Final answer:
The minimum size for a dirt pocket diameter is not explicitly provided, but older guidelines suggest 5 inches and newer recommendations are as high as 8 diameters wide. Specific engineering standards should guide the exact size.
Step-by-step explanation:
The minimum size of a dirt pocket diameter in engineering systems, such as piping, could vary based on specific context or engineering standards, but it is generally recommended to have a dirt pocket that is large enough to capture and contain debris within the system without causing blockages or maintenance issues. According to an older 'rule of thumb', a dirt pocket diameter could be about 5 inches side-to-side and 7-8 inches deep. However, newer recommendations suggest going as large as 8 diameters side-to-side and 15 diameters deep. While the provided information does not specify a precise minimum, a safe bet would be to consider the dirt pocket diameter size based on these guidelines. It's also important to consider any specific engineering calculations or standards relevant to the particular system being designed or maintained.