Fase IV: Determinación de los indicadores de eco-eficiencia

Stairways Doors 1. 2 3 4 1) Residential 25 75 2) Educational 25 75 3) Institutional 25 75 4) Assembly 60 90 5) Business 50 75 6) Mercantile 50 75 7) industrial 50 75 8) Storage 50 75 9) Hazardous 25 10

143. Provision for Staircase :

For all non residential buildings accepting single and multi-family dwellings below 16 m in height, there shall be minimum two staircase. One of them shall be an enclosed stairway and the other shall be on the external walls of buildings and shall open directly to the exterior, or interior open space or to any place of safety. 144. Width provision for staircase:

Not withstanding anything contained in regulations 140, 141 & 142 the following minimum width provision shall be made for staircases flight/corridor.

i) Residential Building -1.2 m.

Note : for row housing with 2 storeys the minimum shall be 0.75 m. ii) Assembly Building like auditorium, theatres and cinemas - 2.0 m.

iii) Institutional Buildings like hospitals upto 10 beds- 1.5 m. More than 10 beds 2.0 m.

iv) Educational Building like schools-1.5 m. v) All other Buildings - 1.50 m.

Provided that the width of the mid-landing/quarter landing should not be more than 1.5 times and the floor landing should not be more than two times of the width of the stair flight.

145. Requirement of Individual Exit at each floor:

The detailed requirements as respect of exits shall be as provided in regulations 146 to 151 (both inclusive)

146. Doorways :

i) Every exit doorway shall open into enclosed stairways a horizontal exit, or a corridor or passageway providing continuous and protected means of egress:

ii) No exit doorway shall be less than 100 cm. in width. Doorway shall be not less than 200 cm. in height. Doorways for the bathrooms, water-closets or stores shall be not less than 75 cm. wide.

iii) Exit doorways of non residential buildings shall open outwards, that is to say, away from the room but shall not obstruct the travel along any exit. No door, when opened shall reduce the required width of stairways or landing to less than 90 cm. Overheads or sliding doors shall not be installed.

iv) Exit door shall not open immediately upon a flight or stair. A landing equal to atleast the width of the door shall be provided in the stairway at each doorway. Level of landing shall be the same as that of the floor which it serves.

v) Exit doorway shall be openable from the side which they serve without the use of a key.

147. Revolving Doors :

i) Revolving doors shall not be used as required exits except in residential business and mercantile occupancies, they shall not constitute more than half the total required door width.

ii) When revolving doors are considered as required exit way, the following assumptions shall be made -

a) each revolving doors shall be credited one-half a unit width and b) revolving doors shall not be located at the foot of stairway. any

stairway served by a revolving door shall discharge through a lobby or foyer.

148. Stair ways :

i) Interior staircase shall be constructed of non-combustible materials throughout.

ii) Interior staircase shall be constructed as a self contained unit with at least one side adjacent to an external wall and shall be completely enclosed. For buildings more than 25m. in height, all staircases shall be enclosed.

iii) A staircase shall not be arranged around a lift shaft unless the latter is entirely enclosed by a material of fire-resistant rating as that for type of constructions itself. For building more than 25 m. in height the staircase location shall be to satisfaction of the Chief Fire Officer, Kalyan Fire Brigade.

v) The minimum width of tread without nosing shall be 25 cm. for an internal staircase for residential building . In the case of other buildings, the minimum tread shall be 30 cm. The treads shall be constructed and maintained in a manner to prevent slipping.

vi) The minimum width an internal staircase shall be 120 cm. subject to provisions of regulations 144

vii) The maximum height of riser shall be 19 cm. in the case of residential buildings and 16 cm. in the case of other buildings. They shall be limited to 12 per flight. “In narrow plots and in high density housing single flight staircase may be permitted and also in case of internal staircase the single fight may be allowed”

viii) Handrails shall be provided with a minimum height of 90 cm. from the centre of the tread.

ix) Floor indicator - The number of each floor shall be conspicuously painted in figures at least 15 cm. large on the wall facing the flights of a stairway or at such suitable place as is distincity visible from the flights.

x) The minimum headroom in a passage under the landing of a staircase shall be 2.2 m.

xi) For building more than 25m. in height higher access to main staircase shall be gained through atleast half an hour fire resisting automatic closing doors placed in the enclosing wall of the staircase. It shall be a swing type door opening in the direction of the escape.

xii) No living space, store or other space including fire risk shall open directly into the staircase.

xiii) External exit door of staircase enclosure at ground level shall open directly to the open spaces or should be reached without passing through any door other than a door provided to form a draught lobby.

xiv) In the case of assembly, institutional or residential occupancies or hotels or industrial and hazardous occupancies, the exit sign with arrow indicating the way to the escapes route shall be provided at a height of 0.5 m. from the floor level on the wall and shall be illuminated by electric light connected to corridor circuits. All exit way marking signs should be flushed with the wall and so designed that no mechanical damage shall occur to them due to moving of furniture or other heavy equipments. Further all landing of floor shall have floor indication boards indicating the number of floor. The floor indication board shall be placed on the wall immediately facing the flight of stairs and nearest to the landing. It shall be of the size not less than 0.5 x 0.5 m.

xv) In case of a single staircase, it shall terminate at the ground floor level and the access to the basement shall be by a separate staircase. Whenever the building is served by more than one staircase one of the staircases may lead to basement level provided the same is separated at ground level by either a ventilated lobby or a cut-off screen wall without opening., having a fire resistance of not less than 2 hours with discharge point at two different ends or through enclosures. It shall also be cut-off from the basement areas at various basement levels by a protected and ventilated lobby or lobbies.

The staircase shall be lighted and ventilated and the minimum size of openings on walls abutting to open space shall be 1.5 sq.m per landing. 149. Fire Escape or External Stairs :

Multistoried, Highrise and special Building shall be provided with fire escape stairs which will be free of F.S.I. and they should conform to the following.

i) They shall not be taken into account in calculating the evacuation time of a building.

ii) All of them shall be directly connected to the ground.

iii) Entrance to them shall be separate and remote from the internal staircase iv) Routes to the Fire escape shall be free of obstruction at all times except for

a doorway leading to the fire escape which shall have the required fire resistance.

v) They shall be constructed of non-combustible material.

vi) They shall have a straight flight not less than 25 cm. wide with 15 cm. treads and risers not more than 19 cm. the No. of risers shall be limited to 16 per flight.

vii) They shall be provided with handrails at a height not less than 90 cm. above the tread.

150. Spiral stairs (fire escape)

The use of spiral staircase shall be limited to low occupant load and to a building of height of 9.0 m. unless they are connected to platforms, such as balconies and terraces to allow escapes to pause. A spiral fire escape shall be not less than 150 cm. in diameter and shall be designed to give adequate headroom.

151. Ramps :

i) Ramps with a slope of not more than 1 in 10 may be substituted for and shall comply with, all the applicable requirements of required stairways as to enclosure capacity and limitingdimensions. Ramps shall be surfaced with approved non-slipping material.

ii) The minimum width of the ramps in hospital shall be 2.25m iii) Handrails shall be provided on both sides of the ramps.

iv) Ramps shall lead directly to outside open space at ground level or courtyards or safe place;

v) For building above 16m. in height, access to ramps from any floor of the building shall be through smoke stop door.

152. Corridors :

i) The minimum width of a corridor shall not be less than 75cm. in the case of 2 storeys row housing residential buildings and 100 cm. in the case of other buildings and actual width shall be calculated based on the provision of regulations 140 to 142 (both inclusive)

ii) In the case of more than one main staircase of the building by a corridor or other enclosed space, there shall be atleast one smoke stop door across the corridor or enclosed space between the doors in the enclosing walls of any two staircases.

iii) a) Exit corridors shall be of a width not less than the total required width of exit doorways leading from them in the direction of travel of the

terior/stairways

b) Where stairways discharge through corridors, the height of the corridors shall not be less than 2.4 m. 153. Refuge Area :

For all buildings exceeding 16 m. in height, refuge areas shall be provided as follows:

a) For floors above 16 m. .. One refuge areas on the floor and upto 24 m. immediately above 16 m. b) For floor above 24 m. .. One refuge area on the floor

and upto 36 m. immediately above 24 m.

c) For floor above 36 m. .. One refuge area per every five floors above 36 m.

154. Fire protection requirements:

Buildings shall be planned, designed and constructed to ensure fire safety and this shall be done in accordance with Part-IV. fire protection of National Buildings code of India unless otherwise specified in these regulations. In the case of buildings referred to in regulation 15 the

buildings schemes shall also be cleared by the Chief Fire Officer KALYAN Fire Brigade.

155. Additional provisions relating to fire protection applicable to certain building :

The additional provisions contained in Appendix “O” relating to fire protection shall apply to buildings more than 16 m. in height referred to in regulation 15.

156. Special requirements for educational buildings/Institutional Buildings/Hospital, Maternity Home, Health Centre, Sanitoria etc. Cinema Theatres (Assembly Halls)/ Mercantile Bldgs.

i) Size of the Classroom .. Ref. Table No. 7 Regulation No. 95 ii) Height of the Classroom .. Ref. Table No. 8 Regulation No. 96 iii) Exit Requirements .. Ref. Table No. 9 & 10 Reg. No. 137 &

152

iv) Parking Requirement .. Ref. Table No. 5 & 6 Reg. No. 86In addition to above every educational building shall be provided with-

i) a tiffin room with a minimum area of 18.0 sq.m. for every 800 students or part thereof

ii) a separate tiffin room for teachers where strength of students exceeds 1000 iii) a room with drinking water facilities for every 300 students or less on each of

the floors

These requirements may be amended by the Commissioner in consultations with the Education Department of the State Government.

157. Special requirements of industrial buildings :

i) In addition to the provision of these regulations, regulations prescribed under the Factories Act, 1948 shall be applicable to the industrial buildings.

ii) In the case of industrial buildings with different operations or processes the different (gaseous, solid, liquid) effluents shall be so treated, subject to the approval or Maharashtra Pollution Prevention Board and Chief Inspector of Steam Boilers and Smoke Nuisance before letting it out on the air, ground or water course.

iii) Requirements as respects exit shall conform to regulations 137 to 152 Table No. 9 & 10

iv) Requirements as respects parking , loading and unloading : Spaces shall conform to regulations 86 Table No. 5 & 6

158. Facilities for physically handicapped persons :

(**EP-14)

(**EP-5)

158A SPECIAL PROVISIONS FOR INSTALLATION OF WATER HEATING SYSTEM :-