pystyviemäreistä

Pystyviemäri, known in English as a stack pipe or soil stack, is a vertical drainage pipe that carries waste from one or more fixtures, such as toilets, sinks, and showers, down through a building's plumbing system to the main horizontal drain or sewer line. This essential component of a building's sanitation system is designed to transport both solid and liquid waste efficiently.

The primary function of a pystyviemäri is to create a sealed pathway for waste removal, preventing the escape of foul odors and harmful gases into the building's living spaces. It connects directly to the sanitary sewer system, ensuring that all waste is transported away from the building for proper treatment.

Ventilation is a crucial aspect of the pystyviemäri system. A vent pipe, often connected to the top of the pystyviemäri, extends to the outside atmosphere, typically through the roof. This vent pipe allows air to enter the drainage system, which equalizes the pressure. Without proper ventilation, a vacuum could form, causing water to be siphoned out of the fixture traps (like the U-bend under a sink), allowing sewer gases to enter the building.

The design and installation of pystyviemärit must adhere to local building codes and plumbing regulations to ensure safety and functionality. Materials commonly used for pystyviemärit include cast iron, PVC, and ABS plastic, chosen for their durability and resistance to corrosion. Blockages in a pystyviemäri can lead to significant plumbing issues, including backups and foul odors, necessitating prompt attention and professional maintenance.