Airport Castings: Trench

Neenah Foundry offers a variety of cast iron trenches for use in airport settings. Select from the list below to find the trench that fits your needs.

R-4990 Airport, Port & Heavy Industrial Series+

R-4990 Airport, Port & Heavy Industrial Series

Bolted Trench for Extra Heavy Duty Applications

These trench drains are capable of supporting the heavy wheel loads of today's commercial environments. For larger trench widths or greater loading requirements, please contact our Product Engineering Department.

R-4990

Catalog No. A B C Grate/Cover Material
* Type D solid cover available.
** Type C grate available.
R-4990-AA 8 2 6 Gray Iron Class 35
R-4990-BA 10 2 8 Gray Iron Class 35
R-4990-CA 12 2 10 Ductile Iron
R-4990-DA * ** 14 2 12 Ductile Iron
R-4990-EA * 17 2 15 Ductile Iron
R-4990-FA * 20 2 18 Ductile Iron
R-4990-HA 26 2 24 Ductile Iron
R-4990-KA2 34 2 31 Ductile Iron
R-4990-OA 51 2 48 Ductile Iron
  • Ductile iron furnished in Grade 80-55-06.

R-4993 and R-4994 Superior Durability Frame Series+

R-4993 and R-4994 Superior Durability Frame Series

for Airports, Ports, Industrial Sites and Roads

Superior Duty Frames

Designers have the option to utilize either of these new frames in locations where it is deemed that traditional angle frames could break loose from concrete due to extraordinary conditions.

A few examples of such conditions are:

  • Braking forces of ultra-heavy vehicles
  • Torsional forces due to turning aircraft and container port vehicles
  • Heavy airfield and industrial applications
  • Highway tunnels
  • Certain highway applications

Neenah offers two frame choices, each with its own unique benefits. For complete installation information click here.

These products come standard with the grate bolted to the frame.

R-4993

  • 254 square inches of masonry contact surface per foot.
  • 150 square inches of masonry bearing surface per foot.
  • Frame top section provides transition platform onto and off grating surface.
  • Provision for bolting successive frame sections together.
  • Provides significant reinforcing bar opportunity.
  • Bolt holes are drilled clear through cantilever seat and will not trap debris.
  • 350 square inches of masonry contact surface per foot.
  • 65 square inches of masonry bearing surface per foot.
  • Unique frame shape allows the clear opening to be wider than typical.
  • Bolt holes are drilled clear through cantilever seat and will not trap debris.
  • Provision for bolting successive frame sections together.
  • Provides significant reinforcing bar opportunity.
  • Frame is integrated within the concrete slab.
  • Available with LiftMate ball and socket connector. See R-4999-HALM.
Type T Type S     Type T Type S      
Catalog No. Catalog No. A B C E C E Type A Type C Type D
x - Indicates availability
Airport, Port, Industrial Loads
R-4993-AAB R-4994-AAB 8 2 6 19-1/4 4 18 x    
R-4993-BAB R-4994-BAB 10 2 8 21-1/4 6 20 x    
R-4993-CAB R-4994-CAB 12 2 10 23-1/4 8 22 x    
R-4993-DAB R-4994-DAB 14 2 12 25-1/4 10 24 x x x
R-4993-EAB R-4994-EAB 17 2 15 28-1/4 13 27 x   x
R-4993-FAB R-4994-FAB 20 2 18 31-1/4 16 30 x   x
R-4993-HAB R-4994-HAB 26 2 24 37-1/4 22 36 x   x
R-4993-KAB R-4994-KAB 34 2 32 45-1/4 30 44 x   x
R-4993-OAB R-4994-OAB 51 2 49 62-1/4 47 61 x   x
  • Ductile iron furnished in Grade 80-55-06.

R-4994 LiftMate Series+

R-4994 LiftMate Series

Superior Durability Frames for Airports, Ports, Industrial Sites and Roads

Neenah's new LiftMate system is now being applied to our R-4994 Type S Frame trench series. These trench drains are capable of supporting the heavy wheel loads of today's commercial environments.

R-4994

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