(1) Generally,-
(a) every room intended for human habitation shall abut an interior or exterior open space or an open verandah, open to such interior/ exterior open space. Open spaces shall be areas forming integral parts of the plot at ground level and shall be open to the sky without any projection or overhang excepting cornices, chajja or weather shades of not more than 0.50 metre width;
(b) every building shall have exterior open spaces comprising front open space, rear open space and side open spaces. The minimum width prescribed for front open space, rear open space and side spaces shall be provided along the entire front, rear and side faces of the building respectively. For this purpose the front of the building shall be that face of the building which faces the means of access of the building and the rear part of a building shall be deemed to be that face of the building which is farthest from the means of access. These provisions shall also be applicable to each individual building separately when a plot contains more than one building. In the case of a corner plot located at the crossing of more than one street or passage, the rear of the building shall be deemed to be that face of the building which is farthest from the widest of all such streets and or passages;
(c) open spaces prescribing to one site cannot be taken for another site. No building shall at any time be erected on any open space prescribed in these rules for a building and form part of the site thereof, nor shall such open space be taken into account in determining the area of any open space required under these rules for any other buildings;
(d) if the front open space is 3.00 metres or more in width a gate Goomti for security purpose may be allowed in the said open space . The covered area of such Goomti shall not in any case exceed 3.00 sq. metres and shall not be included in calculation of Ground Coverage.
(2) The minimum front open spaces shall be as follows:- Use of building Height of building Minimum front open space at (metres) ground level at its narrowest part (metres) Residential Upto 14.50 1.80 Assembly/ lnstitutional/ Upto 14.50 3.00 Educational/ Club Commercial having built up Upto 14. 50 4.00 area more than 100 sqm.
lndustrial/ Mercantile Upto 14. 50 5.00 (Wholesale)/Storage Others not specified above Upto 14.50 1.80
Provided that any building on a plot not more than 165 sqm and upto 8.00 m high of buildings should have minimum 1.20 m front open space.
Provided further that for mixed use buildings, the minimum front open space shall be the one applicable for that particular occupancy which gives the highest provision of the minimum front open space in this rule.
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(3) The minimum rear open space shall be as follows:- Every building shall have a minimum rear open space at ground level of a width at its narrowest part of not less than that indicated below:- Height of building (metres) Minimum rear open space at its narrowest part (metres) Up to 8.00 1.00 Above 8. 00 but not more than 10.00 1.20 Above 10.00 but not more than 12.50 2.00 Above 12.50 but not more than 14.50 2.50
(4) The minimum side open space shall be as follows:-
(a) every building shall have minimum side open spaces at ground level of width at its narrowest past of not less than that indicated hereinafter — Minimum side open space at ground level at its narrowest part (metres)Height of building (metres) Side 1 Side 2 Up to 8.00 (G+1) 1.00 1.00 Above 8. 00 but not more than 14.50 1.20 1.20
(b) Notwithstanding anything contained in clause (a) above, the minimum distance across the side open space from every new building, to an existing building with a door or window opening shall be 1.80 metres.
(c) notwithstanding anything contained in clause(a) above, the minimum width of side open spaces for an industrial or storage or mercantile (wholesale) building shall be 3.50 metres;
(d) in the case of a building more than 24.00 metres in depth on a plot abutting any street a passage along the entire depth of the building shall be provided and the minimum width of such passage shall be 4.0 metres.
(5) The interior open space shall be as follows: -
(a) for inner courtyard, - In case the whole of one side or part of at least two sides of every room excepting bath, water-closets and store-room is not abutting either the front, rear or side open spaces, it shall abut an inner courtyard whose minimum width shall be 30% of the height of the building or 3.00 metres whichever is more.
(b) for ventilation shaft, that is to say, for ventilating water closet and bath-room such water closet or bath-room if not opening to front side , rear or interior open space, shall open on to a ventilation shaft, the size of which shall not be less than the values given below:- Minimum area of ventilation shaft (Sq. Minimum W'dth 0fshaft (metres) Height of building (metres) metres) Up to 11.00 1.50 1.00 Above 11.00 but not more than 14.00 3.00 1.20 Note: No chajja shall be allowed in the ventilation shaft unless the width of shaft is
2.40 metres or more.
(c) if there be building, other than boundary wall on not more than three sides of a building the minimum width of such courtyard, shall not be less than 20% of the height of the building or 2.50 metres whichever is more.
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