Building Construction
Queen closer may be placed

In header course
In stretcher course next to first brick
In stretcher course
In header course next to first brick

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Building Construction
Single Flemish bond consists of

Double Flemish bond facing and header bond backing in each course
English bond facing and double Flemish bond backing in each course
Stretcher bond facing and double Flemish bond backing in each course
Double Flemish bond facing and English bond backing in each course

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Building Construction
Gravels

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

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