Building Construction
The type of ashlar masonry in which stones are finely chisel dressed and thickness of joints does not exceed 3 mm, is

Coursed ashlar masonry
Chamfered ashlar masonry
Ashlar facing masonry
Random coursed ashlar masonry

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Building Construction
Gravels

All listed here
Never swell when they come into contact with water
Vary in size between 2 to 20 mm
Are cohesionless aggregates

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