Building Components

Elements of Building Construction

Syllabus
• Planning:- Elementary principles and basic
requirements of a building planning, layout of
a residential buildings.
• Construction:- Classification of building
based upon occupancy and structure, Design
loads, Common building components, their
functions, and nominal dimensions. Elements
of building drawing. Introduction to bylaws.

Construction
Part-1
Elements of Building Construction

Common Building Components
Basic
Building
Components
Super
Structure
Substructure

Super Structure
• The superstructure is that part of the building which is
above the ground and which serves the purpose of
building’s intended use.
• It includes
• Plinth
• Wall and columns
• Beams
• Arches
• Roofs and slabs
• Lintel and arches
• Chajjas
• Parapet
• Steps and stairs

Substructure
• The substructure is the lower portion of the
building, which is located below ground level
which transmits the load of the superstructure
to the sub soil.
• it includes
• Foundations

Nominal Dimensions Of Building
Components
Building component Nominal Dimension
Plinth (Height) 30,45,60,75,90 cm
Wall thickness
Partition wall
Load bearing wall
10 cm
20, 30,40 cm
Lintel (thickness) 15 cm
Chajja Projections 30,45,60,75,90 cm
Slab thickness 0,1 to 0.15 m
Parapet wall thickness 10 cm
Parapet height 1 m
Door width 0.8, 0.9, 1.0, 1.2 m
Door height 1.8, 2.0, 2.1 m
Sill height 0.07 to 0.1 m
Lintel height 2.0 m from floor level

Nominal Dimensions Of
Building
ComponentsBuilding components Nominal dimensions
Column size Square 20 x 20, 30 x 30 cm
Rectangular 20 x 30 cm
Circular 20Ф , 30Ф
Column footing 1x 1 x 1 m below ground
Depth of beam 30, 45, 60 cm
Steps No of risers= Height of Ceiling + Slab
thickness/ Riser Height
No of treads= No of risers-1
Riser height 15 to 20 cm
Tread width 25,30,35 cm
Width of steps Minimum 1 m

Foundation
• The basic function of foundation
• To Transmit the load from building to the
subsoil, in such a way that
• settlement are within permissible limit
• the soil does not fail in shear
• Reduce the load intensity
• Even distribution of load
• Provide level surface

Types Of Foundation
• Foundations may be broadly classified as
• (a) shallow Foundation
• (b) Deep foundation
• (a) Shallow Foundation
 Spread footing
 Combined footing
 Strap Footing
 Mat Foundation or Raft Foundation

Types of Foundation
• Spread Footing:- Spread footings are those which
spread the super-imposed load of wall or column over
larger area. Spread footing support either column or
wall
• It may of following kinds
• Single footing for column
• Stepped footing for a column
• Sloped footing for a column
• Wall footing without step
• Grillage foundation

• Combined Footing: A spread footing which
supports 2 or more columns is termed as combined
footing. The combined may be of following kinds
• Rectangular combined footing
• Trapezoidal combined footing
• Combined wall footing

• Strap Footing: If a Independent footing of two
columns are connected by a beam, it is called a strap
footing. A strap footing may be used where the
distance between the column is so great that
trapezoidal footing becomes quite narrow. The strap
does not remain in contact with soil and does not
transfer any pressure to the soil.

• Raft Foundation:- A raft Foundation is a
combined footing that covers the entire area
beneath a structure and support all the wall
and column.
• They are used in areas where the soil masses
contains compressible lenses or the soil is
sufficiently erratic so that differential
settlement would be difficult to control

Deep Foundation
• Deep foundation may be of following types
• Pile foundation
• Pier
• Well or caissons

• Pile Foundation:- Pile Foundation is that type of
foundation in which the loads are taken to a low level
by means of vertical members which may be timber,
concrete or steel. Pile foundation may be adopted
when no firm bearing strata is available and the
loading is uneven.
• Piles may be of following types
• End bearing piles
• Friction Pile
• Compaction pile

• Pier Foundation: A Pier foundation consist of
cylindrical column of large diameter to support
and transfer large superimposed load to the
firm strata below.
• Generally, pier foundation is shallow in depth
than the pile foundation.

• Well Foundation: Well Foundation or Caisson
are box like structures which are sunk from the
surface of either land or water to the desired
depth. They are much larger than the
pier foundation or drilled caissons. Caisson
foundations are used for major foundation
works like
• Bridge piers
• Docks
• Large water front structure such as pump
house.

Super Structure
• Plinth: Plinth is that part of
the building between
surrounding ground surface
and floor space immediately
the ground.
the entry
above
resists
water entry inside
Plinth
of rain
the
building, entry of animals ,
insects & Rodents.
• General plinth height is 45,
60, 75, 90, 120 cm

• Wall: The walls are building blocks of bricks or
stones. They divide the building space into
various
support
space
slabs
into various
and beams.
rooms.
They
They
safely
transmits the loads coming on them from
beams and slabs to the foundation. They
provide privacy and protection against heat,
They offercold, rain , noise, dust winds.
resistant to firewalls may be of
• Brick masonry
• Stone masonry

• Columns are vertical members along which
beams and slab /roof is supported They are
square, rectangular and circular in shape in
C/S
• Floor: A floor is a plane area to support
occupants, furniture's, and equipments.
• Roof: The upper most part of the building
constitutes the roof. The Slab and roof
encloses the space and offers protection from
rain, heat, snow, wind, sound, fire. Slabs are
10,12,15 cm the.

Doors And Windows
• A door provides a connecting link between
rooms, allowing easy free movement in the
building. Window are opening provided in
walls. Doors and windows provide lighting and
ventilation. The provide resistance to weather,
sound and heat. They provide security and
privacy

Sizes of Doors
• For Residential Area
• Internal doors 0.9 x 2.0 m
• External doors 1.2 x 2 m
• Door for bath and w.c. 0.75 x 2.0 m
• Industrial Buildings
• Width 1.5, 2.0, 2.5 m
• Depth or height 2.0 m, 2.5 m

Types of Doors
• Battened and ledge door
• Battened and braced door
• Battened and framed door
• Battened, ledge, and framed
door
• Framed and paneled door
• Glazed door
• Flush door
• Louvered door
• Wire gauged door
• Revolving door
• Sliding door
• Swing door
• Collapsible steel door
• Rolling shutter door
• Mild steel sheet door
• Hollow metal door
• PVC door

Battened, Ledge, And Framed
Door

Sizes of Windows
• Sizes of Windows: 0.6, 0.75, 0.9, 1.0, 1.2, 1.5,
1.8m
• Depth: 0.6 0.75, 0.9, 1.0, 1.2, 1.5, 1.8 m
• Size of Ventilator: Width= 0.3, 0.45, 0.6, 0.75,
0.9 m

Types of Windows
• Fixed
• Pivoted
• Double hung
• Sliding
• Casement
• Sash
• Louvered
• Metal
• Bay
• Corner window
• Dormer
window
• Gable window
• Lantern
• Skylight

Sills
• Sills are lower portion of window and
ventilator opening

Steps and Stairs
• Steps and stairs are meant to provide access
between different levels. Stairs should be
• In one flight maximum 8 steps should be
provided for more than 8 steps it is
properly located to provide easy access and fast
services to the building.
recommended to provide them with lending.
• Generally for residential building width of stair
is
1.0 m and 1.2 m
• No of risers= Total height of floor/ Height of riser
• No of tread= Number of riser-1

Beams
• Beams are horizontal members above which
the slabs are provided. The beams are instead
supported on walls and columns
• They are generally 20, 39, 45, 60 cm thick and
deep members as per structural design

Lintels And Arch:
• Lintel is a horizontal member which is placed
across the opening.
• An arch is normally a curved member comprising of
wedge shaped building blocks holding each other
with mutual pressure.

Chajjas:
• Chajjas are provided on external wall opening
to get protection from rain, snow and heat.
They are weather sheds. Their thickness
tapers from 100 to 75 mm and projection is 30,
45, 60, 75, 90 cm

Parapet
• Parapet: Parapet is generally 10 cm thick
partition wall constructed above slab to
enclose the terrace open to sky. Thickness is
10 to 15 cm height is 1.0 m to 1.2 m

Different Types Of Buildings
• Buildings are classified based upon its occupancy and
structure
• Building are classified based upon occupancy as
• Residential Building
• Educational Building
• Institutional Building
• Assembly building
• Business buildings
• Mercantile buildings
• Industrial Buildings
• Storage buildings
• Hazardous buildings

• Residential Building: Buildings in which sleeping
arrangements are provided with or without cooking
arrangement. It includes single or multi-
family dwelling, apartments, lodgings,
restaurants, hostels, dormitories and hotels
• Educational building: These Include any building
used for school, college, education purposes.
• Institutional Building: these buildings used for
different purposes, such as medical or other
treatment. They include hospitals, sanatorium, jails,
asylum

• AssemblyBuildings: These are the buildings
where group of peoples meet or gather for
amusement, social, religious, political, civil, travel
and similar purposes. E.g. theatres, motion
pictures, houses, assembly halls, restaurants
assembly halls.
• Business buildings: These buildings are used for
transactions of business, for keeping accounts and
for similar other purposes.
• Mercantile building: These building are used as
shops, stores, market for display and sale of
merchandise either wholesale or retail, office,
shops, storage services.

• IndustrialBuildings:These are buildings where
products or materials of all kinds and properties
are fabricated, assembled, manufactured or
processed
• Storage Buildings: these buildings are used
primarily for the storage or sheltering of goods,
wares or merchandise, vehicles and animals,
grains
• Hazardous Buildings: These buildings are used for
the storage, handling, manufacturing or
processing of highly combustible or explosive
materials or products

Classification Based On Structure
• Load bearing Structure
• Framed structure
• Load Bearing Structures: In this type of
structures loads from roof slab or trusses and
floors are transmitted through walls to the firm
soil below the ground .This type of structures are
adopted where hard strata are available at
shallow depth. The structural elements like
beams, slabs rests directly on the walls.

• Framed Structures: Reinforced cement concrete
structures are the most common type of
construction today. They consist of a skeleton of
beams & columns. The load is transferred from
beams to the columns and column intern transfer
the load directly to the sub soil through footing.
Framed structures are suitable for multi-storey
building subjected to variety of extreme loads like
compressive, tensile torsion, shear along with
moment.
• The open spaces in the skeleton are to be
filled with brick walls or glass panels.

Types of Loads
• Various loads are taken into account while
designing the foundation of a structure.
• Dead loads;
• Live load;
• Wind loads;
• Earthquake loads;
• Erection loads; and

• Dead Load: Dead load comprises of the weight of all
walls, partitions, floors and roofs including all other
permanent construction in the building
• Wind load: It is considered as basic wind pressure
pressure in thewhich is equivalent static
direction of the wind
• Wind pressure= k v2
• Where k= co-efficient, 0.006
• V= wind velocity
• Wind pressure always acts in the vertically
exposed surface of the walls and columns.

• Snow load: Actual load due to snow depends
upon the shape of the roof and its capacity to
retain the snow. The load due to snow may be
assumed to be 2.5 kg/m3 per cm depth of snow
• Earthquake load: an earthquake load produced
waves in every possible direction below ground.
As per intensity or scale of earthquake, jerks and
shocks are acting on the earth. As per the location
of the building in the prescribed zone of
earthquake coefficients of earthquake loads are
decided.

• Live Load: Live Loads consist of moving or
variable loads due to people or occupants,
their furniture, temporary stores, machineries.
• Erection Load: All loads required to be
carried by the structure or any part of it due to
storage or positioning of construction material
and erection equipment including all loads due
to operation of such equipment, shall be
• considered as ‘ erection loads

Elements of
Building
Construction
Part-2
Planning

Planning
• Elementary Principles and basics of a building
planning, layout of residential and industrial
buildings

Principles And Building Planning
• The term planning of a building refers to mean
the arrangement of all the units of a building
on all the floors and at all the levels.
• There are certain general principles which as a
engineer should bear in mind while planning a
building.

The General Principles Are
• Aspect
• Prospect
• Privacy
• Grouping
• Roominess
• Flexibility
• Furniture requirements
• Circulation
• Elegance
• Economy
• Sanitation

Aspect
• Aspect: different rooms of the buildings are placed and located accordingly to the
functional utility in such a way that maximum advantage of natural elements like
sun, wind, can be obtained. To obtain sufficient sunlight inside the room windows
are placed in external walls
• Kitchen aspect: Kitchen should have window in east, because morning sun kills
the germs. So kitchen should have eastern aspect.
• Bed room aspect: Bed room is a unit of residential building generally used in night
time, for sleeping so evening sun rays, which are cool in nature should enter the bed
room to create cheerful atmosphere. So bed room should have western aspect,
south-western or north-western aspect.
• Drawing room aspect: It is a room which is used by the occupants for maximum
hours of the day. To achieve good sunlight it should be placed in south or south-
east or north-east. Windows should be provided in external walls
• Study room aspect: Windows in this room should be in northern side to obtain
sufficient light throughout the day. So aspect of this room is north.
• Verandah: there should be sufficient light in the above unit throughout the day so
they should be placed with opening in north-direction.

Bed Room (Western South Western,
North Western Aspect)

Drawing Room ( South East or North
East Aspect)

Prospect
• It Is Related With The Views As Seen Of The
Outside From Doors And Windows In The External
Wall. For Pleasant Atmosphere View Of A Garden, Hill
And A River, etc Is A Good Prospect. Towards These
Objective Doors And Windows Should Be Provided In
The External Wall Of The Building. Undesirable Views
Like A Small Nallah, Slum Area, Drainage Disposal
Unit, Garbage Collection Centers Should Be Concealed
By Not Providing Windows In That Direction
• Prospect Of Living Room Should Be Toward The Main
Road To Keep Control On The Plot. Prospects Of Bed
Should Be On The Rear Side Of The Building So That
To Avoid Disturbance Due To Noise.

Privacy
• This is very important factor to be considered while
planning both residential as well as public building
Privacy of one room from another in a building as well
as privacy of the whole building with other building should
be achieved.
• The privacy of residential building as a whole can be
achieved by planting trees, and by providing entrance. Even
the compound wall of required height can be constructed to
provide privacy of trespassers.
• Privacy in different rooms can be achieved by providing
doors in such a way that minimum view of room is seen
when shutter is opened. Privacy is very important in bed
rooms and wick. and the view of bed room should not be
visible from any other room.

Grouping
• It is the arrangement of various rooms with respect to their
functions, In case of residential building to achieve
maximum efficiency of the plan the grouping should be
done as follows
• Verandah should be the first unit after the entrance of the
house
• Living room and dining room should be close next to
verandah
• Kitchen and dining should be close to each other
• Sanitary arrangements should be close to bed rooms.
• Staircase should be approachable from each room
• Passages connecting various rooms should be well lighted
and ventilated

Roominess
• This principle of planning is directly related to
dimensions of the room. A rectangular room is
found more convenient as compared to a square
room of the same size. Hence length to width
ratio should be 1.2 to 1 or 1.5 to 1 if the ratio is
greater it will give a tunnel effect to the room.
Height of doors and windows, ceilings, floorings,
color treatment also affect the roominess of the
building unit. Light color give effect of more
space whereas dark color makes the room look
smaller. Height of ceiling should be low as more
height gives a feeling of a cave.

Flexibility
• Flexibility means a room which was planned
for one function can be used for other, if so
required. If rooms are big enough and are
having a minimum width of 3m are more
flexible and even the activities of various
rooms can be exchanged.

Furniture Requirement
• One of the most important requirement of a
building planner, is to know how much space
is needed by each function in a particular
building. The room sizes for a particular
function can be completed on the basis of
permanent furniture's to be used in the room.
Hence while planning a building furniture
arrangement must be shown.

Circulation
• Circulation is the access into or out of a room. It is the
internal movement inside the building and the area
earmarked for it.
• Circulation area should be straight, short, bright, lighted .
• Circulation should nor affect the privacy of a room nor
interfere with the utility space
• Circulation in a building is of two types
• Horizontal circulation and vertical circulation
• Circulation within a floor is called horizontal circulation
• And circulation between different floor is called vertical
communication.

Lighting
• It can be natural light as that obtained from the
sun during the day or artificial light. Adequate
illumination is essential in day to day activities
to execute the safety and comfort and
efficiency
• Good visibility is a must for accident
prevention, comfortable watching and reading
to reduce fatigue, avert confusion, and
efficient security.

Elegance
• Elegance refers to the planning of elevation
and layout of the plan to give an impressive
appearance to the building. The proper
width, height, location of doors and windows,
materials employed in construction of exterior
walls etc create elegance. The result of
elegance is aesthetics of building

Economy
• Building planning should be carried out in
the financial limit of the client. An engineer
should know in advance, the client intends to
spend for the building and accordingly
material of construction, finishing items, stage
of construction should be suggested. By
estimation proposed amount should be derived
and as per that progress should be followed to
avoid delay in work progress

Sanitation
• Provision for cleanliness, lighting and ventilation
in sanitary units avoid growing of bacteria's, and
spread of diseases and give hygienic condition. In
bath and w.c. glazed tiles and dado should be
provided on wall to maintain clean condition. The
ventilator in bath, w.c. permit sunlight and air
collation to maintain hygienic condition.
flooring material should be easy to clean,
skirting's should be provided in rooms. Bath tubs,
w.c., kitchen sink should be made of ceramic
material to maintain clean easily.

Building By Laws
• During planning and construction of any
building, certain regulations are laid by
Municipal bodies, authorities, and other
government departments as town planning so
as to prevent haphazard development of city
such rules and regulations are called as
building bylaws.

Objectives of Building by laws
• Building bylaws allow disciplined and systematic
growth of buildings and towns and prevent haphazard
development
• Building bye-laws protect safety of public against
fire, noise, health and structural failure.
• They provide proper utilization of space, hence
maximum efficiency in planning
• They provide health, safety, and comfort to
peoples living in the building.

Different By Laws
• Building frontage:- It is the margin to be left
beyond the extreme edge of the road to the front
of the building line.
• It depends upon Status of area, Nature of Road.
• Residential building requires minimum clearance.
Public building requires more clearance.
• The purpose of this frontage is to facilitate
• Widening of road in future
• More sight distance at corners
• Minimum sound pollution

Frontage based on type of building
Type of
residential
Building
Plot size m2 Frontage
Detached Building Above 250 12 m
Semidetached Building 125-250 8-12 m
Row type building 50 to 125 4.5 to 8 m

Open spaces
• Open spaces are essential to satisfy the lighting
and ventilation requirement.
• Outer open space: They are additional margins to be
left within the plot to isolate the building from road
and neighboring buildings.
• Inner open space: They are open spaces within
the building. They are needed in heavily
congested area to
• Provide lighting to the interior rooms
• Create inner courtyard

Exterior Open Space
• Exterior open space maybe in front , rear or
sides of the building.
• Front open space: Every building fronting a
street shall have a front space.
Width of street Front open space
Up to 7.5 m 1.5 m
7.5 to 18 m 3 m
7.5 to 18 m 4.5 m
Above 30 m 6.0 m

Rear Open Space
• Every residential building shall have a rear
open space of 3 m and in no case it should be
less than 1.8 m.
• Side open space: Detached building should
have a minimum 3m side open space at both
the sides, whereas semidetached building will
have 3m on one side only.
• The open spaces mentioned are for residential
building up to height 10 m

Minimum standard dimensions of
building elements
• Area requirement
• The limitation of area is achieved by satisfying
floor space ratio. FAR
• Floor space Ratio:
• FSR: Total area covered area of all floor
• Plot area
• It ranges from 1 to 2

Height of Building
• The height of Building are related to FAR and
provision of open space
• The maximum height of building should not
exceed two times the ( width of road + front
open space)

Minimum Sizes Of Rooms
No Name ofRoom Minimum area Minimum sizeof
sides
Minimum Height
1 HABITAT ROOM
BED ROOM
LIVING ROOM
DRAWING ROOM
DINING ROOM
STUDYROOM
9.5 m2 2.4m Should not be less
than 2.75 m
2 KITCHEN 5m2 1.8m Should not be less
than 2.75 m
3 BATHROOM
W.C
1.8 m2 1.2m Not less than 2
m
4 STOREROOM 3m2 Not less than 2.2 m
5 GARAGE 12.5m2 Not less than 2.2 m
6 STAIRCASE The minimum width of
stair is 1.0 m
The minimum clear
head room shall be
2.2m

Sizes of Rooms
• Drawing room: Drawing room should be the very
first room of a house as we enter
• The minimum area should be 15 to 20 sq m
• General sizes: 3.5m x 5.5 m
•
•
5m x 6 m
7 m x 9 m
• Ventilation in Drawing rooms: Minimum
window area should never be less than 10 % of
floor area but 20 % is preferred

• Dining room: It is a place where families take
their breakfast, lunch, dinner.
• Size: 4 m x 3 m
• 4m x 5 m
• 5 m x 6 m
• Kitchen: A Kitchen is a place where food is
prepared and stored for consumption
• Sizes: 1.5 m x 3m
• 3 m x 5 m
• 4 m x 6 m
• Ventilation in kitchen : window area should be at least
15 % of floor area

• Bed room: A man spends major part of the day in
the bed room either sleeping or relaxing.
• A minimum floor area 0f 10 sq m should be
provided
• Sizes: 4 m x 3 m
•
•
•
5 m x 4 m
3 m x 3m
4 m x 4 m
• Ventilation : Minimum window area of 10 % of
floor area.

• Bath and W.C.: Bathroom is a place where inmates take
bath and the waste water is collected and conveyed off
• Water Closet is the place of collection of human discharge
• A minimum floor area of 1.8 sq m
• Floor are of Bath and w.c should not be less than 2.8 m2
with minimum width of 1.2 m
• W.C should have a minimum width of 0.9 m and minimum
length of 1.2 m
• A minimum floor area of 1.1 sq m is to be provided for w.c
• Ventilator of 500 mm x 300 mm is to be provided at a
height of 1.8 from floor area.
• Sizes: 1.5m x 2 m
• 2m x 3 m
• 3m x 4m

• Store Room: It is to store Items like food
grains cylinders, utensils etc.
• Floor area 15 sq m to 20 sq m
• Verandah: It is area open on 1 side, 2 sides or
3 sides.
• Minimum width 1.5 m not greater than 4m
• Minimum Height of verandah 2.1 m

• Pooja Room: Many people perform pooja in
houses. It is Quite calm space to perform
pooja.
• It should be located in N-E corner of the
building
• Sizes : 2.1 m x 2.1 m
• Roughly 4 m2 in area
• Study Room: It is place where study
material are stocked and read
• Area of study room should be 10 m2 to 12 m2

References
Building Planning and Drawing : Dr. N. Kumara Swami
A. Kameswara Rao
Elements of Civil Engineering : Prof R .B. Khasia
Internet Websites

Building Components

Recommended

Recommended

More Related Content

What's hot

What's hot (20)

Viewers also liked

Viewers also liked (20)

Similar to Building Components

Similar to Building Components (20)

More from GAURAV. H .TANDON

More from GAURAV. H .TANDON (20)

Recently uploaded

Recently uploaded (20)

Building Components