What is the minimum diameter for floor drain waste outlets?

The minimum diameter for floor drain waste outlets is typically 2 inches, which is consistent with plumbing codes and standards designed to effectively handle wastewater. This size allows for the adequate flow of water and prevents clogs, ensuring that kitchen, bathroom, or laundry areas can drain effectively without risking backups. Larger drain sizes can be used, but the 2-inch diameter is a commonly accepted minimum that balances effectiveness with space considerations in plumbing layouts. Therefore, selecting a floor drain waste outlet with a diameter of 2 inches is appropriate for meeting standard drainage requirements while maintaining efficiency in waste disposal.