3-Bed Concrete Floor Plumbing Diagram for House on Slab 2026
A slab plumbing layout routes 3-inch or 4-inch Schedule 40 PVC main waste lines at a minimum 1/4-inch per foot slope beneath the aggregate base. Kitchen branch lines connect tailpiece and garbage disposal units through a 2-inch drain assembly, properly vented via an upstream vent pipe, terminating in a below-grade P-trap before the slab pour….
