What is the minimum thickness of the plate required for an 8" diameter penetration?

To determine the minimum thickness of a plate for an 8-inch diameter penetration, one must consider the engineering standards used for structural integrity and safety. The thickness required often depends on factors such as the material being used, the load it is expected to bear, and any applicable codes or specifications.

In many engineering applications, including construction and mechanical design, the minimum thickness of a plate is specified based on the hole's diameter to ensure adequate support and prevent failure. For an 8-inch diameter penetration, .045 inch is often determined as a suitable thickness under various loading conditions and material types. This thickness provides a balance between strength and practical fabrication considerations, ensuring that the plate will not deform excessively or compromise the structure's safety.

The other options either do not meet the minimum standards typically outlined for this size penetration or suggest a thickness that exceeds what is necessary for the structural needs, which could lead to unnecessary material use and cost. Therefore, .045 inch is recognized as the minimum thickness that meets the requirements for safely accommodating an 8-inch diameter penetration.