Building Construction
The lintels are preferred to arches because

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

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Building Construction
Grillage foundation

Does not require deep cutting as the required base area with required pressure intensity is obtained at a shallow depth
Is used to transfer heavy structural loads from steel columns to a soil having low bearing capacity
All listed here
Is light and economical

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