FAQ’s for Structural Design Jobs
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1. 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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2. 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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3. Which of the following conditions is to be satisfied both in elastic and plastic analysis?
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4. Other conditions being same, the load factor in indeterminate structures is
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5. In case of timber structures, the form factor for solid circular cross-section is taken as
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6. In case of timber structures, the simple bending formula M = fz may be applied for
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7. 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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8. Hudson’s formula gives the dead weight of a truss bridge as a function of
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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 bracing between two columns of a steel tank will be designed to resist
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11. 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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12. The internal pressure coefficient on walls for buildings with large permeability is taken as
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13. The maximum spacing of vertical stiffeners is(where d is the distance between flange angles)
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14. Bearing stiffener in a plate girder is used to
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15. The forces acting on the web splice of a plate girder are
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16. 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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17. Minimum thickness of web in a plate girder, when the plate is accessible and also exposed to weather, is
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18. Economical depth of a plate girder corresponds to
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19. The use of tie plates in laced columns is
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20. If the 20 mm rivets are used in lacing bars, then the minimum width of lacing bar should be
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21. The slenderness ratio of a column supported throughout its length by a masonry wall is
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22. According to IS Specifications, the maximum pitch of rivets in compression is (where t is thickness of thinnest outside plate or angle)
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23. A butt weld is specified by
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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. The difference between gross diameter and nominaldia meter for the rivets up to 25 mm diameter is
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26. Which of the following types of riveted joint is free from bending stresses?
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27. Bending compressive and tensile stresses respectively are calculated based on
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28. According to the steel beam theory of doubly reinforced beams
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29. The steel generally used in R.C.C. work, is
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30. 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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31. The maximum ratio of span to depth of a slab simply supported and spanning in two directions, is
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32. 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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33. In a simply supported slab, alternate bars are curtailed at
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34. The self-weight of the footing, is
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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. For a two-hinged arch, if one of the supports settles down vertically, then the horizontal thrust
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37. 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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38. When shear stress exceeds the permissible limit in a slab, then it is reduced by
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39. A truss containing j joints and m members, will be a simple truss if?
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40. 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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41. 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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42. 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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43. A simply supported beam A carries a point load at its mid span. Another identical beam B carries the same load but uniformly distributed over the entire span. The ratio of the maximum deflections of the beams A and B, will be?
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44. For a cantilever of effective depth of 0.5m, the maximum span to satisfy vertical deflection limit is?
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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. The live load for a sloping roof with slope 15°, where access is not provided to roof, is taken as
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47. 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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48. Normally, the angle of roof truss with asbestos sheets should not be less than
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49. 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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50. Horizontal stiffener in a plate girder is provided to safeguard against
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