Replaced deteriorated 2" P-trap assembly on shower drain line with new Schedule 40 PVC for improved flow and durability. Removed and replaced compromised 2 inch cast iron (Y-fitting) with a new fitting to restore proper drainage configuration. All connections secured using (5) heavy-duty no-hub couplings to ensure a watertight, code-compliant seal. Performed static (drop) test on shower system to verify integrity of all joints and confirm leak-free performance. System passed pressure test—no leaks observed.