Trench Castings: Airports, Ports, Industrial

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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:

• Breaking 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 it's own unique benefits.

• 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.
• Frame is integrated within the concrete slab.
• Available with LiftMate ball and socket connector. See R-4999-HALM.

Note: Typical "L" Shaped angle frame has about 120 inches of masonry contact surface per foot and about 54 inches of masonry bearing surface per foot.

Type T	Type S			Type T		Type S		Type	Type	Type	Type	Type	Type	Type
Catalog No.	Catalog No.	A	B	C	E	C	E	A	C	D	E	L	P	Q
Heavy Duty
R-4993-AB	R-4994-AB	8	1-1/2	6	19-1/4	4	18	x	x	x	x		x
R-4993-BB	R-4994-BB	10	1-1/2	8	21-1/4	6	20	x	x	x	x		x
R-4993-CB	R-4994-CB	12	1-1/2	10	23-1/4	8	22	x	x	x	x		x
R-4993-DB	R-4994-DB	14	1-1/2	12	25-1/4	10	24	x	x	x	x	x	x	x
R-4993-EB	R-4994-EB	17	1-1/2	15	28-1/4	13	27	x	x	x	x		x
R-4993-FB	R-4994-FB	20	1-1/2	18	31-1/4	16	30	x	x	x	x		x
R-4993-GB	R-4994-GB	23	1-1/2	21	34-1/4	19	33	x	x	x
R-4993-HB	R-4994-HB	26	1-1/2	24	37-1/4	22	36	x	x	x	x			x
R-4993-JB	R-4994-JB	30	2	28	41-1/4	26	40	x	x	x
R-4993-KB	R-4994-KB	33	2	31	44-1/4	29	43	x	x	x	x
R-4993-LB	R-4994-LB	36	2	34	47-1/4	32	46	x	x	x
R-4993-MB	R-4994-MB	39	2	37	50-1/4	35	49	x	x	x
R-4993-NB	R-4994-NB	45	2	43	56-1/4	41	55	x	x	x
R-4993-OB	R-4994-OB	51	2	49	62-1/4	47	61	x		x
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
x – indicates availability