The home sewer.  All the drains in the House connected to the main drain, which are outside the Foundation.  The main drain connects a septic tank or a public sewer stub on the properties line.  The size of the connecting pipe specify that most local codes.

The pipe size for a single family dwelling is usually 4 inches ID (inside diameter).  Codes listed also the kind pipe–usually vitrified clay, cast iron, plastic or bituminized fiber.  Clay pipe, together with no hub bands or compression.

Mortar joints, which was common in older homes, meet no longer code specifications.  The House sewage must be at least 10 meters from the water supply pipe or 12 inches below if the two in the same trench.  The depth of the trench depends on the climate and location of the septic tank inlet or public sewer stub.  The sewer pipe must slope 1/4 inch per foot.

The DWV system.  Also known as the sanitation system, includes the DWV-system all sewage and waste pipes in and under the House, as well as the ventilation openings.  The DWV-system is completely independent of the water supply and contractors usually install it first.  The DWV-system is non-pressurized; water and waste management move in relation to gravity.

For this reason, the system requires careful installation DWV.  “Upstream” and “downstream” are important locations; your position in the mind.  The rules for DWV system are strict.  Precise local codes to protect public health.  All requirements regarding appropriate pipe size, orientation, Trap location, slope and furniture are aware strategies that keep contaminants–liquid, solid, or gas–from the House.

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