A vent may not be required on a basement floor drain if the floor drain is located within 5 feet of a stack but not farther than 20 feet. How far can the floor drain be located from the point where it connects to the house drain?

The correct answer indicates that a floor drain may be positioned 10 feet away from the point where it connects to the house drain in this specific scenario. This is based on plumbing codes that facilitate proper drainage while allowing for adequate venting in residential constructions.

When a floor drain is located within 5 feet of a stack, it is permissible to operate without a vent due to the close proximity, allowing air pressure to stabilize as water drains. However, as you assess the distance from the drain to the point of connection to the house drain, the code stipulations generally permit this connection to be 10 feet away under the conditions described.

The connection must be made within a reasonable distance to ensure that wastewater can drain effectively into the sewer system without the risk of trap siphoning or air pressure issues, which could lead to odors or drainage problems. Thus, the 10 feet threshold aligns with the established plumbing practices aimed at maintaining a functional and sanitary drainage system in residential plumbing.