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. 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 shape factor of an isosceles triangle for bending about the axis parallel to the base is:
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5. Other conditions being same, the load factor in indeterminate structures is
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6. Load factor is
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7. The least dimension in case of a circular column of diameter D 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 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. Hudson’s formula gives the dead weight of a truss bridge as a function of
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12. As per IS: 875, for the purposes of specifying basic wind velocity, the country has been divided into
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13. The number of seismic zones in which the country has been divided are
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14. The bracing between two columns of a steel tank will be designed to resist
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15. The internal pressure coefficient on walls for buildings with large permeability is taken as
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16. Bearing stiffener in a plate girder is used to
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17. The forces acting on the web splice of a plate girder are
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18. 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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19. 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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20. Minimum thickness of web in a plate girder, when the plate is accessible and also exposed to weather, is
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21. The slenderness ratio of lacing bars should not exceed
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22. The use of tie plates in laced columns is
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23. The actual thickness of butt weld as compared to the thickness of plate is usually
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24. A butt weld is specified by
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25. In the cross-section of a weld, throat is the
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26. By providing sufficient edge distance, which of the following failures of riveted joint can be avoided?
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27. 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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28. Which of the following types of riveted joint is free from bending stresses?
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29. The minimum number of main steel bars provided in R.C.C.
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30. For the design of a simply supported T-beam the ratio of the effective span to the overall depth of the beam is limited to
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31. At-beam behaves as a rectangular beam of a width equal to its flange if its neutral axis
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32. The self-weight of the footing, is
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33. In a pre-stressed member, it is advisable to use
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34. The width of the flange of a L-beam, should be less than
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35. If the width of the foundation for two equal columns is restricted, the shape of the footing generally adopted, is
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36. 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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37. 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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38. In moment distribution method, the sum of distribution factors of all tha members meeting at any joint is always
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39. When shear stress exceeds the permissible limit in a slab, then it is reduced by
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40. 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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41. The maximum deflection due to a uniformly distributed load w/unit length over entire span of a cantilever of length l and of flexural rigidly EI, is?
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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. For a simply supported beam of span 15m, the maximum effective depth to satisfy vertical deflection limit should be?
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44. 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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45. To minimize the total cost of a roof truss, the ratio of the cost of truss to the cost of purlins shall be
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46. 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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47. The range of economical spacing of trusses varies from
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48. 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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49. Intermediate vertical stiffeners in a plate girder need be provided if the depth of web exceeds (where t is thickness of web)
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50. Minimum pitch of the rivets shall not be less than where d is gross diameter of rivet
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