Building Construction
Rotary drilling

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

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Building Construction
Single Flemish bond consists of

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