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. The ratio of plastic section modulus to elastic section modulus
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3. The mechanism method of plastic analysis satisfies
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4. The statical method of plastic analysis satisfies
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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. The portal bracing in a truss bridge is used to
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7. 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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8. The allowable tensile stress in structural mild steel plates for steel tank is assumed as
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9. The risk coefficient k, depends on
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10. Gantry girders are designed to resist
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11. 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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12. The slenderness ratio of a column supported throughout its length by a masonry wall is
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13. 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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14. A butt weld is specified by
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15. In the cross-section of a weld, throat is the
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16. Diameter of a bolt hole is usually taken as
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17. As compared to field rivets, the shop rivets are
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18. By providing sufficient edge distance, which of the following failures of riveted joint can be avoided?
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19. 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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20. The difference between gross diameter and nominaldia meter for the rivets up to 25 mm diameter is
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21. When the axis of load lies in the plane of rivet group, then the rivets are subjected to
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22. Bending compressive and tensile stresses respectively are calculated based on
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23. The heaviest I-section for same depth is
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24. The effective width of a column strip of a flat slab, is
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25. 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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26. The steel generally used in R.C.C. work, is
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27. The spacing of the main bars in a simply supported slab, should not exceed its effective depth by
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28. The minimum thickness of s flat slab is taken
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29. The width of the flange of a L-beam, should be less than
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30. 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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31. The maximum bending moment due to a train of wheel loads on a simply supported girder
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32. The three moments equation is applicable only when
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33. In the slope deflection equations, the deformations are considered to be caused by
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34. 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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35. 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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36. 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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37. A truss containing j joints and m members, will be a simple truss if?
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38. 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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39. A simply supported beam carries varying load from zero at one end and W at the other end. If the length of the beam is a, the maximum bending moment will be?
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40. A rod of uniform cross-section A and length L force P. The young’s modules E of the material, is?
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41. Shell structure does not have any?
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42. In frame structure, what transfers the load to columns?
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43. 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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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. 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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46. 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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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. Minimum pitch of the rivets shall not be less than where d is gross diameter of rivet
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50. The difference between gross diameter and nominal diameter for the rivets up to 25 mm diameter is
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