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FAQ’s for Structural Design Jobs

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1. In moment resistant connections, the moment resistance of riveted connection depends upon

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2. 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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3. 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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4. In the virtual work method, the virtual quantity is

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5. Load factor is

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6. The ratio of plastic section modulus to elastic section modulus

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7. The statical method of plastic analysis satisfies

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8. The mechanism method and the statical method give

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9. The elastic strain for steel is about

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

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11. The least dimension in case of a circular column of diameter D is taken as

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

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13. 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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14. Which of the following sections should preferably be used at places where torsion occurs?

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15. Area of openings for buildings of large permeability is more than

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16. The forces acting on the web splice of a plate girder are

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17. Gantry girders are designed to resist

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

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19. Minimum thickness of web in a plate girder, when the plate is accessible and also exposed to weather, is

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

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21. Angle of inclination of the lacing bar with the longitudinal axis of the column should preferably be between

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22. If the 20 mm rivets are used in lacing bars, then the minimum width of lacing bar should be

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23. The maximum slenderness ratio of a compression member carrying both dead and superimposed load is

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24. According to IS Specifications, the effective length of a column effectively held in position at both ends and restrained in direction at one end is taken as

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

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26. 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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27. For a standard 45° fillet, the ratio of size of fillet to throat thickness is

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28. 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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29. When the axis of load lies in the plane of rivet group, then the rivets are subjected to

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

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31. 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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32. The nutral axis of a T-beam exists

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33. The maximum bending moment due to a train of wheel loads on a simply supported girder

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34. A single rolling load of 8 kN rolls alone a girder of 15 m span. the absolute maximum bending moment will be

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35. While using three moments equation, a fixed end of a continuous beam is replaced by an additional span of

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36. In the slope deflection equations, the deformations are considered to be caused by

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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. A cantilever of length is subjected to a bending moment at its free end If EI is the rigidity of the section, the deflection of the free end, is?

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39. In frame structure, what transfers the load to columns?

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

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41. 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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42. 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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43. The live load for a sloping roof with slope 15°, where access is not provided to roof, is taken as

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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. The maximum permissible span of asbestos cement sheets is

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

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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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