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Theory of Structures - Engineering

Q1:

m1 and m2 are the members of two individual simple trusses of a compound truss. The compound truss will be rigid and determinate if

A m = m1 + m2

B m = m1 + m2 + 1

C m = m1 + m2 + 2

D m = m1 + m2 + 3

ANS:D - m = m1 + m2 + 3

To combine two individual trusses, you need at least 3 members to obtain rigidity and stability. So, D is correct.