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 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. 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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4. Other conditions being same, the load factor in indeterminate structures is
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5. The ratio of plastic section modulus to elastic section modulus
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6. The mechanism method of plastic analysis satisfies
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7. Shape factor is a property which depends
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8. The least dimension in case of a circular column of diameter D is taken as
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9. In case of timber structures, the simple bending formula M = fz may be applied for
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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 floor is supported at or near the bottom but top chords of a bridge are not braced, then the bridge is called
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12. 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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13. Hudson’s formula gives the dead weight of a truss bridge as a function of
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14. Area of openings for buildings of large permeability is more than
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15. The capacity of the smallest pressed steel tank is
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16. 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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17. The internal pressure coefficient on walls for buildings with large permeability is taken as
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18. Rivets connecting flange angles to cover plates in a plate girder are subjected to
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19. The maximum spacing of vertical stiffeners is(where d is the distance between flange angles)
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20. 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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21. The web crippling due to excessive bearing stress can be avoided by
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22. Minimum thickness of web in a plate girder, when the plate is accessible and also exposed to weather, is
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23. Shear buckling of web in a plate girder is prevented by using
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24. If the 20 mm rivets are used in lacing bars, then the minimum width of lacing bar should be
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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. The actual thickness of butt weld as compared to the thickness of plate is usually
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27. Diameter of a bolt hole is usually taken as
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28. Select the correct statement
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29. Efficiency of a riveted joint, having the minimum pitch as per IS: 800, is
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30. Minimum pitch of the rivets shall not be less than (where d is gross diameter of rivet)
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31. The difference between gross diameter and nominaldia meter for the rivets up to 25 mm diameter is
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32. Bending compressive and tensile stresses respectively are calculated based on
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33. The minimum number of main steel bars provided in R.C.C.
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34. An under-reinforced section means
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35. By over-reinforcing a beam, the moment of resistance can be increased not more than
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36. 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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37. The spacing of the main bars in a simply supported slab, should not exceed its effective depth by
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38. Which of the following methods of structural analysis is a displacement method?
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39. Which of the following methods of structural analysis is a force method?
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40. The maximum bending moment due to a train of wheel loads on a simply supported girder
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41. For a two-hinged arch, if one of the supports settles down vertically, then the horizontal thrust
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42. 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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43. 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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44. Shell structure does not have any?
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45. 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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46. 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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47. Normally, the angle of roof truss with asbestos sheets should not be less than
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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. The maximum spacing of vertical stiffeners is (where d is the distance between flange angles)
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50. The range of economical spacing of trusses varies from
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