Civil Engineering MCQs

Page No. 103

Minimum thickness of stiffening wall for 1 to 3 storeys shall not be less than_______________?


a10 cm


b15 cm


c20 cm


d30 cm


View Answer 10 cm

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?


a Both A and R are true and R is the correct explanation of A.


bBoth A and R are true but R is not the correct explanation of A.


cA is true but R is false.


d A is false but R is true.



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


aVt x height of shorter opening


bVt x height of longer opening


cAx height of shorter opening


dVi x height of longer opening



Water retentivity for brick masonry should not be less than__________________?


a50%


b 60%


c70%


d80%


View Answer 70%

Rich cement mortars are more liable to cracking as compared to lean mortars because rich mortars have________________?


ahigh shrinkage


b less strength


c both (A) and (B)


dnone of above


View Answer high shrinkage

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


a Lintel band is provided at lintel level on partition walls,


bGable band is provided at top of gable masonry below the purlins,


cThe bands shall be to full width of the wall and not less than 7.5 cm in depth,


dB and C


View Answer B and C

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. ?


a090


b095


c100


d105


View Answer 100

Cement mortars richer than 1 : 3 are not used in masonry because_________________?


athere is no gain in strength of masonry


bthere is high shrinkage


c they are prone to segregation


d(A) and (B) are correct



Consider the following statements regarding provision of chases in masonry_________________?


aNo chase should be permitted in a half brick load-bearing wall,


bVertical chases should not be closer than 2 m in any stretch of a wall,


chases should be provided near to bearings of beams and lintels.


d(A) and (C) are correct



For masonry built in 1:1:6 cement-lime-sand mix mortar or equivalent, the horizontal shear s


a0.15 MPa


b0.125 MPa


c0.1 MPa


d0.075 MPa


View Answer 0.15 MPa

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