civil engineering MCQs – Page 176

Practise multiple-choice questions from civil engineering for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

civil engineering Mcqs
3501. For designing masonry components of a structure, seismic forces provision in the design calculation is not necessary for buildings constructed in________________?
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A. Zone I, II, III and IV

B. Zone I, II and III

C. Zone I only

D. Zone I and II
3502. Minimum thickness of stiffening wall for 1 to 3 storeys shall not be less than_______________?
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A. 20 cm

B. 10 cm

C. 15 cm

D. 30 cm

3503. 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?
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A. ect your answer according to the codes give below.

3504. 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?
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A. using stronger bricks

B. providing buttresses at certain intervals

C. using a richer mortar

D. providing a deeper foundation

3505. Assertion A : For identical strength, a composite cement-lime mortar is preferred over cement mortar. Reason R : Composite cement-lime mortar has higher drying shrinkage than cement mortar_____________?
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A. ect your answer based on the codes given below Codes?

3506. The use of relatively weak mortar_______________?
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A. sider the following statements.

B. will result in reduction of stresses due to differential expansion of masonry units.</strong>

C. will accommodate movements due to loads and, cracking if any, and will be distributed as thin hair cracks which are less noticeable or harmful.
3507. Full restraint is provided by__________________?
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A. foundation footing of a wall

B. ) RCC slab with a minimum bearing of 10 cm on the wall </strong>

C. ect the correct statment.

D. timber floor spanning on the wall and anchored to the wall

3508. The mortars used for masonry construction are classified based on strength in IS 2250 and IS 1905 according to their designations L1,L2, H1, H2, M, M2.
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A. correct sequence of increasing order of their strengths is?

3509. Consider the following statements regarding provision of chases in masonry_________________?
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A. No chase should be permitted in a half brick load-bearing wall,

B. i) Chases should be provided near to bearings of beams and lintels.</strong>

C. ect the the statements ?

D. ) Vertical chases should not be closer than 2 m in any stretch of a wall,

3510. For masonry built in 1:1:6 cement-lime-sand mix mortar or equivalent, the horizontal shear stress permissible on the area of a mortar bed joint is_______________?
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A. 0.15 MPa

B. 0.1 MPa

C. 0.075 MPa

D. 0.125 MPa

3511. Direct load carrying capacity of a brick masonry wall standing freely as against when it supports RC slab will be___________________?
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A. more

B. less

C. the same in both the cases

D. 100%

3512. 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_______________?
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A. 5 percent

B. 7 percent

C. 6 percent

D. 4 percent

3513. 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.?
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A. ect your answer according to codes given below.

3514. Maximum slenderness ratio of load bearing walls for a dwelling having more than 2 storeys________________?
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A. correct statments is ?

B. shall not exceed 18 if cement lime mortar 1:2:9 is used

C. shall not exceed 12 if lime mortar is used

D. ) shall not exceed 24 if cement mortar 1:6 is used</strong>

3515. Which of the following will give higher ratio of brickwork strength to mortar strength ?
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A. 1 : % : 3

B. 1:01:06

C. 1:2:9

D. 1 : Vz: 4>/2

3516. Minimum compressive strength in N/mm2 for H1 type mortar used for masonry is_______________?
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A. 10

B. 3

C. 5

D. 7.5

3517. For earthquake resistant masonry buildings, where seismic coefficient is less than 0.08, the horizontal distance between two openings shall not be less than_________________?
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A. Ax height of shorter opening

B. Vt x height of shorter opening

C. Vi x height of longer opening

D. Vt x height of longer opening

3518. The effective height of free standing nonload bearing wall and column respectively will be_________________?
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A. 2.0H and 2.0H

B. 1.OH and 1.OH

C. 1.5Handl.5H

D. 2.0Handl.5H

3519. Cement mortars richer than 1 : 3 are not used in masonry because_________________?
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A. there is high shrinkage

B. there is no gain in strength of masonry

C. ) they are prone to segregation</strong>

D. ect the correct statements?

3520. 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?
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A. ect your answer according to the codes given below.