A reinforced concrete cantilever beam is 3.6 m long, 25 cm wide and has its lever arm 40 cm. It carries a load of 1200 kg at its free end and vertical stirrups can carry 1800 kg. Assuming concrete to carry one-third of the diagonal tension and ignoring the weight of the beam, the number of shear stirrups required, is

RCC Structures Design
A reinforced concrete cantilever beam is 3.6 m long, 25 cm wide and has its lever arm 40 cm. It carries a load of 1200 kg at its free end and vertical stirrups can carry 1800 kg. Assuming concrete to carry one-third of the diagonal tension and ignoring the weight of the beam, the number of shear stirrups required, is

35

30

40

45

35

30

40

45

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RCC Structures Design
With usual notations the depth of the neutral axis of a balanced section, is given by

mc/t = (d - n)/n

t/mc = (d + n)/n

t/mc = (d - n)/n

mc/t = n/(d - n)

mc/t = (d - n)/n

t/mc = (d + n)/n

t/mc = (d - n)/n

mc/t = n/(d - n)

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RCC Structures Design
For initial estimate for a beam design, the width is assumed

1/15th of span

1/30th of span

1/25th of span

1/20th of span

1/15th of span

1/30th of span

1/25th of span

1/20th of span

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RCC Structures Design
For a ribbed slab

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

Clear spacing between ribs shall not be greater than 4.5 cm

Width of the rib shall not be less than 7.5 cm

All listed here

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

Clear spacing between ribs shall not be greater than 4.5 cm

Width of the rib shall not be less than 7.5 cm

All listed here

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RCC Structures Design
Pick up the assumption for the design of a pre-stressed concrete member from the following:

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

A transverse plane section remains a plane after bending

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

All listed here

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

A transverse plane section remains a plane after bending

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

All listed here

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RCC Structures Design
If depth of slab is 10 cm, width of web 30 cm, depth of web 50 cm, centre to centre distance of beams 3 m, effective span of beams 6 m, the effective flange width of the beam, is

300 cm

100 cm

150 cm

200 cm

300 cm

100 cm

150 cm

200 cm

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RCC Structures Design

RCC Structures Design With usual notations the depth of the neutral axis of a balanced section, is given by

RCC Structures Design For initial estimate for a beam design, the width is assumed

RCC Structures Design For a ribbed slab

RCC Structures Design Pick up the assumption for the design of a pre-stressed concrete member from the following:

RCC Structures Design If depth of slab is 10 cm, width of web 30 cm, depth of web 50 cm, centre to centre distance of beams 3 m, effective span of beams 6 m, the effective flange width of the beam, is

RCC Structures Design
With usual notations the depth of the neutral axis of a balanced section, is given by

RCC Structures Design
For initial estimate for a beam design, the width is assumed

RCC Structures Design
For a ribbed slab

RCC Structures Design
Pick up the assumption for the design of a pre-stressed concrete member from the following:

RCC Structures Design
If depth of slab is 10 cm, width of web 30 cm, depth of web 50 cm, centre to centre distance of beams 3 m, effective span of beams 6 m, the effective flange width of the beam, is