1.

The pitch normally provided for corrugated galvanised iron (GI) sheets is:

A. 1/24 to 1/12
B. 1/48 to 1/12
C. 1/3 to 1/6
D. 1/10 to 1/15
E. 1/12 to 1/16
Answer» D. 1/10 to 1/15


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