What type of standpipe is designed for use by untrained personnel only?

The type of standpipe designed specifically for use by untrained personnel is known as Class II. These standpipes are typically equipped with hose and nozzle assemblies that make it easier for individuals without formal firefighting training to use them effectively. Class II standpipes are generally found in commercial and high-rise buildings and provide a straightforward method for occupants to engage in firefighting efforts until professional firefighters arrive.

These standpipes often come with hoses that are pre-connected and ready for immediate use, along with instructions for operation, ensuring that individuals can respond quickly in the event of a fire. This design emphasizes accessibility and ease of use, allowing untrained individuals to take action when necessary. In contrast, other classes of standpipes, such as Class I and III, are intended for use by trained firefighting personnel, who are equipped to handle more complex firefighting operations.