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FAQ’s for Structural Design Jobs

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1. A steel beam supporting loads from the floor slab as well as from wall is termed as

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2. 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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3. 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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4. 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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5. The mechanism method of plastic analysis satisfies

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6. The statical method of plastic analysis satisfies

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7. In case of timber structures, the form factor for solid circular cross-section is taken as

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8. The bracing provided in the plane of end posts is called

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9. 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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10. The capacity of the smallest pressed steel tank is

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11. The internal pressure coefficient on walls for buildings with large permeability is taken as

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12. Rivets connecting flange angles to cover plates in a plate girder are subjected to

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13. Bearing stiffener in a plate girder is used to

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14. The web crippling due to excessive bearing stress can be avoided by

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15. The effective length of a battened column is increased by

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16. The maximum slenderness ratio of a steel column, the design of which is governed by wind or seismic forces is

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17. The slenderness ratio of a column supported throughout its length by a masonry wall is

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18. A butt weld is specified by

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19. Select the correct statement

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20. By providing sufficient edge distance, which of the following failures of riveted joint can be avoided?

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21. 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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22. The difference between gross diameter and nominaldia meter for the rivets up to 25 mm diameter is

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23. The heaviest I-section for same depth is

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24. The minimum number of main steel bars provided in R.C.C.

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25. An under-reinforced section means

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26. The effective width of a column strip of a flat slab, is

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27. In a simply supported slab, alternate bars are curtailed at

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28. The minimum thickness of s flat slab is taken

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29. The maximum thickness of the cover at the end of a reinforcing bar should not be less than twice the diameter of the bar subject to a minimum of

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30. The width of the flange of a L-beam, should be less than

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31. The maximum ratio of span to depth of a slab simply supported and spanning in one direction, is

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32. In the displacement method of structural analysis, the basic unknowns are

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33. Which of the following is not the displacement method?

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34. 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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35. Bending moment at any section in a conjugate beam gives in the actual beam

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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. 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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38. 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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39. 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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40. Shell structure does not have any?

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41. Which of the below is a disadvantage of frame structure?

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42. 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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43. 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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44. 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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45. The live load for a sloping roof with slope 15°, where access is not provided to roof, is taken as

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46. 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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47. Normally, the angle of roof truss with asbestos sheets should not be less than

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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. Which of the following types of riveted joint is free from bending stresses ?

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