Which type of piping is utilized in perforated pipe systems?

The correct choice is that perforated pipe systems utilize piping drilled at intervals. This design allows for the effective drainage and dispersal of water. The holes or slots in the pipe allow water to seep through into the surrounding soil, which is essential for applications like drainage systems or when managing stormwater runoff.

Perforated pipes are strategically placed in areas where water needs to be managed, and the intervals at which they are drilled can vary based on the specific needs of the project, such as the volume of water expected, soil type, and the overall design of the system. This unique feature distinguishes perforated piping from solid piping systems, which would not allow water infiltration and are used for different purposes such as conveying water from one point to another without interaction with the surrounding environment.