How Do You Vent The Plumbing System?
Basic Plan: The part of the DWV (drain-waste-vent) system that is least visible happens to be the one that is most closely regulated by plumbing codes, because it is designed to deal with health hazards. Whether you are adding a new fixture, remodeling a bathroom, or building a completely new bath, a basic knowledge of the venting system is essential to your planning. Although the information given here is standard, it is superseded by your local code, which may require that a professional plan or check your venting system. Soil stacks and core areas: Whenever possible, cluster the plumbing fixtures around the soil stack, since this saves on the cost of material and labor. If you have more fixtures in the house than can be conveniently grouped into a single core area, you may need a second vent stack. A stack has two components: The soil stack, which carries waste and drain water; and the vent stack which draws air from the roof, but carries no waste or water. Dry and wet venting: All
