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FAQ’s for Structural Design Jobs

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1. In moment resistant connections, the moment resistance of riveted connection depends upon

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2. The allowable shear stress in the web of mild steel beams decreases with (where ‘h’ is height and t is thickness)

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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. In case of plastic design, the calculated maximum shear capacity of a beam as per IS:800 shall be (where, Aw = effective cross-sectional area resisting shear fy = yield stress of the steel)

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5. The shape factor of an isosceles triangle for bending about the axis parallel to the base is:

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6. Shape factor is a property which depends

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7. The elastic strain for steel is about

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8. In case of timber structures, the simple bending formula M = fz may be applied for

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9. The portal bracing in a truss bridge is used to

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10. 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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11. The number of seismic zones in which the country has been divided are

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12. The bracing between two columns of a steel tank will be designed to resist

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13. The capacity of the smallest pressed steel tank is

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14. The maximum spacing of vertical stiffeners is(where d is the distance between flange angles)

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15. Bearing stiffener in a plate girder is used to

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16. The slenderness ratio of lacing bars should not exceed

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17. The effective length of a battened column is increased by

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18. According to IS:800, in the Merchant Rankine formula the value of imperfection index (n) is

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19. The best arrangement to provide unified behavior inbuilt up steel columns is by

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20. If the 20 mm rivets are used in lacing bars, then the minimum width of lacing bar should be

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21. The maximum slenderness ratio of a steel column, the design of which is governed by wind or seismic forces is

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22. The maximum slenderness ratio of a compression member carrying both dead and superimposed load is

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23. The effective length of a battened strut effectively held in position at both ends but not restrained in direction is taken as

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24. 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

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25. The slenderness ratio of a column supported throughout its length by a masonry wall is

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26. A butt weld is specified by

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27. Efficiency of a riveted joint, having the minimum pitch as per IS: 800, is

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28. 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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29. When the axis of load lies in the plane of rivet group, then the rivets are subjected to

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30. If the size of a column is reduced above the floor, the main bars of the column, are

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31. An under-reinforced section means

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32. At-beam behaves as a rectangular beam of a width equal to its flange if its neutral axis

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33. Enlarged head of a supporting column of a flat slab is technically known as

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34. The minimum thickness of s flat slab is taken

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35. 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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36. Which of the following methods of structural analysis is a displacement method?

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37. Which of the following methods of structural analysis is a force method?

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38. When a uniformly distributed load, shorter than the span of the girder, moves from left to right, then the conditions for maximum bending moment at a section is that

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39. The maximum bending moment due to a train of wheel loads on a simply supported girder

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40. Bending moment at any section in a conjugate beam gives in the actual beam

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41. While using three moments equation, a fixed end of a continuous beam is replaced by an additional span of

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42. The carryover factor in a prismatic member whose far end is fixed is

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43. A steel rod 1 meter long having square cross section is pulled under a tensile load of 8 tones the extension in the rod was 1 mm only. if E steel=2x106kg/cm2, the side of the rod, is

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44. 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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45. Shell structure does not have any?

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46. For a continuous slab of 3m 3.5m size, the minimum overall depth of slab to satisfy vertical deflection limits is?

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47. The basic wind speed is specified at a height ‘h’ above mean ground level in an open terrain. The value of ’h’ is

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48. Normally, the angle of roof truss with asbestos sheets should not be less than

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49. The range of economical spacing of trusses varies from

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50. As per IS: 800, for compression flange, the out stand of flange plates should not exceed (where t = thickness of thinnest flange plate)

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