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4.5 BUILT-UP AREA CALCULATION IN RESPECT OF STRUCTURES HAVING HEIGHTS MORE THAN SPECIFIED.
If the height of a covered structure exceeds that specified in Table-10 under Regulation No. 6.1.2, 50% of such area covered by extra height shall be counted towards Built Up Area. However, in case of unique architectural design, Competent Authority may relax this rule for reasons to be recorded in writing. Buildings for public assembly are exempt from this Regulation.
4.6 BUILDING FEATURES PERMITTED FREE OF FSI
4.6 .1 Without Payment of Premium
The following features of a building wherever present, shall be excluded from the calculation of built up area without paying premium:
a). Areas covered by features permitted in marginal open spaces as listed in Regulation- 5.10.3 and 5.10.4 except covered parking spaces, revas projection other than for staircases and a balcony for residential building.
b). Areas covered by lifts and common staircases and their revas projection of width not less than 1.2 m.
c). Area of fire escape stairways and cantilever fire escape passages according to the Fire Officer's requirements as in Appendix – XVIII.
d). Area under stilts up to a clear height (i.e. between floor and ceiling) of 2.4 m. only.
e). Area under structures like Bio-gas plants, effluent water treatment plants, solar water heating system, sewage treatment plants, Air conditioning Plant rooms, Electric Sub-stations etc.
f). Refuge area as provided in Regulation 6.27.
g). Fire escape passages in the case of industrial and public assembly buildings up to a width of 2 m.
h). Areas covered by Lofts [vide Regulation - 6.8], Meter rooms [vide Regulation-6.23], Porches / Canopies [vide Regulation 6.19], if provided in accordance with these Regulations.
i). Basement if used for vehicular parking and essential machinery installations mentioned in Regulation No.6.4.2.3.
j). Dish antenna or communication tower used for telecom or ITE purpose.
4.6.2 Building Features Permitted Free of F S I on Payment of Premium
The following features shall be excluded from the calculation of built up area on payment of premium as stipulated in Appendix – X.
a) Basements for permitted uses other than 4.6.1.(h) above and lock up Garages
b) Balconies and otlas either open or enclosed, to the extent of 10% of built up area (BUA) of respective floor.
c) Office room to the extent of 15 sq. m. of a co-operative housing society or apartment owners' association and one toilet for servants
d) Structures permitted in the recreational open spaces under Regulation No.5.5.3.5.
4.7 FSI FOR RECONSTRUCTION OF DILAPIDATED/UNSAFE TENANTED BUILDINGS
In the case of proposals involving reconstruction of dilapidated /unsafe buildings, wholly or in part, the maximum permissible FSI shall be equal to the FSI already consumed by the tenants to be rehoused plus the FSI otherwise permissible under these Regulations subject to following conditions:
i) Maximum FSI shall be 2.0
ii) All such tenants shall be rehoused in the reconstructed buildings
iii) Structure is authorisedly constructed prior to 27th January 1970
4.8 FSI FOR RECONSTRUCTION OF DAMAGED/ DESTROYED/ COLLAPSED BUILDINGS DUE TO NATURAL CALAMITY
In the case of proposals involving reconstruction of a building or a part of a building which has ceased to exist or damaged or destroyed or collapsed due to accidental fire, earthquake or similar natural cause beyond the human control, the maximum permissible FSI shall be equal to the FSI already consumed by the tenants to be rehoused, plus the FSI otherwise permissible under these Regulations subject to following conditions:
i) Maximum permissible FSI shall be 2.0
ii) All such tenants shall be rehoused in the reconstructed buildings.
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