Building Construction
In English garden wall bond

The middle course of stretchers is started with a header to give proper vertical joints
One course of headers to three or five course of stretchers
Queen closer in provided in each heading course
All of these

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Building Construction
Rotary drilling

All listed here
Hinders the ground water observations and permeability test
Is not suitable for deposits containing very coarse gravel
Is not economical for holes of less than 10 cm

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Building Construction
Single Flemish bond consists of

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

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