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

45

40

30

35

45

40

30

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RCC Structures Design
If d and n are the effective depth and depth of the neutral axis respectively of a singly reinforced beam, the lever arm of the beam, is

n

d + n/3

d

d - n/3

n

d + n/3

d

d - n/3

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RCC Structures Design
The minimum head room over a stair must be

200 cm

205 cm

230 cm

210 cm

200 cm

205 cm

230 cm

210 cm

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RCC Structures Design
In a beam the local bond stress Sb, is equal to

Total perimeter of reinforcement/(Leaver arm × Shear force)

Leaver arm/(Bending moment × Total perimeter of reinforcement)

Leaver arm/(Shear force × Total perimeter of reinforcement)

Shear force/(Leaver arm × Total perimeter of reinforcement)

Total perimeter of reinforcement/(Leaver arm × Shear force)

Leaver arm/(Bending moment × Total perimeter of reinforcement)

Leaver arm/(Shear force × Total perimeter of reinforcement)

Shear force/(Leaver arm × Total perimeter of reinforcement)

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RCC Structures Design
The reinforced concrete beam which has width 25 cm, lever arm 40 cm, shear force 6t/cm², safe shear stress 5 kg/cm² and B.M. 24 mt,

Is over safe in shear

Is safe in shear

Is unsafe in shear

Needs redesigning

Is over safe in shear

Is safe in shear

Is unsafe in shear

Needs redesigning

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RCC Structures Design
If the permissible compressive stress for a concrete in bending is C kg/m², the modular ratio is

2300/2C

2800/3C

2800/C²

2800/C

2300/2C

2800/3C

2800/C²

2800/C

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RCC Structures Design

RCC Structures Design If d and n are the effective depth and depth of the neutral axis respectively of a singly reinforced beam, the lever arm of the beam, is

RCC Structures Design The minimum head room over a stair must be

RCC Structures Design In a beam the local bond stress Sb, is equal to

RCC Structures Design The reinforced concrete beam which has width 25 cm, lever arm 40 cm, shear force 6t/cm², safe shear stress 5 kg/cm² and B.M. 24 mt,

RCC Structures Design If the permissible compressive stress for a concrete in bending is C kg/m², the modular ratio is

RCC Structures Design
If d and n are the effective depth and depth of the neutral axis respectively of a singly reinforced beam, the lever arm of the beam, is

RCC Structures Design
The minimum head room over a stair must be

RCC Structures Design
In a beam the local bond stress Sb, is equal to

RCC Structures Design
The reinforced concrete beam which has width 25 cm, lever arm 40 cm, shear force 6t/cm², safe shear stress 5 kg/cm² and B.M. 24 mt,

RCC Structures Design
If the permissible compressive stress for a concrete in bending is C kg/m², the modular ratio is