NWA Residential Plumbing: The Rough-in Blueprint

This course provides a technical walkthrough of the residential plumbing rough-in phase within Northwest Arkansas. It begins with the challenges of sub-slab groundworks in the rocky terrain of the Ozarks. Participants will learn the physical requirements for trenching through chert and limestone and the importance of using proper bedding materials like pea gravel to protect PVC lines. The instruction covers the Arkansas Plumbing Code, focusing on the quarter-inch per foot slope rule for drainage and the precise measurements needed before concrete is poured. This phase establishes the foundation for the entire waste system, emphasizing accuracy in a region where geological factors make corrections difficult and costly. The series also examines the top-out phase, including venting logic and water supply installation. It details Arkansas Stack requirements, comparing wet and dry venting while addressing local restrictions on air admittance valves. For the supply side, the course covers PEX-A and PEX-B tubing, manifold systems, and the necessity of 100 PSI pressure tests to identify leaks before drywall installation. Additionally, the instruction covers code-compliant methods for drilling and notching studs to maintain structural integrity. The final modules prepare you for municipal inspections in cities like Fayetteville and Bentonville, focusing on fire-stopping, pipe strapping, and the five-pound air test required for a successful rough-in inspection.