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CASE STUDIES


               Clause of the Unified  Provision  from  the Contents of the Clause     Remarks.
               Building Bye Laws   National Building  Code,
               2016               2016 (or earlier)
               8.4.3 k Stairways  Part 4, Fire and Life safety In case of single staircase it shall  Only valid for High Rise
                                                        terminate at the ground floor level  Developments,  which
                                                        and the access to the basement shall  are defined in the UBBL-
                                                        be by a separate staircase. However,  2016 as ‘Any buildings
                                                        the second staircase shall lead  of 15m and above height
                                                        to basement levels provided the  shall be considered as
                                                        same is separated at ground level  high rise building.’ Or
                                                        by either a ventilated lobby with  as per Section 27 and 33
                                                        discharge points at two different  of the Delhi Fire Service
                                                        ends or through enclosures with  Rules, 2010
                                                        fire resistance rating door (Refer
                                                        NBC Part 4, Fire and Life safety) or
                                                        through a fire protected corridor.
               8.4.4 Lifts        Part 4, Fire and Life safety Lifts  Walls  of  lift  enclosures  and  -do-
                                                        lift lobby shall have fire rating of
                                                        two hour; Lift lobby doors in lift
                                                        enclosures shall have fire resistance
                                                        Lifts if communicating with the
                                                        basement, the lift lobby of the
                                                        basements shall be pressurized as
                                                        suggested in clause 8.5.4(f) and
                                                        8.5.4(h)  with  self-closing  door
                                                        with fire resistance  rating For
                                                        Pressurization  Specifications  of
                                                        various  building  components  refer
                                                        NBC Chapter 4 Fire and Life Safety
                                                        Clause 4.10
               8.4.5 Basements    Part 4, Fire and Life safety  The staircase of basements shall  -do-
                                  (most related)        be of enclosed type having fire
                                                        resistance  rating  The  staircase
                                                        shall communicate with basement
                                                        through a lobby with self-closing
                                                        doors with fire resistance rating as
                                                        per relevant NBC code mentioned
                                                        above. For travel distance table 8.2
                                                        given below should be followed. If
                                                        travel distance exceeds that given in
                                                        the table below, additional staircases
                                                        shall be provided. Mechanical
                                                        extractors  shall be designated to
                                                        permit air changes per hour as
                                                        required by NBC Part 4, Fire and
                                                        Life Safety in case of fire or distress
                                                        call Boiler room shall be provided
                                                        at the first basement along the
                                                        periphery wall with fire resistance
                                                        rating








                                                           October, 2022, Volume 23. No.2 - SHELTER     93
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