Airport Drainage

Drainage by Application · Transportation & Logistics

Airside pavement is the most demanding drainage environment most engineers will ever spec: extreme wheel loads, zero tolerance for loose hardware, fuel and deicing fluid in the runoff, and no room for ponding on an active apron. Trench systems here are chosen grate-first — and every grate has to lock down.

What airport drainage has to survive

Extreme, repeated wheel loads. Aircraft, fuel trucks, and ground support equipment concentrate enormous loads on small contact patches. Our load scale tops out at Class F precisely for runway, taxiway, and apron duty; airport freight and service areas commonly spec Class D and up.
FOD discipline. A grate that can rattle loose is foreign object debris waiting to happen. Airside grates need positive mechanical lockdown — bolted or boltless-locking, with tamper-resistant hardware where the public or contractors have access.
Contaminated runoff. Fuel spill zones and winter deicing pads generate runoff that must be intercepted and routed for treatment, not sheeted into the storm system. Trench runs are how aprons and pads capture it at the source; confirm containment and treatment requirements with your airport authority and environmental engineer.
Landside is a different spec. Terminal curbside, parking structures, and access roads carry buses and passenger vehicles — heavy, but a different class than airside. One project usually needs two or three distinct specs.

Start with load class

The Load Class Recommendation Guide maps the full A–F scale: Class C–D covers H-20 truck and forklift duty for landside and cargo areas, Class E covers port-and-rail-grade loading, and Class F is the maximum-load rating used for runways, taxiways, aprons, and military airfields. Spec each run to the heaviest vehicle that will ever cross it — on an airfield that is rarely the everyday vehicle.

Recommended systems

ACO PowerDrain S100K / S200K / S300KQuote-Only

ACO's heavy-duty polymer concrete trench line and the natural starting point for airside and cargo-area runs. Ductile iron grates secure with ACO's boltless PowerLok locking or a 4-bolt lockdown, with tamper-resistant bolts available — the positive grate retention FOD programs require. Sloped SK channel sections keep long apron runs moving; the S300K provides the largest capacity in the series for deicing pads and high-flow interceptor runs.

ACO KlassikDrain K100 / K200 / K300Quote-Only

For landside work — terminal curbside, parking, service roads, and pedestrian plazas — KlassikDrain offers 4-inch through 12-inch (K300) channels with a deep grate catalog: ductile iron for vehicle lanes, ADA-marked stainless and galvanized designs where passengers walk. Series 600 catch basins and debris strainers handle collection points.

Ductile Iron Replacement Grates

Aging trench runs often need grates before they need new channel. Our metal grates catalog includes ductile iron, cast iron, and steel replacements; send dimensions and the required load class and we will match a grate to the existing frame. Heavy municipal-style castings from EJ, U.S. Foundry, and ABT are also available on request through our quote desk.

Sizing and supporting resources

Aprons and pads are large, flat catchments — flow adds up fast. The runoff estimation guide covers the sizing math, and the runoff calculator turns area and rainfall into a flow number you can drop straight into a quote request. For terminal frontage and pedestrian areas, the ADA drainage guide covers grate opening and placement rules.

Airport work is submittal-driven. Send us the drawing sheet and spec section with your request — we will return product data, load ratings, and pricing in a package your engineer can approve.