Building Construction
The lintels are preferred to arches because

All of these
Arches are difficult in construction
Arches require strong abutments to withstand arch thrust
Arches require more headroom to span the openings like doors, windows etc.

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Building Construction
During percussion drilling

Caving or mixing of strata are caused in soft soils or cohesion-less soils
All listed here
The soil to a considerable depth below the bottom of the hole gets disturbed
Ground water observations are hindered due to entry of the slurry in the soil below the bottom of the hole

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