3.10.1 Non-combustibility of structure
Every exit staircase, including the treads/risers and landing, shall be constructed of non-combustible materials. The exception is for buildings under PG I, where only the stringer or structures supporting the treads/risers and landing shall be constructed of non-combustible materials.
3.10.2 Compartmentation
E
Explanations & Illustrations
Clause 3.10.2 : Compartmentation
( No illustration )
The exit staircase shall be separated away from all unprotected spaces and openings. For more details of separation distance for unprotected openings, refer to Cl.2.3.3.
Amendment History
| 3.10.2 |
2 Mar 2020 |
2 Mar 2020 |
Clarification |
The exit staircase shall be separated from other parts of the building by a masonry structure or drywall complying with Cl.3.8.7b. which shall have fire resistance for not less than the period required by Cl.3.3 for elements of structure. |
2 Mar 2020 |
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The exit staircase shall be separated from other parts of the building by a masonry structure or drywall complying with Cl.3.8.7b. which shall have fire resistance for not less than the period required by Cl.3.3 for elements of structure. The flight,
landing and supporting structures of the exit staircase shall comply with Cl.3.10.1 and fire resistance rating
is not required.
Doors opening into the exit staircase shall have at least ½-hr fire resistance rating and fitted with an automatic self-closing device.
3.10.4 Finishes
E
Explanations & Illustrations
Clause 3.10.4 : Finishes
Figure 3.10.4
The protecting structure, excluding the external wall, to the staircase shall be constructed of non-combustible materials. Ceiling/wall and floor finishes shall be of non-combustible materials to ensure that the level of safety in the staircase is maintained at all times. The only exception allowed is the handrail material.
Finishes to the ceilings/walls and floors of exit staircase shall be of non-combustible materials.