FAQ’s for Structural Design Jobs
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1. 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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2. In moment resistant connections, the moment resistance of riveted connection depends upon
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3. The minimum thickness of a steel plate, which is directly exposed to weather and is not accessible for cleaning and repainting, should be:
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4. The effect of racking forces is considered in the design of i) lateral braces, ii) chord members. The correct answer is
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5. The diameter of base of conical flare of a steel stack is (where d is the diameter of the cylindrical part)
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6. The allowable tensile stress in structural mild steel plates for steel tank is assumed as
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7. Area of openings for buildings of large permeability is more than
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8. The bracing between two columns of a steel tank will be designed to resist
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9. The capacity of the smallest pressed steel tank is
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10. The external wind pressure acting on a roof depends on
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11. Gantry girders are designed to resist
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12. The web crippling due to excessive bearing stress can be avoided by
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13. The slenderness ratio of lacing bars should not exceed
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14. The overlap of batten plates with the main members in welded connections should be more than (where t = thickness of the batten plate)
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15. The use of tie plates in laced columns is
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16. The maximum slenderness ratio of a compression member carrying both dead and superimposed load is
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17. A butt weld is specified by
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18. Bolts are most suitable to carry
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19. Minimum pitch of the rivets shall not be less than (where d is gross diameter of rivet)
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20. By providing sufficient edge distance, which of the following failures of riveted joint can be avoided?
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21. If the thickness of plate to be connected by a rivet is 16mm, then suitable size of rivet as per Unwin’s formula will be
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22. The difference between gross diameter and nominaldia meter for the rivets up to 25 mm diameter is
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23. When the axis of load lies in the plane of rivet group, then the most heavily loaded rivet will be the one which
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24. Which of the following types of riveted joint is free from bending stresses?
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25. 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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26. The heaviest I-section for same depth is
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27. If the size of a column is reduced above the floor, the main bars of the column, are
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28. An under-reinforced section means
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29. With usual notations the depth of the neutral axis of a balanced section, is given by
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30. At-beam behaves as a rectangular beam of a width equal to its flange if its neutral axis
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31. Enlarged head of a supporting column of a flat slab is technically known as
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32. The maximum thickness of the cover at the end of a reinforcing bar should not be less than twice the diameter of the bar subject to a minimum of
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33. The maximum ratio of span to depth of a slab simply supported and spanning in one direction, is
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34. Which of the following methods of structural analysis is a displacement method?
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35. In the slope deflection equations, the deformations are considered to be caused by
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36. According to IS codes recommendations, the maximum depth of stress block for balanced section of a beam of effective depth d is
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37. If the size of panel in a flat slab is 6m x 6m, then as per Indian standard code, the widths of column strip and middle strip are
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38. When shear stress exceeds the permissible limit in a slab, then it is reduced by
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39. A truss containing j joints and m members, will be a simple truss if?
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40. The maximum deflection due to a load W at the free end of a cantilever of length L and having flexural rigidity EI, is?
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41. If a concrete column 200×200 mm in cross-section is reinforced with four steel bars of 1200 mm2 total cross-sectional area. Calculate the safe load for the column if permissible stress in concrete is 5 N/mm2 and Es is 15Ec?
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42. A simply supported beam carries varying load from zero at one end and W at the other end. If the length of the beam is a, the maximum bending moment will be?
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43. A simply supported beam A carries a point load at its mid span. Another identical beam B carries the same load but uniformly distributed over the entire span. The ratio of the maximum deflections of the beams A and B, will be?
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44. Shell structure does not have any?
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45. For a simply supported beam of span 15m, the maximum effective depth to satisfy vertical deflection limit should be?
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46. One of the criteria for the effective width of flange of T-beam is bf =-+bw+6Df6 in above formula, lo signifies?
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47. The live load for a sloping roof with slope 15°, where access is not provided to roof, is taken as
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48. The maximum spacing of vertical stiffeners is (where d is the distance between flange angles)
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49. When the axis of load lies in the plane of rivet group, then the most heavily loaded rivet will be the one which (where, Fa is the load shared by each rivet due to axial load and F mis the shearing load due to moment in any rivet.)
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50. Which of the following types of riveted joint is free from bending stresses ?
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