According to Georgia plumbing codes, what is the maximum length for a vent pipe?

In Georgia plumbing codes, the maximum length for a vent pipe is indeed 25 feet. This limitation is based on ensuring that the vent effectively maintains the proper functioning of the plumbing system by allowing air to enter and preventing a vacuum, which could disrupt the drainage system. A vent pipe that exceeds this length may not allow sufficient airflow, leading to poor drainage performance and potential issues like slow drainage or sewer gas entering the building. The specification is grounded in practical experience and safety considerations in plumbing design to ensure the system operates effectively and complies with health and building regulations.