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FAQ’s for Structural Design Jobs

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1. For a compression member with double angle section, which of the following section will give larger value of minimum radius of gyration?

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2. Lug angles

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3. The ratio of plastic section modulus to elastic section modulus

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4. The least dimension in case of a circular column of diameter D is taken as

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

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6. The centrifugal force due to curvature of track is assumed to act on the bridge at a height of

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7. If the loaded length of span in meters of a railway steel bridge carrying a single track is 6 m, then impact factor is taken as

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8. 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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9. Which of the following sections should preferably be used at places where torsion occurs?

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10. The allowable tensile stress in structural mild steel plates for steel tank is assumed as

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11. Area of openings for buildings of large permeability is more than

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12. Minimum pitch provided in riveted steel tanks is (where d is diameter of rivets)

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

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15. Intermediate vertical stiffeners in a plate girder need be provided if the depth of web exceeds 9where t is thickness of web)

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16. Minimum spacing of vertical stiffeners is limited to (where d is the distance between flange angles)

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17. Bearing stiffeners are provided at i) the supports, ii) the mid span, iii) the point of application of concentrated loads. The correct answer is

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18. The web crippling due to excessive bearing stress can be avoided by

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19. Minimum thickness of web in a plate girder, when the plate is accessible and also exposed to weather, is

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20. The slenderness ratio of lacing bars should not exceed

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21. Economical depth of a plate girder corresponds to

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22. The use of tie plates in laced columns is

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

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

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25. 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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26. A circular column section is generally not used in actual practice because

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27. When the bolts are subjected to reversal of stresses, the most suitable type of bolt is

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28. As compared to field rivets, the shop rivets are

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29. The effective width of a column strip of a flat slab, is

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30. According to the steel beam theory of doubly reinforced beams

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31. For the design of a simply supported T-beam the ratio of the effective span to the overall depth of the beam is limited to

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32. If the length of an intermediate span of a continuous slab is 5m, the length of the end span is kept

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

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34. On a circular slab of radius, the maximum radial moment at the center if the load on the slab in wkn/m2

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35. The nutral axis of a T-beam exists

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36. In a pre-stressed member, it is advisable to use

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37. The maximum ratio of span to depth of a slab simply supported and spanning in one direction, is

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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 centroid of compressive force, from the extreme compression fiber, in limit state design lies at a distance of ? (Where xu is the depth of natural axis at the limit state of collapse)

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40. 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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41. 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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42. A lift of weight W is lifted by a rope with an acceleration f. if the area of cross-section of the rope is A, the stress in the rope is?

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43. 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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44. A rod of uniform cross-section A and length L force P. The young’s modules E of the material, is?

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

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47. The maximum permissible span of asbestos cement sheets is

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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. Minimum pitch of the rivets shall not be less than where d is gross diameter of rivet

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50. The difference between gross diameter and nominal diameter for the rivets up to 25 mm diameter is

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