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Civil Engineering Objective Questions { Steel Structure Design }

36.  Design of a riveted joint is based on the assumption :
A. Bending stress in rivets is accounted for
B. Riveted hole is assumed to be completely filled by the rivet
C. Stress in the plate in not uniform
D. Friction between plates is taken into account
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37.  Pick up the correct statement from the following :
A. The minimum pitch should not be less than 2.5 times the gross diameter of the river
B. The minimum pitch should not be less than 12 times the gross diameter of the rivet responding to its slenderness ratio is 625 kg/cm2, the safe load carrying capacity of the member, is
C. The maximum pitch should not exceed 10 times the thickness or 150 mm whichever is less in compression
D. All the above.
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38.  According to the Unwin's formula, if t is thickness of the plate in mm, the nominal diameter of the rivet, is
A. d = 1.91t
B. d = 1.91 t2
C. d = 1.91 ft.
D. d = 1.91 NT
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39.  Number of rivets required in a joint, is load load
A. shear strength of a rivet
B. bearing stregnth of a rivet (c)tearing strength of a rivet
C.(d)rivet value
D. none of these.
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40.  Strengths of a rivet in single shearing, in bearing and in tearing are 3425 kg, 4575 kg and 5025 kg respectively. If the load in,the member is 35 tonnes, the number of rivets required, is
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41.  If p and d are pitch and gross diameter of rivets, the efficiency (1) of the riveted joint, is given by
A. = p - d
B. - p + d
C.p_ p- d
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42. If the pitch is 6 cm and rivet value is 4 tonnes, the number of rivets required for a riveted connection carrying an eccentric load of 15 tonnes at a distance of 30 cm from the centre line, is
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