Building Construction
Auger boring

Is most economical up-to a depth of 5 meters
All of these
Is generally employed in cohesive and other self soils above water table
Is the most primitive method for making a hole in the ground

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

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

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