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Different classification of buildings
 Agricultural buildings
 Barn
 Chicken coop or chickenhouse
 Cow-shed
 Farmhouse
 Granary , Hórreo
 Greenhouse
 Hayloft
 Pigpen or sty
 Root cellar
 Shed
 Silo
 Stable
 Storm cellar
 Well house
 underground Pit
 Commercial buildings
 Automobile repair shop
 CarWash
 Convention center
 Forum
 Gas station
 Hotel
 Market
 Market house
 Skyscraper
 Shop
 Shopping mall
 Supermarket
 Warehouse
 Restaurant

 Educational buildings
 Archive
 College
o Classroom Building
o Gymnasium
o Students' union
 School
 Library
 Museum
o Art gallery
 Theater (building)
o Amphitheater
o Concert hall
o Cinema
o Opera house
 Boarding Schools
 Government buildings
 Capitol
 City hall
 Consulate
 Courthouse
 Embassy
 Fire station
 Meeting house
 Moot hall
 Palace
 Parliament
 Police station
 Post office
 Prison

 Residential buildings
 Apartment block
 Asylum
 Condominium
 Dormitory
 Duplex
 House
 Nursing home
 Townhouse
 Villa
 Bungalow
 Industrial buildings
 Brewery
 Factory
 Foundry
 Power plant
 Mill
o Watermill
o Wind mill
o Horse mill
o Tide mill
 Military buildings
 Arsenal
 Barracks
 Bunker
o Blockhouse
 Castle
 Citadel
 Fortification


Classification of Building Based on Occupancy
General Classification
All buildings, whether existing or hereafter erected
shall be classified according to the use or the character
of occupancy in one of the following groups:
Group A Residential
Group B Educational
Group C Institutional
Group D Assembly
Group E Business
Group F Mercantile
Group G Industrial
Group H Storage
Group J Hazardous

A) Residential Buildings
These shall include any building in which sleeping accommodation is
provided for normal residential purposes with or without cooking or dining
or both facilities, except any building classified under Group C.
Buildings and structures under Group A shall be further sub-divided as
follows:
Sub-division A-1 Lodging or rooming houses
Sub-division A-2 One or two-family private dwellings
Sub-division A-3 Dormitories
Sub-division A-4 Apartment houses (flats)
Sub-division A-5 Hotels
Sub-division A-6 Hotels (Starred)
a) Sub-division A-1 Lodging or rooming houses — These shall include any
building or group of buildings under the same management, in which
separate sleeping accommodation for a total of not more than 40 persons
(beds), on transient or permanent basis, with or without dining facilities but
without cooking facilities for individuals is provided. This includes ims,
clubs, motels and guest houses. A lodging or rooming house shall be
classified as a dwelling in sub-division A-2 if no room in any of its private
dwelling units is rented to more than three persons.

b) Sub-division A-2 One or two-family private dwellings — These shall
include any private dwelling which is occupied by members of one or two
families and has a total sleeping accommodation for not more than 20
persons. If rooms in a private dwelling are rented to outsiders, these shall
be for accommodating not more than three persons per room. If sleeping
accommodation for more than 20 persons is provided in any one residential
building, it shall be classified as a building in sub-division A-1, A-3 or A-4 as
the case may be.
c) Sub-division A-3 Dormitories — These shall include any building in
which group sleeping accommodation is provided, with or without dining
facilities for persons who are not members of the same family, in one
room or a series of closely associated rooms under joint occupancy and
single management, for example, school and college dormitories,
students, and other hostels and military barracks.

c) Sub-division A-4 Apartment houses (flats) — These shall include any
building or structure in which living quarters are provided for three or
more families, living independently of each other and with independent
cooking facilities, for example, apartment houses, mansions and chawls.
e) Sub-division A-5 Hotels — These shall include any building or group of
buildings under single management, in which sleeping accommodation is
provided, with or without dining facilities for hotels classified up to4 Star
Category.
f) Sub-division A-6 Hotels (starred) —These shall include the hotels duly
approved by the concerned authorities as Five Star and above Hotels.

B) Educational Buildings
These shall include any building used for school, college, other training
institutions for day-care purposes involving assembly for instruction,
education or recreation for not less than 20 students.
Buildings and structures under Group B shall be further sub-divided as
follows:
Sub-division B-1 Schools up to senior secondary level
Sub-division B-2 All others/training institutions
a) Sub-division B-1 Schools up to senior secondary level — This sub-
division shall include any building or a group of buildings under single
management which is used for students not less than 20 in number.
b) Sub-division B-2 All others/training institutions — This sub-division
shall include any building or a group of buildings under single
management which is used for students not less than 100 in number.
In the case of temporary buildings/structures which are utilized for
educational purposes, the provisions of 3.2.5.3 shall apply. If residential
accommodation is provided in the schools/institutions, that portion of
occupancy shall be classified as a building in sub-division A-3.

C) Institutional Buildings
These shall include any building or part thereof, which is used for purposes,
such as medical or other treatment or care of persons suffering from
physical or mental illness, disease or infirmity; care of infants,
convalescents or aged persons and for penal or correctional detention in
which the liberty of the inmates is restricted. Institutional buildings
ordinarily provide sleeping accommodation for the occupants.
Buildings and structures under Group C shall be further sub-divided as
follows:
Sub-division C-1 Hospitals and sanatoria
Sub-division C-2 Custodial institutions
Sub-division C-3 Penal and mental institutions
a) Sub-division C-1 Hospitals and sanatoria —This sub-division shall
include any building or a group of buildings under single management,
which is used for housing persons suffering from physical limitations
because of health or age, for example, hospitals, infirmaries, sanatoria and
nursing homes.

b) Sub-division C-2 Custodial institutions —This sub-division shall include
any building or a group of buildings under single management, which is
used for the custody and care of persons, such as children, convalescents
and the aged, for example, homes for the aged and infirm, convalescent
homes and orphanages.
c) Sub-division C-3 Penal and mental institutions— This sub-division shall
include any building or a group of buildings under single management,
which !s used for housing persons under restraint, or who are detained for
penal or corrective purposes, in which the liberty of the inmates is
restricted, for example, jails, prisons, mental hospitals, mental sanatoria and
reformatories.

D) Assembly Buildings
These shall include any building or part of a building, where number of
persons not less than 50 congregate or gather for amusement, recreation,
social, religious, patriotic, civil, travel and similar purposes, for example,
theatres, motion picture houses, assembly halls, auditoria, exhibition halls,
museums, skating rinks, gymnasiums, restaurants, places of worship, dance
halls, club rooms, passenger stations and terminals of air, surface and
marine public transportation services, recreation piers and stadia, etc.
Buildings under Group D shall be further sub-divided as follows:
Sub-division D-1 Buildings having a theatrical or motion picture or any
other stage and fixed seats for over 1000 persons
Sub-division D-2 Buildings having a theatrical or motion picture or any
other stage and fixed seats upto 1 000 persons
Sub-division D-3 Buildings without a permanent stage having
accommodation for 300 or more persons but no permanent seating
arrangement.
Sub-division D-4 Buildings without a permanent stage having
accommodation for less than 300 persons with no permanent seating
arrangement.

Sub-division D-5 All &her structures including temprory structures designed
for assembly of people not covered by sub-divisions D-1 to D-4, at ground
level.
Sub-division D-6 Buildings having mixed occupancies providing facilities
such as shopping, cinema theatres, and restaurants.
Sub-division D-7 All other structures, elevated or underground, for assembly
of people not covered by sub-divisions D-1 to D-6.
a) Sub-division D-1 — This sub-division shalllude any building primarily
meant for theatrical or operatic performances and exhibitions and which
has a raised stage, proscenium curtain, freed or portable scenery or
scenery loft, lights, motion picture houses, mechanical appliances or other
theatrical accessories and equipment and which is provided with fixed seats
for over 1000 persons.
b) Sub-division D-2 — This sub-division shall include any building primarily
meant for use as described for sub-division D-1, but with fixed seats up to
1000 persons.
c) Sub-division D-3 — This sub-division shall include any building, its
lobbies, rooms and other spaces connected thereto, primarily intended for
assembly of people, but which has no theatrical stage or permanent
theatrical And for cinematographic accessories and has accommodation for
300 persons or more, for example, dance halls, night clubs, halls for

incidental picture shows, dramatic, theatrical or educational presentation,
lectures or other similar purposes having no theatrical stage except a
raised platform and used without permanent seating arrangement art
galleries exhibition halls, community halls, marriage halls, places of worship,
museums, lecture halls, passenger terminals and Heritage and
Archeological Monuments.
d) Sub-division D-4 — This sub-division shall include any buiIding primarily
intended for use as described in sub-division D-3, but with accommodation
for less than 300 persons with no permanent seating arrangements.
e) Sub-division D-5 — This sub-division shall include any building or
structure permanent or temporary meant for assembly of people not
covered by sub-divisions D-1 to D-4, for example, grandstands, stadia,
amusement park structures, reviewing stands and circus tents.
f) Sub-division D-6 — This sub-division shall include any building for
assembly of people provided with multiple services/facilities like shopping,
cinema theatres and restaurants, for example, multiplexes.
e) Sub-division D-7 — This sub-division shall include any building or
structure permanent or temporary meant for assembly of people not
covered by D-1 to D-6, for example, underground or elevated railways.

E) Business Buildings
These shall include any building or part of a building which is used for
transaction of business (other than that covered by Group F and part of
buikhngs covered by , for keeping of accounts and records and similar
purposes, professional establishments, service facilities, etc. City halls, town
halls, court houses and libraries shall be classified in this group so far as
the principal function of these is transaction of public business and keeping
of books and records.
Business buildings shall be further sub-divided as follows:
Sub-division E-1 Offices, banks, professional establishments, like offices of
architects, engineers, doctors, lawyers and police stations.
Sub-division E-2 Laboratories, research establishments, libraries and test
houses.
Sub-division E-3 Computer installations.
Sub-division E-4 Telephone exchanges.
Sub-division E-5 Broadcasting stations and T.V. stations.

F) Mercantile Buildings
These shall include any building or part of a building, which is used
as shops, stores, market, for display and sale of merchandise, either
wholesale or retail.
Mercantile buildings shall be further sub-divided as follows:
Sub-division F-1 : Shops, stores, departmental
stores markets with area up to 500 mz.
Sub-division F-2 : Shops, stores, departmental
stores markets with area more than 500 mz
.
Sub-division F-3 : Underground shopping centres.
Storage and service facilities incidental to the sale
of merchandise and located in the same building
shall be included under this group.

G Industrial Buildings
These shall include any building or part of a building or structure, in which
products or materials of all kinds and properties are fabricated, assembled,
manufactured or processed, for example, assembly plants, industrial
laboratories, dry cleaning plants, power plants, generating units, pumping
stations, fumigation chambers, laundries, buildings or structures in gas
plants, refineries, dairies a,d saw-mills, etc.
Buildings under Group G shall be further sub-divided as follows:
Sub-division G-1 Buildings used for low hazard industries.
Sub-division G-2 Buildings used for moderate hazard industries.
Sub-division G-3 Buildings used for high hazard industries.
The hazard of occupancy, for the purpose of the Code, shall be the relative
danger of the start and spread of

What is meant by carpet area, built-up area
and super built-up area?
 Carpet area is the area enclosed within the walls, actual area to
lay the carpet.
This area does not include the thickness of the inner walls
 Built-up area is the carpet area plus the thickness of outer walls
and the balcony.
 Super built-up area ‘Saleable’ Area is the built up area plus
proportionate area of common areas such as the lobby, lifts
shaft, stairs, etc. The plinth area along with a share of all
common areas proportionately divided amongst all unit owners
makes up the super built-up area.
 Plinth Area = Carpet Area + Wall thickness

 Canopy — A projection over any entrance.
 Terrace — Open area without roof, attached to the main unit that
buyer gets exclusive rights to use and resell (with the main unit).
Open areas with slab at least double the height of the floor are
also considered terrace area. FSI is not applicable to terrace
areas.
 Plinth — The portion of a structure between the surface of the
surrounding ground and surface of the floor, immediately above
the ground.
 Plinth Area — The built up covered area measured at the floor
level of the basement or of any storey.
 Building Line — The line upto which the plinth of a building
adjoining a street or an extension of a street or on a future street
may lawfully extend. It includes the lines prescribed, if any, in any
scheme. The building line may change from time-to-time as
decided by the Authority.

 Habitable room
• Floor area of habitable room shall be less than 9.5 sq.m having
the min. width of 2.4 m.
• In case of building having two room , one of this shall not be less
than 9.5sq.m. and other not less than 7.5 sq.m.
• Height of habitable room shall be 2.75m(measured from floor to
lowest point of ceiling.
• In case of air conditioned room a height of not less than 2.4 m.
• The min. head room under beam shall be 2.4m.
 Pressurization — The establishment of a pressure difference
across a barrier to protect a stairway, lobby, escape route or
room of a building from smoke penetration.
 Pressurization Level — The pressure difference between the
pressurized space and the area served by the pressurized escape
route, expressed in Pascal's (Pa).

 Floor Space Index - This is ratio of land to carpet area. Generally
it is 1 for residential plots (much less for agricultural land) For
example, if FSI is 1, and land area is 3000 sq ft, then total carpet
area on that land cannot exceed 3000 x 1 = 3000 sq ft. It should
be noted that FSI is not applicable to terraces, balconies. Also,
this definition is provided for your information, enforcement of
FSI is taken care of by local authorities, and buyer should not
worry about it (unless there are allegations against the builder of
misusing FSI).

 Dry Riser — The dry riser is
the opposite of a "wet
riser" or "wet standpipe"
system. A dry riser is a
main vertical pipe intended
to distribute water to
multiple levels of a building
or structure as a
component of
the fire suppression
systems. An arrangement
of fire fighting within the
building by means of
vertical rising mains not
less than 100 mm internal
diameter with landing
valves on each floor
landing which is normally
dry but is capable of being
charged with water usually
by pumping from fire
service appliances.

 Wet Riser — An arrangement for fire fighting within the building by
means of vertical rising mains not less than 100 mm nominal diameter
with landing valves on each floor landing for fire fighting purposes and
permanently charged with water from a pressurized supply.
 Down-comer — An arrangement of fire fighting within the building by
means of down-comer pipe connected to terrace tank through terrace
pump, gate valve and non-return valve and having mains not less than
100 mm internal diameter with landing valves on each floor/landing. It is
also fitted with inlet connections at ground level for charging with water
by pumping from fire service appliances and air release valve at roof level
to release trapped air inside.
 Fire Separation — The distance in metres measured from the external
wall of the building concerned to the external wall of any other building
on the site, or from other site, or from the opposite side of street or other
public space for the purpose of preventing the spread of fire.

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Ctc assignment

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