Sunday 29 November 2015

Urban & Rural Planning by Aashna, 6th Std, New Generation School

Urban & Rural plans


The term “Planning” may be defined as a continuous process which involves decisions and choices, about ways of using available resources, with the aim of achieving particular goals in the future.
Rural Planning
Fig. Typical Rural area with basic amenities.

·         The size of the rural area is very small, hardly a few square kilometers (Sq.km)
·         The density of the population is very low like 50 to 100 persons/hectare.
·         Farming is the main occupation of rural dwellers.
·         There is more personal contact in rural areas and good neighborhood spirit.
·         Small scale and cottage industries are more.
Urban Planning
Fig. Typical Urban area with modern amenities.

·         Urban area consists of Municipal and administrative building, corporation boards, banks, courts and police stations.
·         In urban areas, 75% of the inhabitants work in non-agricultural activities, usually in Corporates, studios, films, etc.
·         The density of population is high, 400 persons/square kilometers.
·         In urban area, recreation centres such as parks, clubs and pools are available.
·         Urban planning includes water supply system, waste water management system, electricity supply, etc.
Plates of hand-made models differentiating Urban and Rural Planning






Reference: "Project on Urban & Rural planning" by Aashna, 6th std, New Generation School, Bangalore.
·        


Saturday 28 November 2015

Building Bye-laws & Set-backs

1               Building bye-laws


1.      What are the objects of building bye-laws in town planning?
Ans. The building bye-laws and regulations should be enforced by proper authority to achieve the following objectives:
·         To allow disciplined growth of buildings and towns.
·         To prevent haphazard development.
·         To protect safety of public against fire, noise, health hazards and structural failure.
·         To provide proper utilization of space.
·         To provide maximum efficiency in planning
·         To give guidelines to the architect or engineers in effective planning.
·         To provide health, safety and comfort to the people.
·         To benefit from maximum utilization of light, air, ventilation for the occupant of the building.
·         To prevent unauthorized construction and land use.
·         To prevent encroachment on public and private land, etc.
2.      Explain the importance of ‘Building bye-laws’.
Ans. The building bye-laws and regulations governs the following building aspects;
·         Building frontage line.
·         Built-up area of the building.
·         Height of building.
·         Open space to be left in the sides and back, etc.
·         Provision of size, height, and ventilation of rooms and apartments.
·         Provision of water supply and disposal of wastewater and other sanitary provisions.
·         General requirements of building, regarding materials and workmanship.
·         Safety measures for workers and public during construction.
3.      Enumerate the principles of building bye-laws.
Ans. The broad principles to be observed while framing the building bye-laws for any locality may be as follows:
·         Classifying the buildings with unit as a family and mentioning the requirements accordingly.
·         Classifying the rooms according to use mentioning minimum standards of each room with respect to size, height, floor area, ventilation and light.
·         Controlling the height of compound wall.
·         Controlling the location of compound gates.
·         Controlling the height of structures.
·         Implementing maximum limit of height in certain zones.
·         Controlling the area of projections in the marginal spaces.
·         Insisting suitable F.S.I (Floor space index)
·         Insisting upon suitable arrangements with respect to drainage and water supply.
·         Making compulsory appointment of licensed architect and engineers for works.
·         Mentioning the set-backs and marginal spaces.
·         Mentioning the minimum size of the plots, their dimensions and frontages.
·         Mentioning the structural design, fire safety, and other requirements in the construction of a building.
4.      Define set-back. Mention its advantages.
Ans. A set-back may be defined as the frontage margin or the open space in front of the abutting street or road. Set-back distances are necessary for widening, traffic/vehicle sighting, parking space, free air circulation for building. Following are the advantages of set-backs;
·         If necessary, part of set-backs may be given for the purpose of road widening.
·         If the set-back is uniform, the buildings are constructed in one line parallel to the axis of the road.
·         The set-backs at street corners improve visibility.
·         The set-backs impart safety to the traffic.
·         The set-backs results into better conditions of air, light and ventilation of the buildings.
·         The space of set-backs can be conveniently used as parking place.
·         The space of set-backs can be used for developing gardens also.
·         They reduce the danger of fire by increasing the distance between the buildings.
5.      Write a short note on Floor space index (FSI).
Ans. Floor space index is defined as ratio of total built up area on the floor to the plot area. Hence it is only a dimensionless number. F.S.I is also known as Floor Area ratio (F.A.R). F.S.I is a very important component of building bye-laws for controlling density of population in the jurisdiction of village/city/town. Less F.S.I indirectly means less number of residential units. This implies less congestion, hence more convenience and safety of people. The value of F.S.I or F.A.R is determined by local authority and it may be different areas and different buildings of the town.
F.S.I = Total built up area/Plot area.
Table: F.S.I for typical town.
Sl. No.
Use
Area
F.S.I
Remarks
1
Residential
Scheme area
1
Max. allowed on G.F 0.40
2
Residential
City area
4
Facing street of more than 12m width
3
Residential
City area
3
Facing street of more than 12m width
4
Industrial
Scheme area
1.50
Max. allowed on G.F 0.50
5
Commercial
Scheme area
1.33
Max. allowed on G.F 0.40

6.      State the building bye-laws for design of residential area.
Ans. The following are the most important building bye-laws;
A.    Minimum sizes of plots: Plot is a continuous portion of land marked by definite boundary including the land within the enclosure of the building, such as yard, court, open spaces, and garden attached. The permissible sizes of plots for the family unit is as under:

Sl. No.
Type
Dimensions (Meters)
Area (Sq.m)
1
Low Income Group (LIG)
9 x 15
12 x 15
135
180
2
Middle Income Group (MIG)
12 x 18
14 x 21
15 x 24
216
294
360
3
High Income Group (HIG)
18 x 27
27 x 36
486
972

B.     Marginal spaces or set-backs:

                                           I.            Front and rear margin or set-backs:

Depth of site (Meters)
Min. front (Meters)
Min. rear (Meters)
Up to 15
1.5
1.5
15-18
1.5
1.8
18-21
3.0
1.8
21-24
4.0
2.0
24-27
4.5
2.5
27-30
4.5
3.0
30-36
6.0
4.0
Above 36
9.0
4.5

                                        II.            Side margins or set-backs:

Width of site (Meters)
Min. left side (Meters)
Min. right side (Meters)
Up to 9
1.0
1.0
9-12
1.25
1.75
12-15
1.25
3.0
15-21
1.75
3.5
21-27
3.0
4.0
27-30
3.0
4.5
Above 30
4.5
6.0

C.    Minimum floor area for room: The minimum floor area for living room, bedroom, dining room, etc. should be 9m2; kitchen, store room should be 5.4m2.
D.    Proportion of built-up area to Plot area: The ratio of total built-up area to the plot area of the building is called Floor space index. It is fixed by the local authority and is different for different areas and different buildings in the city.
E.     Height of plinth: The plinth height should be at least 45cm above the road level or plot level whichever is higher.
F.     Height of floors: The clear height of living room to be not less than 3m, for bath room, W.C, etc. to be not less than 2.5m, for passage to be less than 2m.
G.    Proportion of window area to Floor area: The window are should not be less than one-seventh of the floor area of the room to secure good amount of light and ventilation.
H.     Projections in Margins: The projections of the following elements in margins shall be as follows:
·         Sun-shade or Canopy of 3m wide and 2.5m above the ground level.
·         Gallery to be not more than 1.2m wide at floor level.
I.       Cellar: The minimum height shall be 2.4m, ventilation to be one-tenth of floor area.
J.      Stair: The minimum width of stair either provided inside or attached to the outside of the building and open sky shall not be less than 90cm, with inclination to horizontal or pitch within 30˚ to 45˚
K.    Compound wall and gate: The height of the compound wall shall not be less than 1.5m on road side and 1.8m on other sides. The gate shall be of 1.2m height and open from inwards.
L.     Materials and workmanship: All the materials shall conform as per the specifications and good workmanship.

Reference:
·         Town Planning by Rangwala. Published by Charotar, 24th edition; 2011.

·         Town Planning text book by H.S. Vishwanath, Published by Sapna book house, 2nd revised and enlarged edition; 2014.

Tuesday 24 November 2015

Architecture

1               Elements of Architecture


1.      List the principles of Architecture and explain them briefly. (May 2009 5m, May 2015 5m, Dec 2014 5m, Dec 2013 6m, May 2013 5m, Nov 2011 5m, May 2011 10m, May 2010 10m)
-          Explain the aspect of truth as a principle of Architecture. (Nov 2010 5m, Nov 2009 5m)
Ans: The great principles of architecture are:
a)      Goodness or convenient arrangement –
Ø  In case of ordinary house we should consider the adequate sizes of rooms, their convenient arrangement.
Ø  In case of museum we should provide galleries, with ample wall space and top light.
Ø  In case of shops, it should have large size show-windows for the display 
Ø  In case of school buildings, it should have large sized classrooms with many windows to admit the lights, meeting halls and playground at the rear.
Ø  General arrangement of office, workshops, and godowns, etc. should be of convenient size for smooth operation of tasks, manufacture process from raw material to finished product, and for storage purpose.
b)      Beauty –
Ø  It is the second principle of architecture, the mass definition for beauty changes depending upon the culture and the region.
Ø  It raises the aesthetic element. One cannot measure it, but one can feel it.
Ø  A grand building with graceful out-lines creates a deep impression and stimulates emotions of the visitors.
c)      Aspect of Truth – Truth is exhibited in two ways as follows;
                                           I.            Clarity of purpose:
Ø  Good architecture should not be devoid of truth.
Ø  Good architecture can never deceive the public even for a moment.
Ø  The building should express the true idea of the purpose.
Ex: A residential building should not look like a theatre, nor a town-hall.
Ø  There should not be a false statement in regard to the purpose of the construction. Ex: A living room should not look like a store room. Or a prayer hall should not look like business hall.
                                        II.            Clarity of structure:
Ø  Each part of the structure should express the function it has to perform.
Ø  Stronger materials should be used to support the weaker ones.
Ø  The materials should be used in their proper place without causing damage. Ex. Granite which is hard should be used as foundation and basement materials, bricks for supporting walls, marble for tracery work, wood for doors, windows and wardrobes, etc.

2.      What are the qualities of Architecture? Explain them briefly. (May 2009 5m, May 2015 5m, Dec 2014 5m, Dec 2013 4m, May 2013 5m, May 2011 5m, Nov 2010, Nov 2009 5m)
Ans: The qualities of architecture are as follows;
a.       Strength: A building must have the appearance of strength, and it should be stable and durable. Ex. Taj Mahal, Qutub Minar, etc. have stood firm even after centuries after they are built.
b.      Vitality: Good architecture must show evidence of life. The method of construction should express vitality and growth. The expression comes from the materials used in the construction, and their placement. Ex. Mysore Palace, St. Peter’s church in Rome.
c.       Unity: Unity is oneness and brings harmony among the elements in a building like doors, windows, walls, etc. the correct combination of these will make the building appear as one unit.
d.      Restraint: Good architecture should not possess over-ornamentation. Excessive or unrestrained decoration spoils the beauty, and diminishes the effect.
e.       Refinement: Refinement can be achieved by using proper material in the proper place and restraint excessive use of ornaments. Every material must be the best of its kind and suited to its true purpose.
f.       Repose: Repose is based on strength and assured position. A well-defined building gives a feeling of repose in observer’s mind. Ex. Vidhan Soudha of Bangalore, the building speaks with confidence, therefore, it is the best example for great architecture.
g.      Grace: Good architecture should possess the expression of grace and attractiveness. The columns of Greek temple are often made graceful by providing delicate mouldings at the base, capital and flutes in the shaft.
h.      Breadth: It indicates proper massing of different parts of the structure and their sub-ordination of details to the composition. Thus entire design is brought into a unity.
i.        Scale: It is the relationship of several parts to one another. In a building, doors, windows, cornices, should be in due proportion tone another and to general scheme.
j.        Pictorial setting and background: Every building must have a good pictorial setting and every part must shine with respect to a good background such as trees or natural features like hills, rivers, etc. We must take also take landscaping into account, i.e. planning of drives, lawns, gardens, flower-beds, etc. to form a beautiful setting for a building.
k.      Expression of purpose: The purpose of the building should be made clear by the use of symbolic ornaments at the frontage of the building. Ex. A church by its spire, and a mosque by the minarets and dome, etc.

3.      List the factors to be considered in framing an architecture of a building. Explain in detail. (Nov 2011 10m)
-          List the elements of Architecture. (May 2009 5m, May 2015 5m, Dec 2013 5m, Nov 2009 5m)
Ans: The factors considered in framing an architecture of a building or the elements of architecture are as follows;
a.       Mass: The massive size of the building is important to make it look durable and long standing. Massive size of columns and arches gives more mass to the building. A building with unequal masses on either side will be lacking in stability and produces the sense of discomfort.
b.      Form: Form can be measured, from top to bottom (Height), side to side (Width), and from back to front (Depth). Skillful combination of various forms produces stability as well as elegance in a building.
c.       Proportion: Proportion refers to relative sizes within the structures, which is very important in architecture. For instance, government buildings, theaters, mosques and churches are often built to impress, while proportions in a private home are usually more according to human size.
d.      Balance and Symmetry: Balance means equality and can be easily obtained by purely symmetrical type. In case of symmetrical type, the focal point of interest is placed exactly in the centre of composition.

4.      State the scope of Architecture. (May 2010 5m)
-          State the aims of Architecture. (Nov 2009 5m)
Ans: The following are the aims of architecture;
·         To add beauty and offer convenient arrangement for the buildings.
·         To exhibit clarity of purpose and clarity of structure.
·         To provide the sense of strength and durability to the buildings.
·         To utilize proper materials at the proper places and in appropriate form.
·         To achieve grace by ornamental enrichment and beauty in finishing to the structure.
·         To implement modern techniques, but still maintain the vintage appearance of heritage structures.
5.      Define Architecture. Explain the importance of it. (Nov 2010 5m)
Ans: The selection of forms, shapes, materials, texture, colour, etc. for a structure to make it look elegant and beautiful is called Architecture. It tells us how to provide support to the building economically from the point of view of materials as well as of space. The importance of architecture are as follows:
·         It covers a remarkable wide field of knowledge and human activities.
·         It makes use of applied services such as structural engineering, sanitation, hygiene and ventilation, etc.
·         It utilizes proper materials at the proper places and in appropriate form.
·         It exhibits clarity of purpose and clarity of structure.
·         It adds beauty and offer convenient arrangement for the buildings.

Reference:
·         Town Planning by Rangwala. Published by Charotar, 24th edition; 2011.
·         Town Planning text book by H.S. Vishwanath, Published by Sapna book house, 2nd revised and enlarged edition; 2014.