design of steel structures MCQs – Page 2

Practise focused design of steel structures questions with marked answers for exam preparation and subject revision.

design of steel structures Mcqs
21. In case of plastic design, the calculated maximum shear capacity of a beam as per IS:800 shall be________________?
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A. 0.65 Awfy

B. 0.85 Awfy

C. 0.75 Awfy

D. re, Aw = effective cross-sectional area resisting shear fy = yield stress of the steel

E. 0.55 Awfy
22. In moment resistant connections, the moment resistance of riveted connection depends upon________________?
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A. tension in rivets

B. strength of rivets in bearing

C. shear in rivets

D. compression in rivets

23. Which of the following conditions is to be satisfied both in elastic and plastic analysis ?
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A. equilibrium condition

B. plastic moment condition

C. yield condition

D. mechanism condition

24. The actual thickness of butt weld as compared to the thickness of plate is usually________________?
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A. more

B. equal

C. none of the above

D. less

25. Bending compressive and tensile stresses respectively are calculated based on_________________?
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A. net area and gross area

B. gross area and net area

C. net area in both cases

D. gross area in both cases

26. Efficiency of a riveted joint, having the minimum pitch as per IS : 800, is_________________?
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A. 70%

B. 50%

C. 60%

D. 40%

27. The bracing provided in the plane of end posts is called__________________?
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A. portal bracing

B. top lateral bracing

C. bottom lateral bracing

D. sway bracing

28. The mechanism method and the statical method give__________________?
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A. upper and lower bounds respectively on the strength of structure

B. lower bound on the strength of structure

C. upper bound on the strength of structure

D. lower and upper bounds respectively on the strength of structure

29. According to IS Specifications, the maximum pitch of rivets in compression is_____________________?
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A. lesser of 200 mm and 161

B. lesser of 200 mm and 12 t

C. re t is thickness of thinnest outside plate or angle

D. lesser of 300 mm and 32 t

E. lesser of 3 00 mm and 24 t

30. The maximum slenderness ratio of a compression member carrying both dead and superimposed load is___________________?
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A. 180

B. 250

C. 350

D. 200

31. The relation between intensity of wind pressure p and velocity of wind V is taken as_______________?
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A. paV2

B. p a (1/V)

C. paV2

D. pa V

32. In a gusseted base, when the end of the column is machined for complete bearing on the base plate, then the axial load is assumed to be transferred to base plate__________________?
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A. 75% by direct bearing and 25% through fastenings

B. fully by direct bearing

C. fully through fastenings

D. 50% by direct bearing and 50% through fastenings
33. When the axis of load lies in the plane of rivet group, then the rivets are subjected to________________?
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A. only shear stresses

B. only tensile stresses

C. both (A) and (B)

D. none of the above

34. As compared to field rivets, the shop rivets are________________?
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A. any of the above

B. stronger

C. equally strong

D. weaker

35. The slenderness ratio of lacing bars should not exceed________________?
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A. 100

B. 120

C. 145

D. 180

36. The allowable tensile stress in structural mild steel plates for steel tank is assumed as________________?
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A. 150.0 MPa on gross area

B. 105.5 MPa on net area

C. 105.5 MPa on gross area

D. 95.0 MPa on net area

37. Bolts are most suitable to carry_________________?
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A. bending

B. shear and bending

C. axial tension

D. shear

38. When the bolts are subjected to reversal of stresses, the most suitable type of bolt is________________?
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A. ordinary unfinished bolt

B. turned and fitted bolt

C. black bolt

D. high strength bolt
39. Pitch of tacking rivets, when double angles connected back to back and acting as tension members should not be more than_________________?
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A. 300 mm

B. 1000 mm

C. 600 mm

D. 500 mm

40. According to IS:800, in the Merchant Rankine formula the value of imperfection index (n) is_______________?
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A. 1.4

B. 1.8

C. 2

D. 1