Drenos

Drenos is a term used in Portuguese to refer to drains, the conduits and channels that convey wastewater or surface water away from a location. In plumbing and civil engineering, drenos describe a broad class of drainage elements used in buildings, streets, and landscapes to manage liquid flow and protect against water damage. The concept encompasses indoor and outdoor applications and is closely tied to local sanitary and stormwater systems.

Indoor drenos include components such as floor drains, sink drains, and shower drains, each connected to a trap and a wastewater line. Outdoor drenos cover drainage channels used on roofs, pavements, and in landscape grading, including trench drains, catch basins, and runoff channels. Drenos are designed to handle varying flow rates and are sized according to building codes, weather patterns, and site conditions.

Construction and materials for drenos vary by application but commonly include plastics such as PVC or ABS, as well as ductile iron, concrete, and HDPE. Key elements of a drenol system are the grate or cover, the conduit or channel, the trap or seal to prevent sewer gas, and proper venting where required. Installation prioritizes appropriate slope to maintain flow and prevent standing water, along with access for cleaning and maintenance.

Maintenance and regulations: Regular inspection and cleaning prevent blockages and odor issues. Systems should comply with local plumbing codes and environmental regulations, with attention to proper sealing, venting, and connection to sewer or stormwater networks. See also drainage, plumbing, and stormwater management.