Follow the system that carries wastewater away and protects fixture trap seals. Ten illustrated stages show how drains, traps, and vents come together inside a luxury home.
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Fixture locations, drain routes, vent paths, and cleanout access are coordinated before installation. Planning the system with the framing and finishes helps keep drainage routes practical and service points accessible.
A supported vertical waste stack carries discharge toward the building drain. The swept base connection changes direction smoothly, while the cleanout provides a route for future service equipment.
Branch drains join the main through directional fittings that guide flow downstream. Supports hold the piping in position while a consistent grade carries wastewater by gravity.
The shower drain connects to a P-trap that retains a water seal. Its outlet continues through a short trap arm to an upward vent connection before the drainage line turns downward, helping protect that seal.
The future sink trap arm will enter the horizontal side of an upright sanitary tee. The pipe above continues as a vent, while wastewater travels down through the drain below. The inlet stays capped during construction.
The washer discharges into an open standpipe above a P-trap. A short trap arm connects to an upright sanitary tee, with the vent rising above it and the waste line continuing down. The trap remains above the floor.
Individual dry vents rise above the fixtures before joining the common vent route. High connections leave the drainage system below, and any offsets are arranged so collected moisture can drain back into the system.
The vent continues to an open outdoor termination through the roof. A fitted flashing assembly seals the penetration while the pipe remains open to the atmosphere, away from building openings and air intakes.
Tested openings are securely closed and the system is prepared for a water test while joints remain exposed. This detail view shows the lower riser and connections; the fill point and upper test arrangement continue beyond the frame.
The finished sink connects through one smooth-wall P-trap and a short trap arm into the wall. The concealed vent connection was installed during rough-in. Final checks confirm drainage and inspect accessible joints for leakage.