A. 1/4th of the span
B. 1/5th of the span
C. 1/6th of the span
D. 1/7th of the span
✅ The correct answer is option D.
RCC Structures Design MCQs
A pre-stressed rectangular beam which carries two concentrated loads W at L/3 from either end, is provided with a bent tendon with tension P such that central one-third portion of the tendon remains parallel to the longitudinal axis, the maximum dip h is_____________________?
A. WL/P
B. WL/2P
C. WL/3P
D. WL/4P
✅ The correct answer is option C.
The length of lap in tension reinforcement should not be less than the bar diameter × (actual tension / four times the permissible average bond stress) if it is more than_______________?
A. 18 bar diameters
B. 24 bar diameters
C. 30 bar diameters
D. 36 bar diameters
✅ The correct answer is option C.
The maximum permissible size of aggregates to be used in casting the ribs of a slab, is______________?
A. 5 mm
B. 7.5 mm
C. 10 mm
D. 15 mm
✅ The correct answer is option C.
The stresses developed in concrete and steel in reinforced concrete beam 25 cm width and 70 cm effective depth, are 62.5 kg/cm2 and 250 kg/cm 2 respectively. If m = 15, the depth of its neutral axis is_______________?
A. 20 cm
B. 25 cm
C. 30 cm
D. 35 cm
✅ The correct answer is option C.
The load stress of a section can be reduced by______________?
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.
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.
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.
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.
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.