Chapter 9
Additional Requirements for Each Purpose Group
Chapter 9 sets out purpose-group-specific fire safety requirements that supplement the general provisions in Chapters 1–8. Each clause addresses the unique risks, occupancy patterns, and structural characteristics of one of the nine Purpose Groups (I–VIII plus Others). Requirements range from simplified exit provisions for small houses (PG I) to detailed compartmentation, smoke-control, and sprinkler thresholds for hospitals, factories, warehouses, and assembly buildings. Clause 9.9 covers special building types including conservation shophouses, buildings under construction, engineered timber structures, mega underground developments, and flammable refrigerant restrictions.
Scope: All buildings in Singapore classified under Purpose Groups I through VIII and special building types covered by Clause 9.9. Requirements supplement and, where they conflict with, take precedence over Chapters 1–8.
Source: SCDF Code of Practice for Fire Precautions in Buildings 2023. This is a guidance summary — always verify against the full Fire Code clause text.
Critical points
Buildings with four or more levels (including basements and attics) must have basement levels discharging directly to external space at grade level.
CriticalCl.9.1.1a.(2)For four-or-more-level PG I buildings, the floor immediately over the basement shall be compartmented by compartment walls/floors; internal connections require a fire-rated door at the 1st storey or basement landing.
CriticalCl.9.1.1b.(2)Means of escape may be provided via access staircase(s) for single-occupancy PG I buildings.
ImportantCl.9.1.1a.(3)Unprotected openings in external walls may be assessed based on the single largest room/space, but internal walls enclosing that room/space (except glazing) shall be non-combustible.
ImportantCl.9.1.1cPV installations require a portable/cat ladder to roof, access hatch minimum 1 m clear diameter, 1 m clearance around hatch, and emergency disconnection per Cl.10.2.1e.
ImportantCl.9.1.1dAttic floors may be timber boarding on timber joists provided fire resistance rating of the building/compartment elements of structure is achieved.
NoteCl.9.1.1b.(1)
Compliance thresholds
| Parameter | Value | Condition | Clause |
|---|---|---|---|
| Minimum access hatch clear width (PV installation) | 1 m diameter | PG I buildings with PV installations on roof | Cl.9.1.1d.(2) |
| Clearance around roof access/hatch opening | 1 m | PG I buildings with PV installations | Cl.9.1.1d.(3) |
Interactive decision tree
Is the building a PG I single household dwelling?