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Civil Engineering :: Steel Structure Design

  1. The tensile strength of mild steel for bolts and nuts should not be less than

  2. A.
    32 kg/mm2
    B.
    36 kg/mm2
    C.
    40 kg/mm2
    D.
    44 kg/mm2

  3. A riveted joint may experience

  4. A.
    shear failure
    B.
    shear failure of plates
    C.
    bearing failure
    D.
    bearing failure of rivets
    E.
    all the above.

  5. With a percentage increase of carbon in steel, decreases its

  6. A.
    strength
    B.
    hardness
    C.
    brittleness
    D.
    ductility.

  7. In a built up beam actual bending compressive stress fbc is given by (when y1 is the distance of the edge of the beam from the neutral axis).


  8. In double lacing, the thickness t of flat lacing is

  9. A.
    t < 1/40 th length between inner end rivets
    B.
    t < 1/50 th length between inner end rivets
    C.
    t < 1/60 th length between inner end rivets
    D.
    t < 1/70 th length between inner end rivets
    E.
    none of these.

  10. When the length of a tension member is too long

  11. A.
    a wire rope is used
    B.
    a rod is used
    C.
    a bar is used
    D.
    a single angle is used.

  12. An imaginary line along which rivets are placed, is known as

  13. A.
    rivet line
    B.
    scrieve line
    C.
    back line
    D.
    gauge line
    E.
    all the above.

  14. The allowable stress in axial tension is generally kept less if thickness of the member is more than

  15. A.
    10 mm
    B.
    12 mm
    C.
    15 mm
    D.
    20 mm
    E.
    22 mm

  16. The maximum permissible slenderness ratio of compression member carrying dead and superimposed load, is

  17. A.
    180
    B.
    200
    C.
    250
    D.
    300
    E.
    350

  18. The safe working pressure for a spherical vessel 1.5 m diameter and having 1.5 cm thick wall not to exceed tensile stress 50kg/cm2 , is

  19. A.
    16 kg/cm2
    B.
    18 kg/cm2
    C.
    20 kg/cm2
    D.
    22 kg/cm2