- A. weight of tank
- B. wind pressure
- C. water pressure
- D. earthquake forces
Design of Steel Structures
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Steel tanks are mainly designed for
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The effect of racking forces is considered in the design of
i) lateral braces
ii) chord members
The correct answer is- A. only (i)
- B. only (ii)
- C. both (i) and (ii)
- D. none of the above
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For the buildings having a low permeability, the internal wind pressure acting normal to the wall and roof surfaces is taken as (where p is basic wind pressure)
- A. zero
- B. ±0.2p
- C. ± 0.5 p
- D. ±0.7p
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The effective length of a battened column is increased by
- A. 5%
- B. 10%
- C. 15%
- D. 20%
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The actual thickness of butt weld as compared to the thickness of plate is usually
- A. more
- B. less
- C. equal
- D. none of the above
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Minimum pitch provided in riveted steel tanks is (where d is diameter of rivets)
- A. 1.5 d
- B. 2.0 d
- C. 2.5 d
- D. 3.0 d
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According to IS Specifications, the effective length of a column effectively held in position at both ends and restrained in direction at one end is taken as
- A. 0.67 L
- B. 0.8 L
- C. L
- D. 1.5 L
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Generally the purlins are placed at the panel points so as to avoid
- A. Axial force in rafter
- B. Shear force in rafter
- C. Deflection of rafter
- D. Bending moment in rafter
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The minimum thickness of plates in a steel stack should be
- A. 4 mm
- B. 5 mm
- C. 6 mm
- D. 8 mm
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A circular column section is generally not used in actual practice because
- A. it is uneconomical
- B. it cannot carry the load safely
- C. it is difficult to connect beams to the round sections
- D. all of the above