Building Construction
Which one of the following factors is considered for the orientation of buildings?

The direction of the prevailing winds in the area
The exposure of the walls and roof of the buildings to the rays of sun
All listed here
The extent up to which the sunrays penetrate with the verandah

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Building Construction
Slate

Splits into thin sheets along its bedding planes
Possesses good water absorption capacity
Is a metamorphic rock
Has a smooth surface and contains alumina and silica

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