The document discusses building bye-laws, which are rules and regulations that govern building construction and planning. The objective of bye-laws is to allow orderly development while ensuring safety, health, and efficient use of space. Bye-laws cover aspects like minimum plot and room sizes, building height limits, setback distances, and more. They aim to provide light, ventilation, and safety for building occupants. Bye-laws apply to new construction as well as renovations and are administered according to the local town planning authority.

1. Building & Townplanning
BUILDINGBYE-LAWS

2. Slum Development as perlaws

3. What is building bylaws?
• The rules and regulation framed by town planning authorities
covering the requirements of building, ensuring safety of the public
through open spaces, minimum size of rooms and height and area
limitation, are known asbuilding bye-laws.
• Rules and regulations which largely regulate the building activity
should be formulated to get disciplined growth of building and the
better planned development of towns andcities.

4. Objective of buildingbye-laws
• pre-planning of building activity.
• allow orderly growth and prevent haphazarddevelopment.
• Provisions of by-laws usually afford safety against fire, noise,health
hazard and structure failure.
• Provide proper utilization of spaceto achieved maximum efficiencyin
planning.
• Theyprovide health, safety and comfort to the people wholive in
building.
• Dueto these bye-laws, each building will have properapproaches,
light, air andventilation.

5. Scopeof building bye-laws
• Aspectsof different type of building inbuilding bye-laws:
1. Building frontage line
2. Minimum plot size
3. Built up area of building
4. Height of building
5. Provision of safety, water supply, drainage, proper light and
ventilation
6. Requirement for off street parkingspace
7. Sizeof structural element

6. Applicability of buildingbye-laws
• New construction
• Additional and alternations to abuilding
• Changing of occupancy of building (residential  educationetc.)
• Development of land isundertaken
• In demolition

7. Different types of area
• Built up area
• Plinth area
• Floor area
• Carpet area
• Superbuilt up area

8. Built uparea
• “The area covered by the building immediately above the plinthlevel”
• It is also known ascoveredarea.
Details to beincluded Details not to beincluded
Basement Steps
Building Structure
Ramps
Swimming pool Soakpit
Reservoir Fountain
Chimney Manhole
Water purification plant Water tank

9. Plinth area
• Means the built-up covered area measured at the floor level of the
basement or of anystorey.
Area to be included in plintharea Area not to be included in plintharea
Area of walls at floor level excluding
plinth offset, external area ofprojecting
cladding.
Additional floor to accommodate seatsin
theatre, assembly hall, or auditorium
Cover of stair Balcony
Curvature provided to improve
appearance
Machine room Platform without cover terraceabove
floor
Portico without cantilever Dome, tower at terrace, spiralstairs

11. Carpet area
• “it is net usable area withinbuilding”.
• Means the net area within a unit of a building excluding walls or
columns, service areas such as washrooms, kitchen and pantry, semi-
open spacessuchasveranda or balcony, and corridors or passages.

12. Floor area
• “It is usable area on eachfloor”
• It including,
• Porch
• Eachflat area in single floor forapartment
• Stairs
• Corridor
• door swingplace

13. Setback distance

14. Permissible SetBack Distance
Width ofroad Permissible setback
Up to 12m 1.5
>12m 2.0
Roadwidth <3m and length <30 m No set- back

15. Advantage of set-back
• Better condition of air, light andventilation.
• At corners it improve visibility and safety fromtraffic.
• Spacefor parking.
• Protection of building from street nuisance likenoise.
• Reducethe danger of fire from neighborhouse.
• It provide privacy inbuilding.

16. Building & controlline
• Theline up to which the plinth of the building adjoining astreet or
road or on future street may lawfully extend is know asbuildingline.
• Building suchascinemas, factories, commercial center which attract
large number of vehicle should be set-back distance apart from the
building line.
• Theline up to which suchbuilding canbe constructed is knownas
control line.

19. Principles underlying building bye-laws
• Classifying the building with unit as a family and mentioning the
requirement.
• Classify rooms according use and then specifying minimum standard of
eachroom with respect to size, height, floor area, ventilation and light.
• Specify height of compound wall and location of gate in wall.
• Controlling projection in marginalspace.
• Insisting on suitable FSIorFAR.
• Specify suitable arrangements with respect to drainage and water supply.
• Specify set-backs, light plan andmargin.
• Specify minimum sizeof plots, theirdimension and figure.

20. Building Bye-lawsFor Residential Area
• Sizeof plots
• Area limitation
• Margin
• Height of the building
• Plinth height
• Minimum area of rooms
• Basement
• Compound wall
• Projection margin
• Parapet wall
• staircase

21. 1.Sizeof plots:
TYPEOF DEVELOPMENT PLOTSIZE FRONTAGE
Detached Building >250 m2 Above 12 m
Semi-detached building 125-250 m2 8-12 m
Rowtype building 50-125 m2 4.5 to 8m

23. 2. Arealimitation
• The limitation of area and height of the building of diff. type of
construction and occupancy classis achieved by satisfying floor arearatio.
• TheF
ARis specified taking into account the following aspect:
1. Occupancyclass
2. Typeof construction
3. Width of street frontage the building and the traffic load.
4. Parking facilities
5. Localfire fighting facilities
6. Water supply anddrainage.

24. • Built up area:
TheFSIshall be 1.0 with maximum utilization up to 0.4 on groundfloor.
Sr.No. Area ofplot Maximum permissible coveredarea
1. <200 m2 66.67% of the plot area on ground floor and first floor.
Nothing on second floor exceeding 25 %of the ground
floor.
2. 201-500m2 50 %of the plot area or 133 m2 which ever ismore.
3. 501-1000 m2 40 %of the plot area or 250 m2 which ever ismore.
4. >1000 m2 33.33 %of the plot area or 400 m2 which ever ismore.

25. Margin
• The open spaces insides
residential type have to
and around the
provide to carter
building
for the
particularly
lighting and
ventilation requirement.
1. Front open space
2. Rearopen space
3. Sideopen space

26. For building upto 300m2plotarea
Sr.No. Plot area(m2) Frontopenspace Rear open space Sides openspace
1. Up to 50 0.75 - -
2. 51 to 75 1.0 1.0 0.5
3. 76 to 100 1.25 1.00 0.5
4. 101 to 150 2.0 2.0 1.25
5. 151 to 200 2.0 2.0 1.25
6. 201 to 300 3.0 2.0 1.50

27. Forbuilding above 300m2 plot area and height upto 13m
1. Minimum front setback
2. Minimum rear set back is 3m
3. Minimum side backs
Width of road inm Minimum set back inm
Up to 12 3
12 to 18 4
Above 18 4.5
Plot area Minimum setback
301 to 670 1.5 m or 0.25 of theheight
of the building on eachside
Above 670 3 m on both side or 0.25 of
height of the buildingwhich
is higher

28. Height Of TheBuilding
• Height of building according to width of street:
1. Themaximum height of the building shall not exceed1.5 times the
width of road.
2. For building in vicinity of aerodromes, the maximum height of the
building is fixed in consultation with civil aviationauthorities.
• Theheight shall not included if building is erected one-third of roof
area, including:
1. Roof tank and its support
2. Ventilating, lift room
3. Roof structure other than pent-house

29. Plinth height
• Theheight of the plinth shall not be lessthan450 mm ground level.
• Minimum height of 600 mm is the best from drainage orother
consideration.
• It is minimum 900 mm in waterlogged soils.

30. Minimum SizeOf Diff. Rooms
No. Name ofroom Minimum area Minimum size ofside Height Other
requireme
nt
1. Habitable room
-bed room
-living room
-study room
9.5 m2 2.4 m Not less then
2.75 m from
surface of floor to
lowest point of
ceiling
Asper need
2. Kitchen 5 m2 1.8 m Not less than
2.75 m
Asper need
3. Bath rooms and
water closets
1.8 m2 If bath and water closet
are combined, its floor
area shall not lessthan
2.8 m2 with minimum
width 1.2m
Not lessthan2.1
m
Asper need

31. No. Name ofroom Minimum area Minimum sizeof
side
Height Other requirement
4. Store room 3 m2 ----- Not lessthan 2.2m -----
5. Garage 12.5 m2 3m x6m Not lessthan 2.4m -----
6. Stair case Theminimum width
of stair is 0.9m.
Clearhead room
shall be 2.2m
• Minimum width
of treadwithout
nosing 250 mm
in residential.
• Themaximum
height of rise
shall be 190mm
for residential
building.

33. Basement/Cellar
• Thebasement shall not be used for residentialpurpose.
• Thebasement to be constructed within the prescribed set back and
building lines and subject to maximum on entrance floor may beput
to only the followinguse:
• Storage of household
• Strongrooms, bank cellars
• Parking places
• Air conditioning equipment and other machine

34. Requirement of basement
• The height of basement from the floor to the underside of the
roofslab or ceiling shall not be lessthan 2.4m.
• Themaximum height of the ceiling of any basement shall be 0.9m
and maximum 1.2 m above the averagesurrounding ground level.
• Adequate arrangement shall be made such that surface drainage does
not enter thebasement.
• Thewalls and floor of the basement shall bewatertight.
• Theaccessto the basement shall be separate from the mainand
alternative staircase providing accessand exit from higherfloor.

35. Compound Wall
• Exceptwith the special permission of the maximum height of
compound wall shall be 1.5 m above center line of frontstreet.
• It is permitted 2.4 m when the top of 0.9 m is open type construction
• In corner plot it is restricted to 0.75 m for a length of 10 m on side
and front intersection.
• Thebalance height of 0.75 m may be made up through railing andof
design to be approved by the authority.