The 4-inch pipe also may be used in a home if it’s capturing two or more bathrooms. Plumbers and inspectors use pipe-sizing tables to tell them what size pipe needs to be used where.

Acquire an empty 5-gallon drywall bucket, 1- and 4-inch-diameter PVC pipe, a 4-inch flat PVC end cap, pipe fittings to reduce the 4-inch diameter down to 1 inch, a 1-inch tee fitting, PVC solvent ...

Make Square Cuts for Strong PVC Joints Make an improvised guide by screwing together scraps of 2×4. Saw using a handsaw with a blade that’s 3 or 4 inches wide. Note: Square pipe ends fit snugly ...