Page 119 - Building Regulation Design Guidelines - Architecture Book (Blue Code)

SEcTION: 13 VERTICAL CIRCULATION ELEMENTS SEcTION: 13 VERTICAL CIRCULATION ELEMENTS

13.3 FIRE-EScAPE STAIRcASES 13.3.3 A change in level of egress shall be achieved by an approved
means of egress where the elevation difference exceeds 0.54
13.3.1 Fire-escape enclosure shall require construction, which is fireproof meter.
with sprinklers, alarms, fire detectors and fire resistant doors.
The maximum number of consecutive steps is 20, and minimum
13.3.2 Fire-escape stairs design typess: (figure -48) of 3 steps in the same direction. Maximum riser is 0.18 meter and
1) Spaced exterior stairs. minimum tread is as per E.H.S. regulations.
2) Spaced interior stairs. 13.3.4 Staircases shall be totally enclosed in a fire resisting construction
3) Scissor stairs at core not allowed as per E.H.S.. materials and should lead directly to an exit at the ground floor
level. Doors leading to escape staircases shall be as per section
9.3.

13.3.5 Sufficient natural and mechanical lighting shall be provided with
minimum fresh air vents of 0.5 square meter in area, for each
floor.
Spaced Exterior Stairs 13.3.6 The Fire-escape in all building types shall be clearly marked, and
provided with the minimum number of exits, according to E.H.S.
regulations.
13.3.7 Where an external stairway exists, it shall be ensured that in the
event of fire, it should not be blocked by smoke and flame from
Spaced Interior Stairs the openings (e.g. windows, doors).
13.3.8 The design of staircases shall take into consideration all the
safety and fire fighting conditions and specifications approved
by the E.H.S..
13.3.9 The design of staircases shall be compartmentalized, fireproof
Scissor Stairs at Core and shall provide an exit stair or ramp arrangement for people
during emergency. The compartment shall have fire rated walls,
ceilings and doors with non-slippery flooring that can stand with
high heat temperature.

13.3.10 The staircase location shall be according to the following
requirements:
a) Easily approachable from any part of the building, in which
the farthest point shall not exceed 30.0 meters in distance.
Door Swing Clearance (figure -46)
Usually Required Scissor Stairs Separation
b) It shall be direct, leading to the external access approach
Figure -48 Fire-escape Stairs Types road.

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