Serviceability criterion for plate girder design

The serviceability criterion for plate girder design is based on the minimum thickness of the web. This criterion ensures that the plate girder is able to withstand the expected loads and deformations without experiencing excessive deflections or vibrations that could affect its functionality and performance.

Importance of serviceability criterion

The serviceability criterion is crucial in plate girder design as it ensures that the girder remains structurally sound and performs its intended function effectively. By considering the minimum thickness of the web, the criterion helps to prevent excessive deflections and vibrations that could lead to various issues such as excessive deformation, discomfort to users, and potential damage to other structural components.

Explanation of the correct answer - option C

Option C, which states that the serviceability criterion for plate girder design is based on the minimum thickness of the web, is the correct answer. The web of a plate girder is the vertical component that connects the top and bottom flanges. It plays a crucial role in transferring the shear forces between the flanges and providing overall stability to the girder.

The minimum thickness of the web is an important design consideration to ensure the strength and stability of the plate girder. It is determined based on the expected loads and the material properties. The thickness of the web should be sufficient to resist the shear forces, prevent buckling, and limit the deflections within acceptable limits.

If the web thickness is inadequate, the plate girder may experience excessive deflections, leading to deformations and vibrations that can compromise its serviceability and structural integrity. This can result in an unstable and unsafe structure.

Therefore, considering the minimum thickness of the web is essential to meet the serviceability requirements of the plate girder design. It ensures that the girder remains structurally stable, performs its intended function effectively, and maintains the required level of serviceability throughout its lifespan.

In conclusion, the serviceability criterion for plate girder design is based on the minimum thickness of the web. This criterion ensures that the plate girder remains structurally sound, performs its intended function effectively, and prevents excessive deflections and vibrations that could compromise its serviceability and structural integrity.