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Steel Structure Design - Engineering

Q1:

The thickness t of a single flat lacing should not be less than

A 1/30 th length between inner end rivets

B 1/40 th length between inner end rivets

C 1/50 th length between inner end rivets

D 1/60 th length between inner end rivets

E none of these.

ANS:B - 1/40 th length between inner end rivets

And for double 1/60.