3. Zone Building's main orientations Directional emphasis
Tropical On an axis 5o
north of east north-south
Arid On an axis 25o
north of east south-east
Temperate On an axis 18o
north of east south-south-east
Cool On an axis facing south facing south
8. Use of atriumالداخلي الفناء
1. in the tropical zone the atrium should be located so as to provide
ventilation within the built form.
2. In the arid zone the atrium should be located at the centre of the
building for cooling and shading purposes.
3. For the cool and temperate zones the atrium should be at the
centre of the building form for heat and light.
13. Wind direction
Desirable and undesirable winds
in each the climatic zones
depend largely on local
conditions.
Any breeze in (tropical and arid
climates) is useful for most of
the year whereas in higher
latitudes most wind has to be
screened.
14. Cross ventilation
1. for the tropical zones as much
ventilation as possible is desired.
2. For the arid zone cross
ventilation is required, but care
has to be taken to filter out
high-velocity winds.
3. In the temperate zone, cross
ventilation and shielding are
both necessary (for summer and
winter, respectively).
4. In the cool region, the
building should be protected
from cold, high-velocity winds,
although cross ventilation is still
required.