Building Construction
The stone masonry of finely dressed stones laid in cement or lime, is

Random rubble masonry
Dry rubble masonry
Ashlar masonry
Coursed rubble masonry

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

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