COMPOSITE CLIMATE
KRISHNAKANTH
KRITHIKA
HARISH
CONTENTS
Introduction Traditional Dwellings
Nature of climate Contemporary Dwellings
Design Criteria Comparative study
Orientation Source
Form & planning
Roofs & walls
Openings
External spaces
Ventilation
Building Materials
INTRODUCTION
The composite zone covers the central part of India.
Composite climate displays the characteristics of hot & dry,
warm & humid as well as cold climates.
Design here are guided by longer prevailing climatic conditions
. Their characteristics change from season to season alternating
between long hot, dry periods to shorter periods of
concentrated rainfall & high humidity.
India being a tropical country, most of design decisions would
pertain to cooling.
Examples:
The general recommendations of hot & dry climates would be
applicable for New Delhi for most of the year except Monsoon
where Ventilation is essential.
Eg:Kanpur, Allahabad.
Represents the regions having Composite
NATURE OF THE
CLIMATE
NATURE OF THE CLIMATE
Generally,
In summer:
Day time temperature is 32-45degree Celsius.
In Night time 27- 32 degree Celsius.
In winter:
Day time temperature is 10-25degree Celsius.
In Night time4 - 10 degree Celsius.
Receives strong monsoon winds from South-east &
north-east.
DESIGN CRITERIA
DESIGN CRITERIA
Objectives : Solutions:
1) Resist heat gain in summer & heat loss
in winter
Orientation & shape of the
Decrease exposed surface area building. Use of trees as wind
barriers.
Increase Thermal resistance Roof & wall insulation
Increase Thermal capacity Thicker Walls
Increase Buffer space Balconies
Decrease Air Exchange rate Weather Stripping
Increase shading Walls, glass surfaces
Increase surface refelctivity protected by overhangs
trees
Pale colour
DESIGN CRITERIA
Promote Heat Loss in Solutions
Summer or Monsoon
Ventilation of appliances Provide exhausts (Artificial)
Increase air exchange rate Courtyards or Wind towers or
Arrangement of openings
Increase humidity level in Dry
Summers Trees & water ponds for
evaporative cooling
Decrease humidity in Monsoon
Dehumidifiers
ORIENTATION OF
BUILDING
ORIENTATION OF BUILDING
In composite climate the orientation of the buildings is
preferable in North-East & South-West Directions.
This helps in receiving less radiations which results in lesser
heat gain & reduces the overall air conditioning requirement
& thus saves energy
Proper orientation also helps in receiving natural light &
ventilation
FORM & PLANNING
FORM & PLANNING
Open spaces such as courtyards are beneficial.
Buildings should be grouped in such a way as to take
advantage of prevailing breezes during the short periods
when air movement is necessary.
A moderately dense low rise is also suitable for this
climate , which will ensure protection of outdoor spaces.
Mutual sharing of external walls , shelter from the wind
in the cold season, shelter from dust and reduction of
surfaces exposed to solar radiation.
ROOFS AND WALLS
ROOFS AND WALLS
Roofs and external walls should be constructed of solid
masonry or concrete to have a 9-12 hours time lag in heat
transmission.
Resistance insulation should be placed at the outside
surfaces of external walls or roofs. Insulation on the inside
would only reduce the beneficial effects of high thermal
capacity of walls and roofs.
The roof pond building type, the passive collector
Storage mass has been relocated ,from the
Floor & wall of building into the roof
For radiant heat distribution to the occupied
Space
ROOFS
The roof pond system requires a body of
water to be located in the roof, protected
Controlled by exterior movable insulation .
This body of water is exposed to
direct solar Gain which absorbs &
Stores. Since Thermal storage of
ceiling of the building It will radiate
uniform low temperature
OPENINGS
OPENINGS
Orientation of buildings is determined by 2 factors suitable with so
Towards the breeze prevailing during the warm humid season to utilize its
cooling effect.
Towards the sun during cold season, to utilize the heating effect of radiation
entering through the windows.
Large openings in opposite walls are
suitable which helps in cross ventilation.
EXTERNAL SPACES
EXTERNAL SPACES
A courtyard is a most pleasant outdoor spaces for most
of the year because it excludes the winds and traps the
sun.
The courtyard should be designed in such a way so as to
allow sun penetration during winter season, but also
provides shading in hot season.
Large projecting eaves and wide verandah are in deeded
in composite climate as outdoor living areas, to reduce
sky glare and keep out of the rain and provide shade.
EXTERNAL SAPCES
VENTILATION
VENTILATION
Position of openings :
In buildings air movements must be insured through he
spaces mostly used by occupants through the living zone(
up to 2mts high).
Size of openings;
The largest air velocity will be obtained through a small inlet
opening with large outlet.
The west arrangement is full wall openings on both sides
with adjustable sashes or closing devices which can assist in
channelling the air flow in required direction.
VENTILATION
Controls of openings:
A gap between the building face and
canopy would ensure a downward pressure .
Thus a flow is directed into the living zone.
BUILDING
MATERIALS
BUILDING MATERIALS
The general building materials:
Brick & Stone masonry.
Concrete slab , stone wall of
400-500 mm in thickness.
USE OF ECO FRIENDLY MATERIALS:
Eco Friendly Materials are describe as:
A product that has been designed
to least possible damage to
the environment.
Why eco friendly materials?
Phenomenal growth in the
construction industry that depends
upon Depletable resources.
TRADITIONAL
DWELLINGS
Traditional Dwelling In Delhi
TRADITIONAL DWELLINGS IN DELHI
The village has dense settlement having external open spaces as narrow
streets and houses along both sides.
Streets act as an organizational element and extension of activity space.
Junction of streets form a chowk – a meeting place for people where rituals,
announcements, panchayats used to happen.
The house is situated in the centre of village along the chowk.
GROUND FLOOR PLAN
• The rooms on east side facing west
were used for storage of granary,
upplas whereas rooms facing east
were used for household activities
and sleeping.
• The jaal in between the rooms
covering
• the courtyard was used as space to
perform activities.
• The terrace was used for drying
clothes,
• upplas, and for sleeping at night.
• No space was as such specified for
cooking.
FRONT FACADE
CONTEMPORARY
DWELLINGS
Solar Energy Centre Gurgaon
Architect: Manjunath Hathwar
Opened:1991
The complex is located in Gurgaon, about 35 km south of Delhi
that lies in a composite climatic zone. The buildings in this
complex have been divided into three groups.
The technical and administration block.
Workshop building and electrical sub-station, etc.
The guest house.
Roof And Wall Treatment
The building was conceived as a
low spread out structure, arranged
around courtyards, maximising the
use of roof surface for evaporative
cooling system with automatic
controls.
For comfort cooling, the strategy
used was to reduce ingress of heat
by using hollow, concrete block
walls, properly shaded windows,
and a reflective finish on the roof
surface.
VENTILLATION
Permanent ventilators have been placed on the south side, the
roof is insulated two – level windows have been provided for
good ventilation.
To prevent heat gain through the roof, it has been given a
reflective white finish.
The entire building is day lit
and no artificial lighting
would be required during
normal working hours.
THE GUEST HOUSE
The first building to be put up in
the Solar Energy Centre campus,
this has an earth shelter cooling
system. Solar water heaters have
been integrated with architectural
design.
Winter heating is direct by sun
lighting of the guest rooms. Each
window is provided with an
arched sunshade, which allows
winter sun to come through the
top part of the glazing.
Solar water heaters provided in
each toilet have been integrated
with the architectural design.
A sunny terrace for solar cooking
has been provided near kitchen.
THE GUEST HOUSE
INTERNATIONAL DWELLINGS
MALASYIAN HOUSES
LIMAS HOUSE
The entire roof and walls and floors in the house prop up poles
that are embedded in the ground
The ornaments and carvings that show the charisma and the
identity of the house Most houses Limas width reaches 400 to
1000 square meters or more.
The top of the pole Onglen pole-wood and wood used to frame
tembesu visible influence of Islam on the ornaments and carvings
that are on the pyramid house.
PLAN
Limas house has a floor plan extends to the rear, most wide
reaching 400-1000 m2.
Vestibule:
Some Soko Damas
Fence tenggalong
Balcony or veranda. (There are two stairs).
"Jogan" serves as a youth place.
FOUNDATION
Foundation material is wood unglen. Type of timber that is
waterproof even stronger when wet.
The foundation of a house adapted to the swampy nature
conditions. Technical techniques like "chicken scratch".
Pole "forked" standing on the ground thick board is called
"Tapak-forked". While the tapak-an forked the beams
intersect each other is called "Botek-an"
LIVING ROOM
Kekijing 3 (Bengkalis below) is used for the officials.
Kekijing 4 (Bengkalis shoots) is used to place his Datuk
maharaja.
Gegajah as a hall / divan / hall discussion this room is the
center of the Limas house is located on the top floor and
the most honorable. And directly beneath the roof of the
Limas which sustained Alang Sunan and Soko Sunan
Living room & offices
COMPARITIVE
STUDY
COMPARITIVE STUDY
Traditional Method Modern method
Usually Roofing was made of
stone slabs of 50mm. Usually made of concrete slabs.
The thickness of slab is 150mm.
The thickness of wall is 230mm.
Stone walls of 400-500 mm in
thickness. Roofs are made of Rcc slabs.
The roof is mainly made of
bamboo hay Roof gardens which play a
Ventilation slits have been major role in insulating
provided in the roofing.
the building.
SOURCE:
Wikipedia
Scribd- High Efficiency building in composite climate
Manual of Tropical housing & building.
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