110. High rise building.- For the purposes of this Chapter high rise building means a building having more than four floors and or 15 metres of height from ground level.

111. Provisions to apply as modified for high rise buildings'- In the case of high rise buildings, the provisions in these rules elsewhere shall apply subject to modification in this chapter.

112. Staircase.- (1) Every high rise building shall have at least two staircases.

(2) The height of the handrail in the staircase shall not be less than 90 cms. and if balusters are provided no gap in the balusters shall be more than 10 cms wide.

113. Guard rails or parapets.- Every slab or balcony overlooking any exterior or interior open space which are 2 metres or more below shall be provided with parapet walls or guard rails of height not less than 1.20 metres and such guard rails shall be firmly fixed to the walls and slabs and may also be of blank walls, metal grills or a combination of both.

Provided that if metal grills are used they shall not be made of continuous horizontal members to prevent climbing on them:

Provided further that guard rails shall not be made of glass or any similar material which are not reinforced to prevent breaking.

114. Fire escape stairway.- (1) Every high rise building shall be provided with a fire escape stairway.

(2) Fire escape stairway shall be directly connected with public or common areas on all floors and shall lead directly to the ground.

(3) At least one side of the stairway shall be an external wall either with large openings or with break open glass to facilitate rescue operations during an emergency.

(4) External fire escape staircase shall have straight flight not less than 75 cm wide, with 20 cm treads and risers not more than 19 cm. the number of risers shall he limited to 16 per flight.

(5) The height of handrails shall be not less than 100 cm and not more than 120 cm.

(6) The use of spiral staircase as external fire escape stairway shall be limited to buildings with height not exceeding 10 metres.

(7) A spiral fire escape stairway shall be not less than 150 cm in diameter and shall be so designed as to give adequate headroom.

115. Ducts.- Every opening provided to ducts from the interior of a building shall be closed with strong materials.

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117. Open space for fire fighting.- Every high rise building, if it does not abut on two or more motorable roads, shall be provided with a minimum of 5 metres wide open space on any one of its sides contiguous to the road abutting it to facilitate fire fighting:"

Provided that if a road is available on the side which can be made motorable by providing sufficient open space to make its width to not less than 5 metres wide and space on that side is kept open by not constructing any compound wall, fence or structure then no separate open space as specified above need be provided.

118.Lift for residential apartments.- Every high rise apartment building having more than 16 dwelling units shall be provided with at least one lift capable of carrying a stretcher:

Provided that if only one lift is required for the building as per the rule 48, that lift shall be one capable of carrying a stretcher.

119. Parapets to terrace floor.- Where access is provided over the terrace floor or to the terrace floor, the edges of the terrace floor shall be provided with parapet walls made of stable materials to a height of not less than 120 cms.

120. Structural design.- Application for construction or reconstruction or addition or alteration of any high rise building shall be accompanied by one set of structural design, including that regarding seismic forces as per the provisions contained in the National Building Code of India as amended from time to time and drawings and a structural stability certificate prepared and issued by a registered engineer.