A. One- sixth of the effective span
B. Breadth of the rib + four times thickness of the slab
C. Breadth of the rib + half clear distance between ribs
D. Least of the above
✅ The correct answer is option D.
Civil Engineering
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2222. The diameter of main bars in R.C.C. columns, shall not be less than________________?
A. 6 mm
B. 8 mm
C. 10 mm
D. 12 mm
✅ The correct answer is option D.
2223. In testing a pile by load test, pile platform is loaded with one and half times the design load and a maximum settlement is noted. The load is gradually removed and the consequent rebound is measured. For a safe pile, the net settlement (i.e. total settlement minus rebound) per tonne of test load should not exceed________________?
A. 10 mm
B. 15 mm
C. 20 mm
D. 25 mm
✅ The correct answer is option D.
2224. To have pressure wholly compressive under the base of a retaining wall of width b, the resultant of the weight of the wall and the pressure exerted by the retained, earth should have eccentricity not more than________________?
A. b/3
B. b/4
C. b/5
D. b/6
✅ The correct answer is option D.
2225. If the sides of a slab simply supported on edges and spanning in two directions are equal, the maximum bending moment is multiplied by_________________?
A. 0.2
B. 0.3
C. 0.4
D. 0.5
✅ The correct answer is option D.
2226. A ribbed slab is provided for______________?
A. A plain ceiling
B. Thermal insulation
C. Acoustic insulation
D. All the above
✅ The correct answer is option D.
2227. The minimum cube strength of concrete used for a pre-stressed member, is________________?
A. 50 kg/cm2
B. 150 kg/cm 2
C. 250 kg/cm2
D. 350 kg/cm2
✅ The correct answer is option D.
2228. A foundation is called shallow if its depth, is________________?
A. One-fourth of its width
B. Half of its width
C. Three-fourth of its width
D. Equal to its width
✅ The correct answer is option D.
2229. In a cantilever retaining wall without a heel slab______________?
A. Thickness of the stem is kept same throughout
B. Base slab is made 10 cm thicker than the stem
C. Width of the base slab is kept 0.7 time the total height of the wall
D. All the above
✅ The correct answer is option D.
2230. A pre-stressed concrete member is preferred because___________________?
A. Its dimensions are not decided from the diagonal tensile stress
B. Large size of long beams carrying large shear force need not be adopted
C. Removal of cracks in the members due to shrinkage
D. All the above
✅ The correct answer is option D.