Building Construction
Crown is located at

Highest point on the extrados of the arch
Highest point on the intrados of the arch
None of these
Skew-back of the arch

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Building Construction
Grillage foundation

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

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