Civil Engineering – RCC design – Mock test – 1 Welcome to your RCC Structural Design Mock test - 1 Take an exciting test in RCC Structural Design You have only 20 mins to complete the test (20 Questions) Wish you all the best!!! Name Email 1) In a combined footing if shear stress exceeds 5 kg/cm2, the nominal stirrups provided are: A. 6 legged B. 8 legged C. 10 legged D. 12 legged E. none of these.2) As per I.S. 456 - 1978, the pH value of water shall be A. less than 6 B. equal to 6 C. not less than 6 D. equal to 73) The maximum area of tension reinforcement in beams shall not exceed A. 0.15% B. 1.5% C. 4% D. 1%4) The width of the flange of a T-beam should be less than A. one-third of the effective span of the T-beam B. distance between the centres of T-beam C. breadth of the rib plus twelve times the thickness of the slab D. least of the above.5) Cantilever retaining walls can safely be used for a height not more than A. 3 m B. 4 m C. 5 m D. 6 m E. 8 m6) Bottom bars under the columns are extended into the interior of the footing slab to a distance greater than A. 42 diameters from the centre of the column B. 42 diameters from the inner edge of the column C. 42 diameters from the outer edge of the column D. 24 diameter from the centre of the column7) The diameter of longitudinal bars of a column should never be less than A. 6 mm B. 8 mm C. 10 mm D. 12 mm E. none of these.8) 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/cm29) The thickness of base slab of a retaining wall generally provided, is A. one half of the width of the stem at the bottom B. one-third of the width of the stem at the bottom C. one fourth of the width of the steam at the bottom D. width of the stem at the bottom E. twice the width of the steam at the bottom.10) For a circular slab carrying a uniformly distributed load, the ratio of the maximum negative to maximum positive radial moment, is A. 1 B. 2 C. 3 D. 4 E. 511) Thickened part of a flat slab over its supporting column, is technically known as A. drop panel B. capital C. column head D. none of these.12) An R.C.C. beam not provided with shear reinforcement may develop cracks in its bottom inclined roughly to the horizontal at A. 25° B. 35° C. 45° D. 55° E. 60°13) The effective span of a simply supported slab, is A. distance between the centres of the bearings B. clear distance between the inner faces of the walls plus twice the thickness of the wall C. clear span plus effective depth of the slab D. none of these.14) Pick up the incorrect statement from the following: A. In the stem of a retaining wall, reinforcement is provided near the earth side B. In the toe slab of a retaining wall, rein forcement is provided at the bottom of the slab C. In the heel slab of a retaining wall, rein forcement is provided at the top of the slab D. None of these.15) The minimum cube strength of concrete used for a prestressed member, is A. 50 kg/cm2 B. 150 kg/cm2 C. 250 kg/cm2 D. 350 kg/cm2 E. 400 kg/cm216) The number of treads in a flight is equal to A. risers in the flight B. risers plus one C. risers minus one D. none of these.17) According to I.S. : 456 specifications, the safe diagonal tensile stress for M 150 grade concrete, is A. 5 kg/cm2 B. 10 kg/cm2 C. 15 kg/cm2 D. 20 kg/cm2 E. 25 kg/cm218) For initial estimate for a beam design, the width is assumed A. 1/15th of span B. 1/20th of span C. 1/25th of span D. 1/30th of span E. 1/40th of span.19) If the permissible compressive stress for a concrete in bending is C kg/m2, the modular ratio is A. 2800/C B. 2300/2C C. 2800/3C D. 2800/Csquare20) Design of a two way slab simply supported on edges and having no provision to prevent the corners from lifting, is made by A. Rankine formula B. Marcus formula C. Rankine Grashoff formula D. Grashoff formula E. Rankine-Marcus formula.