Which of the following conditions is to be satisfied both in elastic and plastic analysis?

Rivets connecting flange angles to cover plates in a plate girder are subjected to

A. Horizontal shear only

B. Vertical load only

C. Both (A) and (B)

D. None of the above

When the axis of load lies in the plane of rivet group, then the rivets are subjected to

A. Only shear stresses

B. Only tensile stresses

C. Both (A) and (B)

D. None of the above

Hudson’s formula gives the dead weight of a truss bridge as a function of

A. Bottom chord area

B. Top chord area

C. Effective span of bridge

D. Heaviest axle load of engine

The number of seismic zones in which the country has been divided are

A. 3

B. 5

C. 6

D. 7