The document discusses strategies for architecture in hot and dry climates. It defines hot and dry climates as having average monthly temperatures over 30°C and relative humidity under 55%. Key strategies mentioned include compact building forms, minimizing sun exposure through orientation and shading, maximizing ventilation, using heat-storing wall materials, and incorporating courtyards to provide cross ventilation and natural cooling.

1. HOT
AND
DRY
CLIMATE
Sem. 3rd, Sec.B, B.arch
2014-19 SPA-PU

2. OBJECTIVE
TO DEVELOP THE KNOWLEDGE REQUIRED FOR
UNDERSTANDING THE INFLUENCE OF CLIMATE ON
ARCHITECTURE

3. INTRODUCTION
Regions having similar characteristic features of climate are
grouped under one climatic zone. According to a recent code of
bureau of Indian standards, the country may be divided into five
major climatic zones.
• Hot and dry (mean monthly temperature >30 and relatively
humidity <55%).
• Warm and humid (mean monthly temperature >25-30 and
relatively humidity <55-75%).
• Temperate (mean monthly temperature 25-30 and
relatively humidity <75%).
• Cold and dry (mean monthly temperature <25 and
relatively humidity- all values).
• Composite (this applies, when six months or more do not fall
within any of the other categories).

5. The main points:
The main points:
• Orientation and placement, to minimize sun
exposure in summer.
• Form, compact to reduce surface areas of heat
gain.
• Shade, for maximum sun protection in summer.
• Allow adequate heat gain in winter by movable
shading devices.
• Ventilation, for regulation of air movement.
Building
design

6. The larger building dimension
should face north and south
Sun orientation
Orientation
of building
west
orientation
is the worst

7. Main walls and windows should face the wind
direction in order to allow maximum cross-ventilation
of the rooms.
To reduce the effect of hot dusty winds, the leeward
side of the house is better.
Wind orientation

8. 1. Bedrooms - on the east side.
2. Living rooms - on the north or south side.
room
arrangement

9. Traditionally constructed with thick walls
and roofs and with very small openings
Sun-dried earth brick is
one of the poorest
conductors of heat
Buildingmaterial

10. 1. Walls of daytime living areas should be made of
heat-storing materials.
2. East and west walls should preferably be shaded.
3. Double walls with insulation in between are a
suitable solution.
walls

11. More windows should be provided in the north facade
of the building as compared to the east, west and south
as it receives lesser radiation throughout the year.
Openings
are necessary
for natural
lighting and
ventilation.
and window

12. Should be shaded
either by shading
devices, roof
overhangs or by
deciduous trees.
The size of the windows on the west and east
sides should be minimized in order to reduce
heat gains into the house in the early morning
and late afternoon.
Windows

13. • The flat roof is a good reflector and re-radiates heat
efficiently, especially if it consists of a solid, white painted
material.
• High solid parapet walls along the edge of the roof can on
the one hand provide daytime shade and privacy.
Roof

14. The principle involved is to catch an
unobstructed breeze at a high level and channel
it to areas in the bottom parts of the building.
Natural
ventilation

15. Cooling can be achieved by the
evaporation of water.
Passivecooling

16. 1. The courtyard is provided with water and plants, it acts as a
cooling source.
2. Internal courtyards provides cross ventilation & natural
cooling.
3. Most openings are to the internal courtyard rather than
exterior surface.
Courtyard

17. Outlets at higher levels serve to vent hot air.
Ventilators are preferred at higher levels as they
help in throwing out the hot air.

18. - Colors that absorb less heat should be used to paint
the external surface.
- Darker shades should be avoided for surfaces
exposed to direct solar radiation.
- The surface of the roof can be of white broken glazed
tiles.
- During the day-time openings should be closed and
shaded.
- Decreasing the surface of the building exposed to the
outside.
- Using materials that take a longer time to heat up.
- Providing buffer spaces (lobbies, etc.) between the
living areas and the outside.
…

19. Thank you!
http://collections.infocollections.org/ukedu/en/d/Jsk02ce/3.3.html
www.academia.edu/.../Design
www.slideshare.net/...
Reference

20. Presented by
Ronak Dhupia
Saloni Bhagat
Shruti Kapoor
Shristi Agarwal
Rajat Narang
Surbhi Joshi
Rajshree Soni
Sem. 3rd, Sec.B, B.arch
2014-19 SPA-PU