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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. 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. A steel beam supporting loads from the floor slab as well as from wall is termed as

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4. Lug angles

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5. 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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6. Other conditions being same, the load factor in indeterminate structures is

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7. Load factor is

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8. The elastic strain for steel is about

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

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

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

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12. 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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13. 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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14. The internal pressure coefficient on walls for buildings with large permeability is taken as

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

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16. Horizontal stiffener in a plate girder is provided to safe guard against

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

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

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

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

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22. The actual thickness of butt weld as compared to the thickness of plate is usually

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23. Select the correct statement

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

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25. By providing sufficient edge distance, which of the following failures of riveted joint can be avoided?

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26. 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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27. 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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28. Which of the following types of riveted joint is free from bending stresses?

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29. 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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30. Bending compressive and tensile stresses respectively are calculated based on

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

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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. For normal cases, stiffness of a simply supported beam is satisfied if the ratio of its span to its overall depth does not exceed

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

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36. The minimum thickness of s flat slab is taken

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37. In the displacement method of structural analysis, the basic unknowns are

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

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

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40. 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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41. When shear stress exceeds the permissible limit in a slab, then it is reduced by

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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. In frame structure, what transfers the load to columns?

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44. Which of the below is a disadvantage of frame structure?

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45. The diameter of base of conical flare of a steel stack is 9where d is the diameter of the cylindrical part)

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46. The relation between intensity of wind pressure p and velocity of wind V is taken as

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47. 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)

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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. 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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