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In a plate girder, the web is primarily designed to resist-
- a)tensional moment
- b)shear force
- c)bending moment
- d)diagonal buckling
Correct answer is option 'B'. Can you explain this answer?
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In a plate girder, the web is primarily designed to resist-a)tensiona...
The primary purpose of the web plate is to resist the shearing forces. These sections usually are more efficient in terms of steel weight than rolled sections, particularly when variable depth girders are used since they can be custom designed to suit requirements.
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In a plate girder, the web is primarily designed to resist-a)tensiona...
The correct answer to the question is option 'B', the web is primarily designed to resist shear force.
Explanation:
A plate girder is a type of beam that is commonly used in the construction of bridges, buildings, and other structures. It consists of a top flange, a bottom flange, and a web that connects the flanges together. The flanges are designed to resist bending moments, while the web is primarily designed to resist shear forces.
Here is a detailed explanation of why the web is primarily designed to resist shear force:
1. Introduction to Plate Girders:
- Plate girders are commonly used in construction due to their high strength and stiffness.
- They are made by welding or bolting together steel plates to form the top flange, bottom flange, and web.
2. Role of the Web:
- The web of a plate girder is the vertical component that connects the top and bottom flanges.
- It provides support and stability to the flanges, preventing them from buckling or failing under load.
3. Shear Forces in Plate Girders:
- Shear forces are forces that act parallel to the cross-section of a beam, causing it to deform or break.
- In plate girders, shear forces are transferred from the top flange to the bottom flange through the web.
4. Shear Transfer Mechanism:
- When a load is applied to a plate girder, shear forces are generated along the cross-section of the beam.
- The web of the plate girder resists these shear forces by transferring them from the top flange to the bottom flange.
- This transfer of shear forces is achieved through the shear flow mechanism, where the web acts as a shear connector between the flanges.
5. Design Considerations:
- The web of a plate girder is designed to be thick and stiff enough to resist the shear forces transferred through it.
- The thickness and depth of the web are determined based on the magnitude of the expected shear forces.
6. Other Functions of the Web:
- While the primary function of the web is to resist shear forces, it also provides additional support against buckling and diagonal compression.
Conclusion:
In conclusion, the web of a plate girder is primarily designed to resist shear forces. It acts as a shear connector between the top and bottom flanges, transferring the shear forces and preventing the flanges from failing under load.
Explanation:
A plate girder is a type of beam that is commonly used in the construction of bridges, buildings, and other structures. It consists of a top flange, a bottom flange, and a web that connects the flanges together. The flanges are designed to resist bending moments, while the web is primarily designed to resist shear forces.
Here is a detailed explanation of why the web is primarily designed to resist shear force:
1. Introduction to Plate Girders:
- Plate girders are commonly used in construction due to their high strength and stiffness.
- They are made by welding or bolting together steel plates to form the top flange, bottom flange, and web.
2. Role of the Web:
- The web of a plate girder is the vertical component that connects the top and bottom flanges.
- It provides support and stability to the flanges, preventing them from buckling or failing under load.
3. Shear Forces in Plate Girders:
- Shear forces are forces that act parallel to the cross-section of a beam, causing it to deform or break.
- In plate girders, shear forces are transferred from the top flange to the bottom flange through the web.
4. Shear Transfer Mechanism:
- When a load is applied to a plate girder, shear forces are generated along the cross-section of the beam.
- The web of the plate girder resists these shear forces by transferring them from the top flange to the bottom flange.
- This transfer of shear forces is achieved through the shear flow mechanism, where the web acts as a shear connector between the flanges.
5. Design Considerations:
- The web of a plate girder is designed to be thick and stiff enough to resist the shear forces transferred through it.
- The thickness and depth of the web are determined based on the magnitude of the expected shear forces.
6. Other Functions of the Web:
- While the primary function of the web is to resist shear forces, it also provides additional support against buckling and diagonal compression.
Conclusion:
In conclusion, the web of a plate girder is primarily designed to resist shear forces. It acts as a shear connector between the top and bottom flanges, transferring the shear forces and preventing the flanges from failing under load.
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In a plate girder, the web is primarily designed to resist-a)tensional momentb)shear forcec)bending momentd)diagonal bucklingCorrect answer is option 'B'. Can you explain this answer?
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