TrinityHighway.com
6
Revision A November 2021
General CASS
®
Information
CASS
®
is a 3-Cable Barrier that can be used as a TL-3 system on 1V:6H or flatter slopes. CASS
®
consists of a 4” wide galvanized steel C-Channel post and three (3) pre-stretched 3/4” [19 mm]
wire rope cables. The posts can be driven, placed in a driven sleeve, placed in a sleeve and
concrete footing, placed in a sleeve in a mow strip, or base plated. One inch [25 mm] or 3/4” [19
mm] fitting hardware can be used.
The post spacing range is 6’-6” [2 m] minimum and 16’-4” [5 m] maximum. The 12” x 30” diameter
[300 mm x 762 mm] minimum depth concrete footing is used for the system with slopes 1V:6H or
flatter. See the Ground Preparation Section for additional placement criteria. The footing
depths/diameters can be increased if the soil characteristics do not meet NCHRP 350 standard
soil. Contact Trinity Highway for these designs.
CASS
®
can be placed on the roadside in front of slopes 1V:2H or flatter. Use a minimum distance
of 2’ [0.6 m] in front of the hinge point to the center of the post.
All cable height dimensions are approximate from top of grade to center of the cables. Cables
are placed in a slot at the top of the posts at approximate heights of 20.9” [530 mm], 25.2” [640
mm], and 29.5” [750 mm]. Plastic spacers keep the cables positioned at approximately 4” [100
mm] on center from each other. A stainless steel strap is placed around the post below the top
cable.
The post spacing will be in accordance to the contract plans. The barrier is terminated either with
a CCT, or a CCA.
Only use the CCA when not on the NHS or when it cannot be impacted in
either direction.
The Minimum Strength Concrete (“MSC”) for all concrete components of CASS
®
is 3,000
psi [21 MPa] or greater to meet the state/specifying agency’s specifications.
Inspect Shipment
Before assembling the CASS
®
, carefully unpack and inspect all components for signs of damage.
Check the received parts against the packing list supplied with the system to verify that all parts
were received. If parts are damaged or missing from the shipment or unspecified parts were
part of the shipment, do not attempt to assemble the system; contact Trinity Highway
immediately.
Warning: Use only Trinity Highway parts that are specified by Trinity
Highway for use with the
CASS
®
for assembling, maintaining, or
repairing the
CASS
®
. Do not utilize or otherwise commingle parts from
other systems even if those systems are other Trinity Highway Systems.
CASS® Components
Below is a pictorial of components for the
CASS
®
hardware. Please see
Trinity Highway
drawing
for specific lists of quantities. All Trinity Part Numbers (“PN”) are provided for standard
parts only.
Note:
The following components are not shown to scale.
