Standard for Fire Safety in Rapid Transit Systems - Singapore Civil ...

(c) Where there are habitable floors directly above a
trainway within an above-ground station, the fire
resistance of elements of structure around the trainway
within the station shall be not less than 4 hours as
shown Diagram 2.3.3.1(c).
2.3.3.2 Nothing in Cl.2.3.3.1 shall apply to any part of any external
wall which is non-loadbearing and may, in accordance with
Cl.2.3.5 be an unprotected area.
2.3.3.3 In the case of a station consisting of a first storey and one or
more basement storeys, nothing in Cl. 2.3.3.1 shall apply to
any element of structure which forms part of the first storey
and consists of:
(a) A structural frame or a beam or column, provided that
any beam or column (whether or not it forms part of a
structural frame) which is within or forms part of a
wall, and any column which gives support to a wall or
gallery, shall have fire resistance of not less than the
minimum period, if any, required by this standard for
that wall or gallery, or
(b) An internal loadbearing wall or a loadbearing part of a
wall, unless that wall or part is, or forms, part of a
compartment wall or a separating wall, or forms part of
the structure enclosing a protected shaft or supports a
gallery, or
(c) Part of an external wall which does not support a
gallery and which may, in accordance with Cl.2.3.5 be
an unprotected area.
2.3.3.4 The interpretation and application of Cl.2.3.3 shall be as
follows:
(a) Subject to the provisions of sub-cl. (b) and any other
expressed provision to the contrary, any reference to a
station of which an element of structure forms a part
means the station or (if the station is divided into
compartments) any compartment of the station of
which the element forms a part, and
Exemption for
nonloadbearing
external walls
Exemption for
single storey
structure
Interpretation
and
application of
Cl. 2.3.3
Standard for Fire Safety in Rapid Transit Systems 55