Building Construction
In grillage foundations a minimum 15 cm cover is provided on

Lower beam of lower tier
None to these
Upper flange of top tier
Ends of external beams

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Building Construction
Rotary drilling

All listed here
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

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Building Construction
Assertion A : Shishum is used for decorative woodwork.Reason R : Shishum can be polished to an excellent finish.Select your answer according to the coding system given below:

Both A and R is true but R is not the correct explanation of A
A is true but R is false
Both A and R is true and R is the correct explanation of A
A is false but R is true

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