A linear drainage system consisting of a channel and grate that collects and directs surface water runoff in paved areas.

A trench drain is a linear drainage system consisting of a channel and grate that collects and directs surface water runoff in paved areas, serving as an essential infrastructure component that prevents water accumulation and manages stormwater in parking lots, roadways, and pedestrian areas. This fundamental drainage solution consists of a precast concrete, polymer concrete, or formed-in-place concrete channel with a removable grate or cover that allows water to enter while supporting traffic loads and providing safe passage for vehicles and pedestrians. Trench drains are critical components in site drainage systems where they intercept sheet flow, prevent ponding, protect pavement integrity, and direct water to collection systems, making them indispensable elements for maintaining safe, functional surfaces in commercial, industrial, and residential developments where effective water management is essential for property protection and user safety.

Trench drains are utilized in various drainage applications including parking lots and driveways where they collect runoff from large paved surfaces and prevent water damage, loading docks and industrial areas where they handle wash-down water and prevent slip hazards, pedestrian plazas and walkways where they manage rainwater while maintaining safe walking surfaces, airport runways and taxiways where they prevent water accumulation that could affect aircraft operations, sports facilities and recreational areas where they drain playing surfaces and spectator areas, and residential applications including pool decks, patios, and garage entrances where they prevent water intrusion and surface damage. Each application requires appropriate drain sizing, load ratings, and installation methods based on water volumes and traffic requirements.

The design and construction of trench drain systems include channel materials such as precast concrete for durability and cost-effectiveness, polymer concrete for chemical resistance and lighter weight, stainless steel for corrosive environments and food processing areas, and fiberglass for lightweight applications and chemical resistance, grate materials including ductile iron for heavy-duty applications, steel for moderate loads, aluminum for lightweight requirements, and composite materials for specific performance needs, load classifications ranging from pedestrian-only to aircraft loading based on expected traffic, and connection systems that integrate with storm drainage infrastructure and outlet systems. Proper design ensures adequate capacity and structural performance.

Fun Fact: Ancient Roman engineers used linear drainage systems similar to modern trench drains in their roads and public spaces, demonstrating that effective linear drainage has been recognized as essential infrastructure for over 2,000 years.

• Area Drain
• Foundation Drain
• French Drain