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FAQ’s for Structural Design Jobs

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1. 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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2. For rivets in tension with counter-sunk heads, the tensile value shall be

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

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4. Load factor is

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

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6. The elastic strain for steel is about

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

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8. compression force in two end posts The pin of a rocker bearing in a bridge is designed for

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9. The internal pressure coefficient on walls for buildings with large permeability is taken as

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10. Rivets connecting flange angles to cover plates in a plate girder are subjected to

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11. Bearing stiffener in a plate girder is used to

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12. 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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13. 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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14. As per IS: 800, for compression flange, the outstand of flange plates should not exceed (where t = thickness of thinnest flange plate)

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

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

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

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18. Angle of inclination of the lacing bar with the longitudinal axis of the column should preferably be between

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

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20. In the cross-section of a weld, throat is the

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

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

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23. 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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24. Bending compressive and tensile stresses respectively are calculated based on

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25. The heaviest I-section for same depth is

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

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27. By over-reinforcing a beam, the moment of resistance can be increased not more than

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28. The maximum ratio of span to depth of a slab simply supported and spanning in two directions, is

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29. 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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30. The self-weight of the footing, is

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31. The nutral axis of a T-beam exists

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

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

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35. The three moments equation is applicable only when

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

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38. 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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39. 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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40. 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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41. Which of the below is a disadvantage of frame structure?

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42. 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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43. For a cantilever of effective depth of 0.5m, the maximum span to satisfy vertical deflection limit is?

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44. The sway bracing is designed to transfer

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

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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. The maximum permissible span of asbestos cement sheets is

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

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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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