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. For a compression member with double angle section, which of the following section will give larger value of minimum radius of gyration?
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4. Lug angles
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5. 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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6. The shape factor of an isosceles triangle for bending about the axis parallel to the base is:
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7. In the virtual work method, the virtual quantity is
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8. The mechanism method of plastic analysis satisfies
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9. The moment-curvature relation at a plastic hinge is
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10. The mechanism method and the statical method give
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11. In case of timber structures, the form factor for solid circular cross-section is taken as
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12. In case of timber structures, the simple bending formula M = fz may be applied for
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13. 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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14. The diameter of base of conical flare of a steel stack is (where d is the diameter of the cylindrical part)
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15. The allowable tensile stress in structural mild steel plates for steel tank is assumed as
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16. Area of openings for buildings of large permeability is more than
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17. The bracing between two columns of a steel tank will be designed to resist
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18. The capacity of the smallest pressed steel tank is
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19. Minimum pitch provided in riveted steel tanks is (where d is diameter of rivets)
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20. Horizontal stiffener in a plate girder is provided to safe guard against
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21. Minimum thickness of web in a plate girder, when the plate is accessible and also exposed to weather, is
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22. The slenderness ratio of lacing bars should not exceed
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23. The effective length of a battened column is increased by
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24. Lacing bars in a steel column should be designed to resist
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25. The use of tie plates in laced columns is
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26. Angle of inclination of the lacing bar with the longitudinal axis of the column should preferably be between
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27. According to IS:800, in the Merchant Rankine formula the value of imperfection index (n) is
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28. The actual thickness of butt weld as compared to the thickness of plate is usually
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29. In the cross-section of a weld, throat is the
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30. When the bolts are subjected to reversal of stresses, the most suitable type of bolt is
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31. Diameter of a bolt hole is usually taken as
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32. Efficiency of a riveted joint, having the minimum pitch as per IS: 800, is
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33. The difference between gross diameter and nominaldia meter for the rivets up to 25 mm diameter is
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34. If the size of a column is reduced above the floor, the main bars of the column, are
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35. The width of the flange of a T-beam should be less than
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36. An under-reinforced section means
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37. As the percentage of steel increases
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38. At-beam behaves as a rectangular beam of a width equal to its flange if its neutral axis
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39. 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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40. In a simply supported slab, alternate bars are curtailed at
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41. The self-weight of the footing, is
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42. The minimum thickness of s flat slab is taken
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43. Which of the following methods of structural analysis is a displacement method?
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44. 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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45. 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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46. 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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47. 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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48. The live load for a sloping roof with slope 15°, where access is not provided to roof, is taken as
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49. 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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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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