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As per IS-456: 2000, Side face reinforcemnet shall be provided along the two faces of a reinforced concrete beam, when the depth of the web exceeds
- a)500 mm
- b)750 mm
- c)250 mm
- d)400 mm
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
As per IS-456: 2000, Side face reinforcemnet shall be provided along t...
Side face reinforcement:
Side face reinforcement shall be provided as per CI. 26.5.1.3 and 26.5.17(6) of IS 456:2000
Side face reinforcement shall be provided as per CI. 26.5.1.3 and 26.5.17(6) of IS 456:2000
- Beam depth > 450 mm (if beam subjected to torsion)
- Beam depth > 750 mm (if beam not subjected to torsion)
- Provide @ 0.1% of web area and distribute it equally on both side faces
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As per IS-456: 2000, Side face reinforcemnet shall be provided along t...
Explanation:
As per the Indian Standard code IS-456: 2000, side face reinforcement is required to be provided along the two faces of a reinforced concrete beam when the depth of the web exceeds 750 mm.
Reason for Side Face Reinforcement:
Side face reinforcement is provided in reinforced concrete beams to improve their shear strength and to prevent shear failure. It is particularly important when the depth of the web exceeds a certain limit.
Code Requirement:
According to IS-456: 2000, the depth of the web is defined as the clear distance between the flanges. When this depth exceeds 750 mm, side face reinforcement is mandatory.
Importance of Side Face Reinforcement:
- Shear Strength: Side face reinforcement helps in increasing the shear strength of the beam by providing additional resistance against shear forces.
- Preventing Shear Failure: Beams without side face reinforcement are prone to shear failure, especially when the depth of the web is large. Side face reinforcement helps in preventing this failure mode.
- Ductility and Durability: Side face reinforcement enhances the ductility and durability of the beam by improving its resistance to cracking and deformation.
Design Considerations:
When side face reinforcement is required, it is designed based on the shear force and the grade of concrete. The reinforcement is typically provided in the form of vertical stirrups or bent-up bars along the two faces of the beam.
Conclusion:
In summary, as per IS-456: 2000, side face reinforcement is necessary when the depth of the web in a reinforced concrete beam exceeds 750 mm. This requirement is essential to ensure the structural integrity and safety of the beam by enhancing its shear strength and preventing shear failure.
As per the Indian Standard code IS-456: 2000, side face reinforcement is required to be provided along the two faces of a reinforced concrete beam when the depth of the web exceeds 750 mm.
Reason for Side Face Reinforcement:
Side face reinforcement is provided in reinforced concrete beams to improve their shear strength and to prevent shear failure. It is particularly important when the depth of the web exceeds a certain limit.
Code Requirement:
According to IS-456: 2000, the depth of the web is defined as the clear distance between the flanges. When this depth exceeds 750 mm, side face reinforcement is mandatory.
Importance of Side Face Reinforcement:
- Shear Strength: Side face reinforcement helps in increasing the shear strength of the beam by providing additional resistance against shear forces.
- Preventing Shear Failure: Beams without side face reinforcement are prone to shear failure, especially when the depth of the web is large. Side face reinforcement helps in preventing this failure mode.
- Ductility and Durability: Side face reinforcement enhances the ductility and durability of the beam by improving its resistance to cracking and deformation.
Design Considerations:
When side face reinforcement is required, it is designed based on the shear force and the grade of concrete. The reinforcement is typically provided in the form of vertical stirrups or bent-up bars along the two faces of the beam.
Conclusion:
In summary, as per IS-456: 2000, side face reinforcement is necessary when the depth of the web in a reinforced concrete beam exceeds 750 mm. This requirement is essential to ensure the structural integrity and safety of the beam by enhancing its shear strength and preventing shear failure.
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