3.1 Materials used in fire-resisting divisions
shall be non-combustible or fire-restricting as verified in accordance
with part 1 or 10 of this annex, respectively.
3.2
Part 3 of
this annex is also applicable to certain constructions such as windows,
fire dampers, pipe penetrations and cable transits.
3.3
Part 4 of
this annex is also applicable where a control system of fire doors
is required to be able to operate in case of fire.
3.4 Where combustible veneers are allowed to be
provided in fire-resisting divisions in conjunction with non-combustible
substrates, the low flame-spread characteristics of such veneers,
if required, shall be verified in accordance with part 5 of this annex.