire separates the basement from upper storeys. Basement level shall be compartmented and separated from upper storeys such that discharge shall be directly to external space.
Means of escape for a building or a separate part of a building of single occupancy of PG I can be provided via access staircase(s).
b. Structural fire precautions
(1) Attic floor
An attic in buildings under PG I can be constructed of timber boarding on timber joists, provided it is protected to achieve the fire resistance rating required of the elements of structure of the building or compartment.
(2) Floor over a basement
Effective Date: 1 Sep 2024
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Explanations & Illustrations
Clause 9.1.1b.(2) : General
.tmb-firecode.png?Culture=en&sfvrsn=dc86a605_1 "Fg.9.1.1b(2)")
Figure 9.1.1b.(2) : Floor over a basement
Any floor immediately over a basement storey, if such storey forms part of a building of PG I which has four or more storeys (including the basement storey), shall be constructed as a compartment floor, i.e. horizontally separating the upper storeys from the basement. The exit staircase serving the basement shall be made to discharge into the exterior at grade level.
Amendment History
| 9.1.1b.(2) |
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01 Mar 2019 |
Revised, formerly Cl. 3.2.5(c)(i) |
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| 9.1.1b.(2) (dated 1 Sep 2024) |
1 Sep 2024 |
1 Sep 2024 |
Relaxation |
9.1.1b. Structural fire precautions
(2) Floor over a basement
For PG I building which has four or more levels (including the basement storeys and attics), the floor immediately over the basement storeys shall be compartmented by compartment walls/ floors. Where there is an internal connection between the basement storeys and upper levels, it shall be compartmented by a fire-rated door at the 1st storey landing.
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1 Mar 2024 |
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For PG I building which has four or more levels (including the basement storeys and attics), the floor immediately over the basement storeys shall be compartmented by compartment walls/ floors. Where there is an internal connection between the basement storeys and upper levels, it shall be compartmented by a fire-rated door at the 1st storey landing or basement landing.
c. Extent of unprotected openings
(1) The extent of unprotected openings in an external wall of a building under PG I, in relation to its distance from the relevant boundary, can be based on the internal room/space in the building that has the largest extent of unprotected openings to comply with Table 1 of Annex 3B.
(2) Internal walls enclosing the room/space in the building except glazing, are not required to be fire-rated, but shall be constructed of non-combustible materials.
Effective Date: 1 Sep 2021
Amendment History
| 9.1.1c. |
1 Sep 2021 |
1 Sep 2021 |
Clarification |
Nil |
1 Sep 2021 |
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d. PV installation
For PV installations the requirements shall be as follows:
(1) For access to the PV installations on the roof, a portable sturdy or cat/ ship ladder to the roof access shall be provided.
(2) All access hatches, if provided, shall be readily accessible from the roof. The access hatch opening shall have a minimum clear width of 1m in diameter.
(3) A clearance of 1m around the access/ hatch opening shall be provided.
(4) For fire resistance of PV modules, it shall be in accordance with Cl.10.2.1c..
(5) For emergency disconnection of the PV modules, it shall be in accordance with Cl.10.2.1e..
Effective Date: 1 Mar 2022
Amendment History
| 9.1.1d. |
1 Sep 2021 |
1 Mar 2022 |
Revised/ Clarification |
Nil |
1 Sep 2021 |
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