21. The external wind pressure acting on a roof depends on__________________?
A. degree of permeability of roof
B. slope of roof
C. both (A) and (B)
D. none of the above
✅ The correct answer is option B.
Design of Steel Structures MCQs
22. The slenderness ratio of a column supported throughout its length by a masonry wall is________________?
A. zero
B. 10
C. 100
D. infinity
✅ The correct answer is option A.
23. The effective length of a fillet weld should not be less than___________________?
A. two times the weld size
B. four times the weld size
C. six times the weld size
D. weld size
✅ The correct answer is option B.
24. According to IS Specifications, the maximum pitch of rivets in compression is_____________________?
A. lesser of 200 mm and 12 t
B. lesser of 200 mm and 161
C. lesser of 300 mm and 32 t
D. lesser of 3 00 mm and 24 t
✅ The correct answer is option A.
25. Minimum spacing of vertical stiffeners is limited to________________?
A. d/4
B. d/3
C. d/2
D. 2d/3
✅ The correct answer is option B.
26. Other conditions being same, the load factor in indeterminate structures is_______________?
A. equal to load factor in determinate structures
B. more than the load factor in determinate structures
C. less than the load factor in determinate structures
D. unpredictable
✅ The correct answer is option B.
27. The live load for a sloping roof with slope 15°, where access is not provided to roof, is taken as_______________?
A. 0.65 kN/m2
B. 0.75 kN/m2
C. 1.35 kN/m2
D. 1.50 kN/m2
✅ The correct answer is option A.
28. Bending compressive and tensile stresses respectively are calculated based on_________________?
A. net area and gross area
B. gross area and net area
C. net area in both cases
D. gross area in both cases
✅ The correct answer is option B.
29. If the thickness of thinnest outside plate is 10 mm, then the maximum pitch of rivets in tension will be taken as______________?
A. 120 mm
B. 160 mm
C. 200 mm
D. 300 mm
✅ The correct answer is option B.
30. The basic wind speed is specified at a height ‘h’ above mean ground level in an open terrain. The value of’h’ is__________________?
A. 10 m
B. 20 m
C. 25 m
D. 50 m
✅ The correct answer is option A.