Top 250+ Solved RCC Structures Design MCQ Questions Answer
Q. For initial estimate for a beam design, the width is assumed
a. 1/15th ofspan
b. 1/20th ofspan
c. 1/25th ofspan
d. 1/30th ofspan
Q. If the length of a combined footing for two columns l metres apart is L and the projection on the left side of the exterior column is x, then the projection y on the right side of the exterior column, in order to have a uniformly distributed load, is (where is the distance of centre of gravity of column loads).
a. y = L - (l - )
b. y = L/2 + (l - )
c. y = L/2 - (l + )
d. y = L/2 - (l - )
Q. If the tendon is placed at an eccentricity e below the centroidal axis of the longitudinal axis of a rectangular beam (sectional modulus Z and stressed load P in tendon) the stress at the extreme top edge
a. Is increased byPZ/e
b. Is increased byPe/Z
c. Is decreased by Pe/Z
d. Remainsunchanged
Q. The Young's modulus of elasticity of steel, is
a. 150 KN/mm2
b. 200 KN/mm2
c. 250 KN/mm2
d. 275 KN/mm2
Q. 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. Grashoffformula
Q. 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
Q. As per IS : 456, the reinforcement in a column should not be less than
a. 0.5% and not more than 5% of cross-sectional area
b. 0.6% and not more than 6% of cross-sectional area
c. 0.7% and not more than 7% of cross-sectional area
d. 0.8% and not more than 8% of cross-sectional area
Q. The allowable tensile stress in mild steel stirrups, reinforced cement concrete, is
a. 1400 kg/cm2
b. 190 kg/cm2
c. 260 kg/cm2
d. 230 kg/cm2
Q. 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 diametersfrom the inner edge of the column
c. 42 diametersfrom the outer edge ofthe column
d. 24 diametersfrom the centre of the column
Q. Pick up the assumption for the design of a pre-stressed concrete member from the following:
a. A transverse plane section remains a plane afterbending
b. During deformation limits, Hook'slaw is equally applicable to concrete as well asto steel
c. Variation of stress in reinforcement due to changes in external loading is negligible
d. All the above
Q. The advantage of reinforced concrete, is due to
a. Monolithic character
b. Fire-resisting and durability
c. Economy because of less maintenance cost
d. All the above
Q. An R.C.C. column is treated as short column if its slenderness ratio is less than
a. 30
b. 35
c. 40
d. 50
Q. The zone in which transverse bending is likely to occur may be obtained by drawing aline from the
a. 30°
b. 45°
c. 60°
d. None of these
Q. The thickness of the topping of a ribbed slab, varies between
a. 3 cm to 5 cm
b. 5 cm to 8 cm
c. 8 cm to 10 cm
d. 12 cm to 15 cm