Building Construction
Grillage foundation

Is used to transfer heavy structural loads from steel columns to a soil having low bearing capacity
Is light and economical
Does not require deep cutting as the required base area with required pressure intensity is obtained at a shallow depth
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Building Construction
Which one of the following factors is considered for the orientation of buildings?

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

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Building Construction
Raft foundations are used for:

Providing increased area of foundation over poor bearing capacity of soil
Spanning over small soft or loose pockets
Counter acting the hydrostatic effect
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