civil engineering Mcqs
3501. 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_________________?
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A. 25%

B. 50%

C. 10%

D. 33.33%

3502. 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
3503. 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

3504. 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.

3505. 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

3506. 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?

3507. 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.
3508. 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

3509. 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?

3510. 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,

3511. 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

3512. 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%

3513. 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

3514. 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.

3515. 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>

3516. 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

3517. 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

3518. 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

3519. 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

3520. 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?

3521. 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.

3522. 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.
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A. ect your answer according to the codes given below.

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

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

D. A is true but R is false.

E. A is false but R is true.

3523. In a cavity wall, both leaves of which are load bearing, the effective thickness is taken as________________?
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A. sum of thickness of both leaves

B. two-third of the sum of thickness of both the leaves

C. actual thickness of the stronger leaf

D. larger of (B) and (C)
3524. The thickness of each leaf of a cavity wall shall not be less than_________________?
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A. 5 cm

B. 15 cm

C. 7.5 cm

D. 10 cm

3525. For earthquake resistant masonry buildings, the vertical distance between openings one above the other in a load bearing wall shall not be less than_________________?
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A. 60 cm

B. 50 cm

C. 75 cm

D. 100 cm

3526. The mode of failure of a very short masonry member having h/t ratio of less than 4 is by _______________?
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A. any of the above

B. buckling

C. shear

D. vertical tensile splitting

3527. If the ratio of center to center spacing of intersecting walls to actual thickness of intersecting wall is more than 20, then the stiffening coefficient for wall proper will be_________________?
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A. greater than 1

B. between 0 and 1

C. 1

D. 0

3528. 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. ?
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A. 95

B. 90

C. 100

D. 5

3529. 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________________?
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A. 20

B. 15

C. 19

D. 25

3530. The timber floor not spanning on the masonry wall but properly anchored to the wall gives________________?
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A. lateral restraint but not rotational restraint

B. rotational restraint but not lateral restraint

C. both lateral and rotational restraints

D. neither lateral nor rotational restraint

3531. The basic stress in masonry units having height to width ratio of 1.5 may be increased by a factor of_________________?
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A. 2

B. 1.4

C. 1.6

D. 1.2

3532. 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________________?
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A. 1.0 H

B. 0.85 H

C. 1.5 H

D. 0.75 H
3533. The bending stress in a wall or column subjected to effective vertical load need not be considered, if the eccentricity ratio is_________________?
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A. less than or equal to 1/24

B. more than 1/24

C. less than or equal to 1/6

D. less than or equal to 1/12

3534. Rich cement mortars are more liable to cracking as compared to lean mortars because rich mortars have________________?
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A. high shrinkage

B. less strength

C. both (A) and (B)

D. none of above

3535. If the horizontal cross-sectional area of a wall is 1200 cm2, then the basic stress shall be multiplied by a reduction factor equal to________________?
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A. 0.85

B. 0 6

C. 0.75

D. 0.95

3536. Which of the following represents a metamorphic rock? (1) slate (2) shale (3) quartzite . The correct answer is___________?
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A. only (3)

B. both (1) and (3)

C. both (2) and (3)

D. all (1), (2) and (3)

3537. The constituent of cement which is responsible for all the undesirable properties of cement is____________?
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A. tricalcium aluminate

B. tetra calcium alumino ferrite

C. tricalcium silicate

D. dicalcium silicate

3538. The most common admixture which is used to accelerate the initial set of concrete is______________?
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A. calcium chloride

B. gypsum

C. none of the above

D. calcium carbonate

3539. The lintels are preferred to arches because______________?
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A. arches are difficult in construction

B. arches require more headroom to span the openings like doors, windows etc.

C. all of the above

D. arches require strong abutments to withstand arch thrust

3540. The main constituent of cement which is responsible for initial setting of cement is_________________?
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A. all of the above

B. tricalcium silicate

C. tricalcium aluminate

D. dicalcium silicate

3541. Specific gravity for most of the building stones lies between_____________?
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A. 2.0 to 2.5

B. 1.5 to 2.0

C. 2.5 to 3.0

D. 3.0 to 3.5

3542. Number of bricks required for one cubic metre of brick masonry is____________?
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A. 400

B. 550

C. 450

D. 500
3543. Excess of silica in brick earth results in______________?
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A. enhancing the impermeability of bricks

B. none of the above

C. cracking and warping of bricks

D. loss of cohesion
3544. Which of the following trees yields hard wood ?
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A. shishum

B. chir

C. deodar

D. pine

3545. The trunk of tree left after cutting all the branches is known as_______________?
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A. plank

B. batten

C. baulk

D. log
3546. The type of pile which is driven at an inclination to resist inclined forces is known as______________?
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A. sheet pile

B. anchor pile

C. batter pile

D. friction pile

3547. The moisture content in a well seasoned timber is_______________?
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A. 10% to 12%

B. 4% to 6%

C. 15% to 20%

D. 100%

3548. Single flemish bond consists of___________________?
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A. stretcher bond facing and double flemish bond backing in each course

B. English bond facing and double flemish bond backing in each course

C. double flemish bond facing and Eng-lish bond backing in each course

D. double flemish bond facing and header bond backing in each course

3549. In which of the following pairs both trees yield soft wood ?
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A. chir and sal

B. chir and deodar

C. sal and teak

D. deodar and shishum

3550. Gypsum is a_________________?
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A. mechanically formed sedimentary rock

B. chemically precipitated sedimentary rock

C. metamorphic rock

D. igneous rock