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Spacing of stirrups in a rectangular beam is
- a)increased at the center of the beam
- b)kept constant throughout the length
- c)increased at the ends
- d)decreased towards the center of the beam
Correct answer is option 'A'. Can you explain this answer?
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Most Upvoted Answer
Spacing of stirrups in a rectangular beam isa)increased at the center ...
Reasoning:
The spacing of stirrups in a rectangular beam is increased at the center of the beam to provide additional support and prevent shear failure.
Explanation:
- Stirrups in Beams:
Stirrups are used in beams to resist shear forces and provide lateral support to the longitudinal reinforcement.
- Shear Force Distribution:
In a rectangular beam, the shear force is maximum at the supports and decreases towards the center of the beam.
- Stirrup Spacing:
To effectively resist the varying shear forces along the length of the beam, the spacing of stirrups is increased at the center where the shear force is maximum.
- Increased Support:
By increasing the spacing of stirrups at the center of the beam, additional support is provided to prevent shear failure and ensure the structural integrity of the beam.
- Constant Spacing:
Keeping the stirrup spacing constant throughout the length of the beam may not provide adequate support at locations where shear forces are higher.
- Decreased Spacing:
Decreasing the stirrup spacing towards the center of the beam would not be effective as it would reduce the amount of support where it is needed the most.
Therefore, the most effective approach is to increase the spacing of stirrups at the center of the beam to accommodate higher shear forces and ensure structural stability.
The spacing of stirrups in a rectangular beam is increased at the center of the beam to provide additional support and prevent shear failure.
Explanation:
- Stirrups in Beams:
Stirrups are used in beams to resist shear forces and provide lateral support to the longitudinal reinforcement.
- Shear Force Distribution:
In a rectangular beam, the shear force is maximum at the supports and decreases towards the center of the beam.
- Stirrup Spacing:
To effectively resist the varying shear forces along the length of the beam, the spacing of stirrups is increased at the center where the shear force is maximum.
- Increased Support:
By increasing the spacing of stirrups at the center of the beam, additional support is provided to prevent shear failure and ensure the structural integrity of the beam.
- Constant Spacing:
Keeping the stirrup spacing constant throughout the length of the beam may not provide adequate support at locations where shear forces are higher.
- Decreased Spacing:
Decreasing the stirrup spacing towards the center of the beam would not be effective as it would reduce the amount of support where it is needed the most.
Therefore, the most effective approach is to increase the spacing of stirrups at the center of the beam to accommodate higher shear forces and ensure structural stability.
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Community Answer
Spacing of stirrups in a rectangular beam isa)increased at the center ...
Assuming a simply supported reinforced concrete beam carrying uniformly distributed load of intensity w kN/m over the span length 'L'.
The maximum shear force would be produced at the supports and the shear force at the center of the span is zero.
∴ The maximum shear resistance is required at the ends of the supports and the minimum at the center of the span.
Shear reinforcement shall be provided in any of the following forms:
(a) Vertical stirrups
(b) The bent-up bar along with stirrups
(c) Inclined stirrups
Shear reinforcement shall be provided to carry a shear force equal to (Vu−τc×bd)
Note that, the shear reinforcement increases as the spacing among the stirrups decreases and vice versa.
As shear strength requirement is more at the supports than the center, the spacing of stirrups increases towards the center of the beam.
The maximum shear force would be produced at the supports and the shear force at the center of the span is zero.
∴ The maximum shear resistance is required at the ends of the supports and the minimum at the center of the span.
Shear reinforcement shall be provided in any of the following forms:
(a) Vertical stirrups
(b) The bent-up bar along with stirrups
(c) Inclined stirrups
Shear reinforcement shall be provided to carry a shear force equal to (Vu−τc×bd)
Note that, the shear reinforcement increases as the spacing among the stirrups decreases and vice versa.
As shear strength requirement is more at the supports than the center, the spacing of stirrups increases towards the center of the beam.
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Spacing of stirrups in a rectangular beam isa)increased at the center of the beamb)kept constant throughout the lengthc)increased at the endsd)decreased towards the center of the beamCorrect answer is option 'A'. Can you explain this answer?
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