#### Steel Structure Design

1

If N is the number of rivets in the joint, the strength of a riveted joint against shearing of rivets, is given by

A.  P_s = N xx (pi//4) d^2 xx P_s
B.  P_s = N xx (d xx t xx p_s)
C.  P_s = N xx (p - d) xx t xx P_s
D. P_s = N xx (P + d) xx t xx p_s
E. none of these.

2
A column is carrying an axial load W and an eccentric load P. If A is its cross-sectional area, ex and ey are the eccentricities and Pxx and Zyy the section modulli, the equivalent axial load is obtained from the formula,

A. P_(ep) = P_E (1 + (Ae_e)/(Z_(xxxx)) + (Ae_y)/(Z_(xxxx))) + W
B. P_(ep) = P_E (1 + (Ae_e)/(Z_(xxxx)) - (Ae_y)/(Z_(xxxx))) + W
C. P_(ep) = P_E (1 - (Ae_e)/(Z_(xxxx)) - (Ae_y)/(Z_(xxxx))) + W
D. P_(ep) = P_E (1 + (Ae_e)/(Z_(xxxx)) - (Ae_y)/(Z_(xxxx))) - W
E. P_(ep) = P_E (1 - (Ae_e)/(Z_(xxxx)) - (Ae_y)/(Z_(xxxx))) - W

3

If P is the allowable bending stress in a slab, whose greater and lesser projections from the column faces, are A and B, the thickness (t) of the slab base, is (where w is the intensity of earth pressure.)

A.  t = sqrt((3W)/(P) (A^2 + B^2/4))
B.  t = sqrt((3)/(P) (A^2 + B^2/4))
C.  t = sqrt((3W)/(P) (A^2 - B^2/4))
D.  t = sqrt((P)/(3) (A^2 + B^2/4))

4

The economical depth d of a web plate in which allowable bearing stress is fb, and the maximum bending moment is M, as suggested by Rawater and Clark, is

A. d = root[3] (M/f_b)
B. d =1.5 root[3] (M/f_b)
C. d =2.5 root[3] (M/f_b)
D. d =3.5 root[3] (M/f_b)
E. d =4.5 root[3] (M/f_b)

5

If R is the reaction on the bearing plate, the minimum moment of. inertia of the bearing stiffener provided at the support of a plate girder of overall depth D, the maximum thickness of the compression flange T, carrying total load W, is

A. (D^2 T)/(250) xx R/W
B. (D^3 T)/(250) xx R/W
C. (D T)/(250) xx R/W
D. (D T)/(250) xx W/R