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FAQ’s for Structural Design Jobs

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1. 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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2. Lug angles

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3. The shape factor of an isosceles triangle for bending about the axis parallel to the base is:

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4. The mechanism method of plastic analysis satisfies

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5. The statical method of plastic analysis satisfies

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6. The moment-curvature relation at a plastic hinge is

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7. compression force in two end posts The pin of a rocker bearing in a bridge is designed for

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

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9. The portal bracing in a truss bridge is used to

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10. Hudson’s formula gives the dead weight of a truss bridge as a function of

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11. The allowable tensile stress in structural mild steel plates for steel tank is assumed as

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12. Minimum pitch provided in riveted steel tanks is (where d is diameter of rivets)

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13. The external wind pressure acting on a roof depends on

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14. 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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15. The maximum spacing of vertical stiffeners is(where d is the distance between flange angles)

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16. As per IS: 800, for compression flange, the outstand of flange plates should not exceed (where t = thickness of thinnest flange plate)

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17. Economical depth of a plate girder corresponds to

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18. Lacing bars in a steel column should be designed to resist

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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. Diameter of a bolt hole is usually taken as

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22. Bolts are most suitable to carry

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23. Minimum pitch of the rivets shall not be less than (where d is gross diameter of rivet)

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

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

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26. If the thickness of thinnest outside plate is 10 mm, then the maximum pitch of rivets in tension will be taken as

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27. The heaviest I-section for same depth is

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

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29. According to the steel beam theory of doubly reinforced beams

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30. The width of the rib of a T-beam , is generally kept between

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31. Enlarged head of a supporting column of a flat slab is technically known as

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32. The spacing of the main bars in a simply supported slab, should not exceed its effective depth by

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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. The three moments equation is applicable only when

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36. 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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37. According to IS codes recommendations, the maximum depth of stress block for balanced section of a beam of effective depth d is

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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 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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40. 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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41. Shell structure does not have any?

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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 diameter of base of conical flare of a steel stack is 9where d is the diameter of the cylindrical part)

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

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46. The range of economical spacing of trusses varies from

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47. 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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48. Horizontal stiffener in a plate girder is provided to safeguard against

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49. 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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50. The difference between gross diameter and nominal diameter for the rivets up to 25 mm diameter is

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