E-3.3.1 Habitable Room

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Every dwelling unit to be provided should have at least two habitable rooms. Even if one room house is provided initially it should be capable of adding a new second room in future. In a house of two rooms, first room shall not be less than $9.0 \, m^{2}$ . with minimum width of $2.5 \, m$ and second room shall not be less than $6.5 \, m^{2}$ with a minimum width of $2.1 \, m$ provided the total area of both the rooms is not less than $15.5 \, m^{2}$ . In incremental housing the bigger room shall always be the first room.

PART 3 DEVELOPMENT CONTROL RULES AND GENERAL BUILDING REQUIREMENTS

E-3.3.1.1 To facilitate incremental housing in case of flatted development or otherwise, habitable space at mezzanine level may be permitted. The minimum size of such a mezzanine floor should not be lesser than $6.5 \, m^{2}$ and such a floor should occupy not more than 50 percent of the room area of which it is a part. Such a mezzanine floor should have appropriate openings to facilitate light and ventilation as per E-3.5. Minimum clear height below and above the mezzanine floor should be 2.4 m and 2.1 m, respectively.

As far as possible mezzanine floor should have direct ventilation from the external face of the building. Where this is not possible ventilation through main room may be allowed provided total area of openings in the main room is provided taking into consideration area of mezzanine floor.

Such mezzanine floor may be accessible through the main room by a ladder, whose minimum angle with vertical plane should be $22.5^{\circ}$ . Height of the riser should be less than 250 mm.

E-3.3.2 Water-Closet/Bath Room

a) The size of independent water-closet shall be $0.9 \, m^{2}$ ; with minimum width of $900 \, mm$ .

b) The size of independent bath room shall be $1.2\mathrm{m}^2$ with minimum width of $1\mathrm{m}$, and

c) The size of combined bath and water-closet shall be with minimum width of .

E-3.3.3 Kitchen

The size of a cooking alcove serving as cooking space shall not be less than $2.4 \, m^{2}$ with a minimum width of 1.2 m. The size of individual kitchen shall not be less than $3.3 \, m^{2}$ with a minimum width of 1.5 m. Semi-open spaces with low walls and roof may also be provided for cooking in areas where such provision is suitable with respect to climatic comfort. Provision for smokeless Chullha shall be made in all kitchens considering fuel efficiency and health hazard due to smoke inhalation.

E-3.3.4 Balcony

The minimum width of individual balcony, where provided, shall be 0.9 m. and shall not be more than 1.2 m and it shall not project beyond the plot line and on roads or pathway.

E-3.4 Minimum Height

The minimum height of rooms/spaces shall be as follows:

a) Habitable room : 2.75 m

b) Kitchen : 2.6 m

c) Bath/Water-closet : 2.2 m

d) Corridor : 2.1 m

E-3.4.1 In the case of sloping roofs, the average height of roof for habitable rooms shall be 2.75 m and the minimum height at eaves shall be 2.10 m.

E-3.5 Lighting and Ventilation

The openings through windows, ventilators and other openings for lighting and ventilation shall be as per in accordance with 20.1.2.

NOTE — The windows and other openings shall abut onto open spaces either through areas left open within the plot or the front, side and rear spaces provided in the layouts which shall be deemed to be sufficient for light and ventilation purposes. Wherever ventilation/lighting is provided by means of Jali or grill of any material, total area of openings shall be calculated excluding solid portion of the Jali or grill.

E-3.6 Stairs

The following criteria shall be adopted for internal individual staircase: