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Civil Engineering :: Design of Steel Structures

  1. 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)

  2. A.

     zero

    B.

     ±0.2p

    C.

     ± 0.5 p

    D.

     ±0.7p


  3. The sway bracing is designed to transfer

  4. A.

     2Vi % of the top panel wind load to bottom bracing

    B.

     10% of the top panel wind load to bottom bracing

    C.

     25% of the top panel wind load to bottom bracing

    D.

     50% of the top panel wind load to bottom bracing


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

  6. A.

     ± 0.2

    B.

     ±0.5

    C.

     ± 0.7

    D.

     0


  7. The relation between intensity of wind pressure p and velocity of wind V is taken as

  8. A.

     pa V

    B.

     paV2

    C.

     p a (1/V)

    D.

     paV”2


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

  10. A.

     40mm

    B.

     60mm

    C.

     80mm

    D.

     100mm


  11. Steel tanks are mainly designed for

  12. A.

     weight of tank

    B.

     wind pressure

    C.

     water pressure

    D.

     earthquake forces


  13. The minimum thickness of plates in a steel stack should be

  14. A.

     4 mm

    B.

     5 mm

    C.

     6 mm

    D.

     8 mm


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

  16. A.

     1.5

    B.

     1.7

    C.

     2.0

    D.

     2.34


  17. Which of the following conditions is to be satisfied both in elastic and plastic analysis ?

  18. A.

     equilibrium condition

    B.

     yield condition

    C.

     plastic moment condition

    D.

     mechanism condition


  19. Bending compressive and tensile stresses respectively are calculated based on

  20. A.

     net area and gross area

    B.

     gross area and net area

    C.

     net area in both cases

    D.

     gross area in both cases