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

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3. In the virtual work method, the virtual quantity is

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

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5. Load factor is

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6. The statical method of plastic analysis satisfies

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

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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 bracing provided in the plane of end posts is called

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

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

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

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15. 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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16. The forces acting on the web splice of a plate girder are

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17. Gantry girders are designed to resist

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

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

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20. The slenderness ratio of lacing bars should not exceed

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21. The use of tie plates in laced columns is

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

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

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

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

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

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30. 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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31. In a gusseted base, when the end of the column is machined for complete bearing on the base plate, then the axial load is assumed to be transferred to base plate

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

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

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

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35. The steel generally used in R.C.C. work, is

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36. The self-weight of the footing, is

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37. The nutral axis of a T-beam exists

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

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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. 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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42. A cantilever of length is subjected to a bending moment at its free end If EI is the rigidity of the section, the deflection of the free end, 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. 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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46. The range of economical spacing of trusses varies from

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

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

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