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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. The connection of intermediate vertical stiffeners to the web, not subjected to external loads, shall be designed for a minimum shear force (kN/m) of (where, t = the web thickness in mm, h = the outstand of stiffener in mm)

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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 the virtual work method, the virtual quantity is

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

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6. The statical method of plastic analysis satisfies

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7. The moment-curvature relation at a plastic hinge is

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8. The mechanism method and the statical method give

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9. In case of timber structures, the form factor for solid circular cross-section is taken as

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

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11. 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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12. As per IS: 875, for the purposes of specifying basic wind velocity, the country has been divided into

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

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

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

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16. Steel tanks are mainly designed for

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

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

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19. The slenderness ratio of lacing bars should not exceed

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

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

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24. According to IS Specifications, the maximum pitch of rivets in compression is (where t is thickness of thinnest outside plate or angle)

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

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26. Select the correct statement

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27. 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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28. The difference between gross diameter and nominaldia meter for the rivets up to 25 mm diameter is

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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 thickness of thinnest outside plate is 10 mm, then the maximum pitch of rivets in tension will be taken as

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31. An under-reinforced section means

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

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33. 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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34. In a simply supported slab, alternate bars are curtailed at

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35. The nutral axis of a T-beam exists

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

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

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

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

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

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41. 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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42. 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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43. 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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44. 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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45. The live load for a sloping roof with slope 15°, where access is not provided to roof, is taken as

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46. Generally, the purlins are placed at the panel points so as to avoid

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47. To minimize the total cost of a roof truss, the ratio of the cost of truss to the cost of purlins shall be

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

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50. Horizontal stiffener in a plate girder is provided to safeguard against

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