A. 4 mm
B. 5 mm
C. 6 mm
D. 8 mm
Related Mcqs:
- 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 - longitudinal bars and lateral stirrups, is__________________?
A. Stress in concrete × area of concrete
B. Stress in steel × area of steel
C. Stress in concrete × area of concrete + Stress in steel × area of steel
D. None of these - If W is total load per unit area on a panel, D is the diameter of the column head, L is the span in two directions, then the sum of the maximum positive bending moment and average of the negative bending moment for the design of the span of a square flat slab, should not be less than________________?
A. WL/12 (L – 2D/3)²
B. WL/10 (L + 2D/3)²
C. WL/10 (L – 2D/3)²
D. WL/12 (L – D/3)² - If Ac, Asc and A are areas of concrete, longitudinal steel and section of a R.C.C. column and m and c are the modular ratio and maximum stress in the configuration of concrete, the strength of column is______________?
A. cAc + m cAsc
B. c(A – Asc) + m cAsc
C. c[A + (m – 1)ASC]
D. All the above - A column is regarded as long column if the ratio of its effective length and lateral dimension, exceeds_________________?
A. 10
B. 15
C. 20
D. 25 - A short column 20 cm × 20 cm in section is reinforced with 4 bars whose area of cross section is 20 sq. cm. If permissible compressive stresses in concrete and steel are 40 kg/cm2 and 300 kg/cm2, the Safe load on the column, should not exceed_______________?
A. 4120 kg
B. 41,200 kg
C. 412,000 kg
D. None of these - If is the net upward pressure on a square footing of side for a square column of side , the maximum bending moment is given by_________________?
A. B.M = pb (c – a)/4
B. B.M = pb (b – a)²/4
C. B.M = pb (b – a)²/8
D. B.M = pb (b + a)/8 - 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 - 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 – ) - 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
