Building Construction
Depth or height of the arch is the

Vertical distance between springing line and intrados
Perpendicular distance between intrados and extrados
Perpendicular distance between springing line and extrados
None of these

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Building Construction
Mansard roof is a roof which slopes in

Two directions without break in the slope on each side
Four directions with break in the slope on each side
Two directions with break in the slope on each side
Four directions without break in the slope on each side

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