RCC STRUCTURES DESIGN QUIZ

Is equal to the depth of critical neutral axis; the concrete and steel attain their maximum stresses simultaneously

Is less than the depth of critical neutral axis, the steel in the tensile zone attains its maximum stress earlier

All listed here

Is greater than the depth of critical neutral axis, the concrete attains its maximum stress earlier

h = (W/Aw) [(1 + sin φ)/(1 + sin φ)]

h = √(W/Aw) [(1 - sin φ)/(1 + sin φ)]²

h = (W/Aw) [(1 - sin φ)/(1 + sin φ)]

h = (W/Aw) [(1 - sin φ)/(1 + sin φ)]²

Width of the rib shall not be less than 7.5 cm

Clear spacing between ribs shall not be greater than 4.5 cm

All listed here

Overall depth of the slab shall not exceed four times the breadth of the rib

Half of its width

Equal to its width

One-fourth of its width

Three-fourth of its width

wh (1 - tan φ)/(1 + tan φ)

w (1 - cos φ)/h (1 + sin φ)

wh (1 - cos φ)/(1 + sin φ)

wh (1 - sin φ)/(1 + sin φ)

Remains below the slab

Remains within the flange

None of these

Coincides the geometrical centre of the beam

All listed here

A transverse plane section remains a plane after bending

Variation of stress in reinforcement due to changes in external loading is negligible

During deformation limits, Hook's law is equally applicable to concrete as well as to steel

230 cm

210 cm

200 cm

205 cm

2800/C

2300/2C

2800/C²

2800/3C

Bent inward at the floor level

All of the listed here

Continued up

Stopped just below the floor level and separate lap bars provided