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___________ is the wedge shaped unit at the Crown of an arch.(a) Key(b) Crown(c) Ring(d) HaunchThis question was posed to me by my college professor while I was bunking the class.This intriguing question comes from Arches Technical Terms in portion Arches, Lintels, Stairs and Formwork of Construction & Building Materials

Answer» RIGHT ANSWER is (a) Key

The explanation is: Key is sometimes made prominent by making out of a larger section and PROJECTING it below and above the outlines of an arch.


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