Minimum spacing between horizontal parallel reinforcement of different sizes, should not be less than________________?

A. One diameter of thinner bar
B. One diameter of thicker bar
C. Twice the diameter of thinner bar
D. None of these

The stem of a cantilever retaining wall which retains earth level with top is 6 m. If the angle of repose and weight of the soil per cubic metre are 30° and 2000 kg respectively, the effective width of the stem at the bottom, is_______________?

A. 51.5
B. 52.5
C. 53.5
D. 54.5

According to the steel beam theory of doubly reinforced beams______________?

A. Tension is resisted by tension steel
B. Compression is resisted by compression steel
C. Stress in tension steel equals the stress in compression steel
D. All the above

If the diameter of the main reinforcement in a slab is 16 mm, the concrete cover to main bars is_____________?

A. 10 mm
B. 12 mm
C. 14 mm
D. 16 mm

The breadth of a ribbed slab containing two bars must be between______________?

A. 6 cm to 7.5 cm
B. 8 cm to 10 cm
C. 10 cm to 12 cm
D. 12 cm to 15 cm

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

The maximum diameter of a bar used in a ribbed slab, is______________?

A. 12 mm
B. 6 mm
C. 20 mm
D. 22 mm

If the depth of actual neutral axis of a doubly reinforced beam______________?

A. Is greater than the depth of critical neutral axis, the concrete attains its maximum stress earlier
B. Is less than the depth of critical neutral axis, the steel in the tensile zone attains its maximum stress earlier
C. Is equal to the depth of critical neutral axis; the concrete and steel attain their maximum stresses simultaneously
D. All the above

The stresses developed in concrete and steel in reinforced concrete beam 25 cm width and 70 cm effective depth, are 62.5 kg/cm2 and 250 kg/cm 2 respectively. If m = 15, the depth of its neutral axis is_______________?

A. 20 cm
B. 25 cm
C. 30 cm
D. 35 cm

is the pre-stressed force applied to the tendon of a rectangular pre-stressed beam whose area of cross section is and sectional modulus is . The maximum stress in the beam, subjected to a maximum bending moment , is_________________?

A. F = (p/a) + (z/m)
B. F = (a/p) + (m/z)
C. F = (p/a) + (m/z)
D. F = (p/a) + (m/6z)