Building Construction
In case of multi-storeyed buildings, the forms to be removed first are

Bottom of beams and girders
Sides of beams and girders
All the above at the same time
Column forms

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Building Construction
Auger boring

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

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