Building Construction
The lintels are preferred to arches because

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

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Building Construction
In clay soil

Differential settlement is generally prevalent
All listed here
Swelling and shrinkage characteristics prevail
Consolidation continues even after several years of construction

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