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Civil Engineering :: Design of Masonry Structures

  1. A free standing brick wall 20 cm thick is subjected to a wind pressure of 75 kg/m². The maximum height of wall from stability consideration is

  2. A.

     0.64 m

    B.

     0.96 m

    C.

     1.28 m

    D.

     1.5 m


  3. For masonry work with solid bricks, consistency of mortar should be

  4. A.

     5 to 8 cm

    B.

     9 to 13 cm

    C.

     14 to 18 cm

    D.

     19 to 23 cm


  5. Minimum thickness of stiffening wall for 1 to 3 storeys shall not be less than

  6. A.

     10 cm

    B.

     15 cm

    C.

     20 cm

    D.

     30 cm


  7. The thickness of each leaf of a cavity wall shall not be less than

  8. A.

     5 cm

    B.

     7.5 cm

    C.

     10 cm

    D.

     15 cm


  9. Water retentivity for brick masonry should not be less than

  10. A.

     50 %

    B.

     60 %

    C.

     70 %

    D.

     80 %


  11. For earthquake resistant masonry buildings, the vertical distance between openings one above the other in a load bearing wall shall not be less than

  12. A.

     50 cm

    B.

     60 cm

    C.

     75 cm

    D.

     100 cm


  13. For earthquake resistant masonry buildings, where seismic coefficient is less than 0.08, the horizontal distance between two openings shall not be less than

  14. A.

     Vt x height of shorter opening

    B.

     Vt x height of longer opening

    C.

     Ax height of shorter opening

    D.

     Vi x height of longer opening


  15. In the case of panel wall subjected to horizontal loads at right angles to the plane of the wall, with the mortar not leaner than Ml type, tensile stress in bending in the vertical direction may be allowed to the extent of

  16. A.

     0.4 kg/cm²

    B.

     0.7 kg/cm²

    C.

     1.0 kg/cm²

    D.

     1.2 kg/cm²


  17. Full restraint is provided by
    (i) Foundation footing of a wall
    (ii) Timber floor spanning on the wall and anchored to the wall
    (iii) RCC slab with a minimum bearing of 10 cm on the wall

  18. A.

     (i) and (iii) are correct

    B.

     (i) and (ii) are correct

    C.

     (ii) and (iii) are correct

    D.

     (i), (ii) and (iii) are correct


  19. Consider the following statements:
    A high lime content in a composite cement-lime mortar results in
    1. Slow hardening.
    2. Quick setting.
    3. Weaker mortar.

  20. A.

     2 and 3 are correct

    B.

     1 and 2 are correct

    C.

     1 and 3 are correct

    D.

     1, 2 and 3 are correct