The trench drain is one of the core structural components of drainage systems. Since the early 1900s, Neenah Foundry has produced high-quality cast-iron trench drains, including trench frames, pans, and grates.
Our commitment to innovation, durability, and aesthetics has positioned Neenah Foundry as a leader in the trench drain manufacturing space, and our low-maintenance solutions are rated for both vehicle traffic and airports.
What Are Trench Drains?
A trench drain is a linear surface drainage structure that collects and conveys water along its length. A trench drain system can be installed flush with the surrounding pavement or concrete. It is equipped with a trench drain cover or trench drain grate to allow water entry while protecting the underlying channel.
Trench frames support the drainage system while securing trench grates or covers. They keep the trench cover and drains aligned while supporting longevity. Cast iron is the preferred material for trench frames and grates, due to its strength and durability.
What Are Trench Drains Used For?
Trench drainage systems:
- Support surface drainage
- Collect and channel runoff in high-flow areas
- Maintain structural integrity
- Enable safe drainage in areas with vehicle or aircraft traffic
Neenah Foundry’s trench drain components are installed in the following settings:
- Roadways and streets
- Parking facilities
- Industrial and commercial sites
- Airports, hangars, and airfields
- Ports and transportation hubs
Our broad selection of cast iron trench systems ensure customers can find the ideal components for their intended use cases.
Types of Trench Systems & Applications
Neenah Foundry’s trench systems are ideal for a couple of use cases.
Traffic-Rated Trench Systems
Traffic-rated solutions that meet AASHTO H-20 or HS-25 standards are engineered to withstand repeated vehicular loading from passenger cars and heavy commercial vehicles. The trench frame works in conjunction with heavy-duty trench grates to effectively distribute loads into the surrounding pavement. Cast iron provides the rigidity and strength required to ensure long-term structural performance.
Airport-Rated Trench Systems
Airport-rated trench systems must meet significantly higher load demands and FAA requirements. These solutions are engineered for runways, taxiways, hangars, and apron areas where extreme loading conditions are present. Neenah Foundry’s precision engineering delivers reliable structural performance under heavy aircraft traffic.
Key Features of Neenah Foundry Trench Systems
Our solutions provide customers with several benefits.
Cast Iron Strength & Longevity
Neenah Foundry manufactures our trench drain systems using cast iron because of its resistance to cracking, deformation, and surface wear. It maintains its structural integrity and offers a long service life.
Load Transfer & Structural Performance
Our trench frames distribute loads from the grate into the surrounding concrete or asphalt. Proper load transfer prevents cracking and premature pavement failure.
Aesthetic Design
Neenah Foundry offers decorative trench drain grates that combine functionality with style. Available in a variety of designs, they enhance the aesthetics of streetscapes, outdoor malls, plazas, and other urban or commercial projects.
Low-Maintenance Lifecycle
Cast iron requires minimal maintenance over decades of use. It resists corrosion and weathering. Since our trench grates and frames protect the surrounding pavement, they prevent costly structural repairs.
Why Choose Neenah Foundry for Trench Systems?
Neenah Foundry brings more than a century of experience in manufacturing cast iron trench systems for infrastructure and industrial projects. Key advantages include:
- Proven engineering expertise
- Support in product selection
- Innovation leader in cast iron casting
- All of our products are proudly made in the USA, and meeting buy America requirements.
- Reliable performance in municipal, industrial, and airport environments
When you need a product provider with a history of proven performance, choose Neenah Foundry. Our team is here to help you get the job done.
FAQs: Trench Systems
What Are Trench Drains Used For?
Trench drains collect and channel surface water runoff into stormwater management systems. They protect pavement edges and manage water flow to keep traffic surfaces safe.
Why Is Cast Iron Preferred for Heavy-Duty Trench Applications?
Cast iron lasts longer and offers superior strength. It is also a low-maintenance material that resists corrosion.
What’s the Difference Between Traffic-Rated and Airport-Rated Trench Systems?
Traffic-rated solutions are designed to withstand the loads of passenger and commercial vehicles. Airport-rated trench systems are engineered to handle the much heavier loads imposed by aircraft and port lifting equipment.
Where Are Trench Systems Commonly Installed?
Trench systems are installed in roadways, parking structures, industrial sites, ports, airports, and commercial facilities. They are a valuable solution anywhere controlled surface drainage is required.
Do Trench Systems Require Maintenance?
Yes. You should periodically inspect your trench drainage components and clear away any debris that has become lodged in the grates.
How Long Do Cast Iron Trench Systems Last?
Neenah Foundry’s cast iron products are built to last for decades when properly installed. Their strength and ability to withstand weather and everyday wear ensure a long service life with minimal maintenance.
Can Trench Systems Be Customized for Specific Projects?
Yes. Neenah Foundry’s engineering team can help design and lay out the trench system to meet the specific needs of your project. Contact our experts to learn how we can customize solutions for your plan.
Explore Trench Frames From Neenah Foundry
Neenah Foundry offers a broad selection of trench grates and frames. Our products are built to last and made from high-quality cast iron. Contact Neenah Foundry to discuss the unique demands of your drainage project and place your order today.