A. Decreasing the lever arm
B. Increasing the total perimeter of bars
C. Replacing larger bars by greater number of small bars
D. Replacing smaller bars by greater number of greater bars
✅ The correct answer is option C.
RCC Structures Design MCQs
72. For normal cases, stiffness of a simply supported beam is satisfied if the ratio of its span to its overall depth does not exceed________________?
A. 10
B. 15
C. 20
D. 25
✅ The correct answer is option C.
73. Though the effective depth of a T-beam is the distance between the top compression edge to the centre of the tensile reinforcement, for heavy loads, it is taken as__________________?
A. 1/8th of the span
B. 1/10th of the span
C. 1/12th of the span
D. 1/16th of the span
✅ The correct answer is option C.
74. Distribution of shear intensity over a rectangular section of a beam, follows_________________?
A. A circular curve
B. A straight line
C. A parabolic curve
D. An elliptical curve
✅ The correct answer is option C.
75. The modular ratio m of a concrete whose permissible compressive stress is C, may be obtained from the equation.
A. m = 700/3C
B. m = 1400/3C
C. m = 2800/3C
D. m = 3500/3C
✅ The correct answer is option C.
76. If A is the area of the foundation of a retaining wall carrying a load W and retaining earth of weight w per unit volume, the minimum depth (h) of the foundation from the free surface of the earth, is )/(1 + sin )]_________________?
A. h = (W/Aw) [(1 –
B. h = (W/Aw) [(1 + )/(1 + sin )]
C. h = (W/Aw) [(1 – )/(1 + sin )]²
D. h W/Aw) [(1 – )/(1 + sin )]²
✅ The correct answer is option C.
77. If depth of slab is 10 cm, width of web 30 cm, depth of web 50 cm, centre to centre distance of beams 3 m, effective span of beams 6 m, the effective flange width of the beam, is________________?
A. 200 cm
B. 300 cm
C. 150 cm
D. 100 cm
✅ The correct answer is option C.
78. If the ratio of the span to the overall depth does not exceed 10, the stiffness of the beam will ordinarily be satisfactory in case of a__________________?
A. Simply supported beam
B. Continuous beam
C. Cantilever beam
D. None of these
✅ The correct answer is option C.
79. Long and short spans of a two way slab are l and l and load on the slab acting on strips parallel to lx and ly be wx and wy respectively. Accordingy to xRankine Grashoff theory___________________?
A. (wx/wy) = (ly/lx)
B. (wx/wy) = (ly/lx)²
C. (wx/wy) = (ly/lx)4
D. None of these
✅ The correct answer is option C.
80. The minimum clear cover for R.C.C. columns shall be_________________?
A. Greater of 40 mm or diameter
B. Smaller of 40 mm or diameter
C. Greater of 25 mm or diameter
D. Smaller of 25 mm or diameter
✅ The correct answer is option C.