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.?

Related Mcqs:

1. Assertion A : For eccentricity ratio exceeding 1/6, effective thickness of masonry will get reduced. Reason R : For eccentricity ratio exceeding 1/6, there will be tension on one side of the member?

   Select your answer according to the codes give below.

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

2. Assertion A : Limiting value of slenderness ratio for a column is less than that of a wall. Reason R : A column can buckle around either of the two horizontal axes while a wall can buckle around only one axis.

   Select your answer according to the 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.

3. Maximum slenderness ratio of load bearing walls for a dwelling having more than 2 storeys________________?

   i) shall not exceed 12 if lime mortar is used
   ii) shall not exceed 18 if cement lime mortar 1:2:9 is used
   iii) shall not exceed 24 if cement mortar 1:6 is used
   the correct statments is ?

   A. (i) and (ii) are correct
   B. (ii) and (iii) are correct
   C. (i) and (iii) are correct
   D. (i) and (ii) and (iii) are correct

4. Where a structural component or a system is providing lateral support to five or more walls or columns, the lateral load to be resisted may be taken as_______________?

   A. 4 percent
   B. 5 percent
   C. 6 percent
   D. 7 percent

   of the total vertical load on the most heavily loaded wall or column in the group.

5. 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

6. The mode of failure of a very short masonry member having h/t ratio of less than 4 is by _______________?

   A. shear
   B. vertical tensile splitting
   C. buckling
   D. any of the above

7. Consider the following statements regarding bands to be provided for strengthening masonry work in masonry buildings constructed in zone III, IV and V?

   (i) Lintel band is provided at lintel level on partition walls,
   (ii) Gable band is provided at top of gable masonry below the purlins,
   (iii) The bands shall be to full width of the wall and not less than 7.5 cm in depth,
   (iv) The bands shall be made of reinforced concrete only.

   the correct statements are?
   A. (i) and (ii)
   B. (i) and (iii)
   C. (ii) and (iv)
   D. (ii) and (iii)

8. Assertion A : Lime based mortars give higher ratio of brickwork strength to mortar strength as compared to non-lime mortar. Reason R : Lime based mortars have lower bond strength as compared to non-lime mortars?

   Select your answer according to the 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.

9. The basic stress in masonry units having height to width ratio of 1.5 may be increased by a factor of_________________?

   A. 1.2
   B. 1.4
   C. 1.6
   D. 2.0

10. For designing masonry components of a structure, seismic forces provision in the design calculation is not necessary for buildings constructed in________________?

    A. Zone I only
    B. Zone I and II
    C. Zone I, II and III
    D. Zone I, II, III and IV