Polycast^® Transportation Drains

The POLYCAST® 900 Series Grated Line Drain

900 Series Grated Line Drain for Highway and Airport Drainage Systems collects runoff before it travels onto road or airplane taxi surfaces where water and ice can cause hazardous conditions. POLYCAST® Grated Line Drain exceeds AASHTO highway standards for vehicles operating at highway speeds. It is a safe, economical, and low maintenance solution for roadway (DOT) surface drainage systems.

The POLYCAST® Grated Line Drain features:

• Flow rates of up to 470 GPM per outlet
• Corrosion, chemical and UV resistant polymer concrete channels
• Integral embedment anchor flanges secure the non-removable grate to prevent pullout from high-speed highway traffic
• Removable grates with locking devices also available
• Coefficient of thermal expansion similar to concrete

The Grated Line Drain assembly consists of a one-piece, integral cast iron frame and grate on top of the conventional 600 Series polymer concrete channel. Each 16” frame has four integral concrete anchors for maximum pullout resistance. Exceeds the following ASTM specifications: C307, C579, C580, C140, C267, C666 and B117.

POLYCAST® 3000 is a high capacity presloped drain system designed for airports, roadways and other applications needing high volume flow rates. The unique bulb shaped design, combined with the continuous 1% slope, provides the largest flow capacity of any similar presloped trench drain on the market today. The flow rates for POLYCAST® 3000 are more than 3000 GPM (gallons per minute) or 6.73 cfs (cubic feet per second) for 120' of drain. Competitive drain systems often require extender panels for comparable flowrates.

The system channels are manufactured using the pultrusion process to produce a lightweight, high strength fiber reinforced polymer composite channel. The polymer material limits water absorption to less than 1% and provides excellent chemical resistance. The pultruded fiberglass construction provides extremely strong vertical sidewalls. This reduces sidewall deflection during the concrete pour and maintains maximum flow capacity. The sidewalls of many other drain systems tend to collapse during this critical process, resulting in substantially reduced flows.

The coefficient of thermal expansion for POLYCAST® 3000 (4.5 x 10-6 in/in/°F) is similar to that of concrete (6 x 10-6 in/in/°F) so it will not buckle or break apart from thermal expansion stresses. This ensures that the structural integrity of the channel side walls and the flow rates remain constant. These basic design considerations reduce the need for special parts inventory and expensive accessories.

• Flow 6.73 cfs, 3014 GPM
• 100% concrete encasement of grate frames
• Grate frames will not trap air
• Sturdy sidewalls resist deflection
• UV stable
• 56% glass content by weight in channels
• CTE 4.5 x 10-6 in/in/^oF
• 120' continuous slope at 1%
• Manufactured in ISO-9001 plant
• No formwork
• 100’ per hour installation rates possible
• Single lift concrete placement

Download the POLYCAST Catalog PDF. Click here to visit the Polycast Literature Library.