A. f = (P/A) – (Z/M)
B. f = (A/P) – (M/Z)
C. f = (P/A) – (M/Z)
D. f = (P/A) – (M/6Z)
✅ The correct answer is option C.
RCC Structures Design MCQs
The design of heel slab of a retaining wall is based on the maximum bending moment due to______________?
A. Its own weight
B. Weight of the soil above it
C. Load of the surcharge, if any
D. All the above
✅ The correct answer is option D.
The minimum thickness of the cover at the end of a reinforcing bar should not be less than twice the diameter of the bar subject to a minimum of___________________?
A. 10 mm
B. 15 mm
C. 20 mm
D. 25 mm
✅ The correct answer is option D.
Dimensions of a beam need be changed if the shear stress is more than_______________?
A. 10 kg/cm2
B. 15 kg/cm2
C. 20 kg/cm2
D. 25 kg/cm2
✅ The correct answer is option C.
Spacing of stirrups in a rectangular beam, is__________________?
A. Kept constant throughout the length
B. Decreased towards the centre of the beam
C. Increased at the ends
D. Increased at the centre of the beam
✅ The correct answer is option D.
The maximum area of tension reinforcement in beams shall not exceed_______________?
A. 0.15 %
B. 1.5 %
C. 4 %
D. 1 %
✅ The correct answer is option C.
The horizontal portion of a step in a stairs case, is known as_________________?
A. Rise
B. Flight
C. Winder
D. Tread
✅ The correct answer is option D.
If the tendon is placed at an rectangular beam (sectional top edge)________________?
A. Is increased by PZ/e
B. Is increased by Pe/Z
C. Is decreased by Pe/Z
D. Remains unchanged
✅ The correct answer is option C.
In case the factor of safety against sliding is less than 1.5, a portion of slab is constructed downwards at the end of the heel slab, which is known as___________________?
A. A key
B. A cut-off wall
C. A rib
D. All the above
✅ The correct answer is option D.
An R.C.C. lintel is spanning an opening of 2 m span in a brick wall. The height of the roof is 2.9 m above the floor level and that of the opening is 2.1 m above the floor level. The lintel is to be designed for self weight plus_______________?
A. Triangular load of the wall
B. UDL of wall
C. UDL of wall + load from the roof
D. Triangular load + load from the roof
✅ The correct answer is option C.