Building Construction
The piece of a brick cut along the centre of width in such a way that its length is equal to that of full brick, is called

Queen closer
Half brick
Bevelled closer
King closer

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Building Construction
Slate

Is a metamorphic rock
Possesses good water absorption capacity
Splits into thin sheets along its bedding planes
Has a smooth surface and contains alumina and silica

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Building Construction
Gravels

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

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