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

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3. 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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4. 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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5. The shape factor of an isosceles triangle for bending about the axis parallel to the base is:

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

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

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

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

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

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12. Steel tanks are mainly designed for

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

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14. The external wind pressure acting on a roof depends on

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

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

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17. Gantry girders are designed to resist

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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 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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20. The maximum slenderness ratio of a steel column, the design of which is governed by wind or seismic forces 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. For a standard 45° fillet, the ratio of size of fillet to throat thickness is

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

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

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

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

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

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29. Effective depth and depth of the neutral axis respectively of a singly reinforced?

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30. An under-reinforced section means

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31. With usual notations the depth of the neutral axis of a balanced section, is given by

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

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

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34. 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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35. The maximum ratio of span to depth of a slab simply supported and spanning in two directions, 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 minimum thickness of s flat slab is taken

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39. 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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40. The width of the flange of a L-beam, should be less than

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41. If the width of the foundation for two equal columns is restricted, the shape of the footing generally adopted, is

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42. Which of the following is not the displacement method?

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43. When a uniformly distributed load, longer than the span of the girder, moves from left to right, then the maximum bending moment at mid section of span occurs when the uniformly distributed load occupies

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44. If the size of panel in a flat slab is 6m x 6m, then as per Indian standard code, the widths of column strip and middle strip are

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

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46. 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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47. The maximum permissible span of asbestos cement sheets is

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48. 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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49. Battening is preferable when the( i) column carries axial load only, ii) space between the two main components is not very large, iii) column is eccentrically loaded The correct answer is)

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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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