What is the size of the yoke or bypass vent for a high-rise building?

In high-rise buildings, the yoke or bypass vent must be equal in size to the main vent to maintain proper airflow and pressure equalization throughout the plumbing system. This ensures effective venting and prevents the buildup of negative pressure, which could hinder drainage and lead to the potential for siphoning traps. Adequate venting is crucial in multi-story structures to accommodate variations in pressure caused by the height and complexity of the plumbing system. By matching the size of the yoke vent to that of the main vent, the system can better handle the demands placed on it by multiple fixtures operating simultaneously across different floors. This design approach enhances the overall functionality and safety of the plumbing system in high-rise buildings.