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

Related Mcqs:

1. A 200 mm thick brick masonry wall made of modular bricks carries an axial load of 30 kN/m from wall above and an eccentric load of 20 kN/m from RCC floor acting at a distance of 47.5 mm from the centre line of the wall. The resultant eccentricity ratio is A. B. C. D. ?

   A.090
   B.095
   C.100
   D.105

2. If H is the height of wall between centers of supports, then the effective height of wall where concrete floors have a bearing on wall irrespective of the direction of span will be________________?

   A. 0.75 H
   B. 0.85 H
   C. 1.0 H
   D. 1.5 H

3. A 200 mm thick wall made of modular bricks is 5 m long between cross walls and 3.8 m clear height between RCC slabs at top and bottom. The slenderness ratio of the wall is________________?

   A. 15
   B. 19
   C. 20
   D. 25

4. The effective height of free standing nonload bearing wall and column respectively will be_________________?

   A. 1.OH and 1.OH
   B. 1.5Handl.5H
   C. 2.0Handl.5H
   D. 2.0H and 2.0H

   where H is the height of wall or column between centers of supports.

5. Direct load carrying capacity of a brick masonry wall standing freely as against when it supports RC slab will be___________________?

   A. more
   B. less
   C. the same in both the cases
   D. 100%

6. 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 _______________?

   A. 0.4 kg/cm2
   B. 0.7 kg/cm2
   C. 1.0 kg/cm2
   D. 1.2 kg/cm2

7. Assertion A : From consideration of structural soundness and economy of design, most codes control the maximum slenderness ratio of masonry walls and columns. Reason R : By controlling the maximum slenderness ratio, failure is by excessive stress and not by buckling.?

   Select your answer according to codes given below.

   A. Both A and R are true and R is the correct explanation of A.
   B. Both A and R are true but R is not .the correct explanation of A.
   C. A is true but R is false.
   D. A is false but R is true.

8. For strengthening a 50 m long and 5 m high straight compound wall built in brick work, which one of the following would be most suitable?

   A. providing buttresses at certain intervals
   B. providing a deeper foundation
   C. using a richer mortar
   D. using stronger bricks

9. If the eccentricity ratio is more than 1/24, then increase in the permissible stress in the design of wall subjected to eccentric loading as per code is_________________?

   A. 10%
   B. 25%
   C. 33 1/3%
   D. 50%

10. The bending stress in a wall or column subjected to effective vertical load need not be considered, if the eccentricity ratio is_________________?

    A. less than or equal to 1/24
    B. less than or equal to 1/6
    C. more than 1/24
    D. less than or equal to 1/12