TrinityHighway.com
30
Revision F November 2021
1. Inspect the damaged system and determine what components will be required to correct
and repair CASS
®
S3 to originally specified working condition.
2. Remove the damaged posts. During very cold weather and in Northern climates, the post
may become frozen into the socket. Successful means of extraction have utilized propane
torches or a hammer drill to break-up the ice. With approval from the State specifying
agency, calcium chloride (a common deicing chemical) can also be mounded over the top
of the ice for 24 hours prior to removal of the post. As always, wear appropriate safety
equipment such as work gloves and eye protection during post removal. If the posts are
driven, they will have to be pulled out of the ground.
3. Replace any damaged posts.
4. Replace the cables. For the line cables, see the “
Laying Out the Cable/Attaching the
Cables to the Post”
section. For the CCT cables, see the
“Terminal Cables”
section.
Depending on the severity of the impact, after the repair, the cable may need to be re-tensioned,
Trinity Highway recommends the tension of the cable be checked with the CASS
®
tension meter.
If the tension is not in accordance with the CASS
®
S3 System Temperature/Tension chart, adjust
turnbuckles to bring the cable to the correct tension. See the
“Tensioning and Tension
Meter”
section to make any tension adjustments.
Note:
The reflective sheeting may be placed on the spacer for CASS
®
S3 based on the agency’s
specification.
Repair for System Impact (CRP Involved)
When the system has been impacted and CRP is involved, follow the steps below:
1. Inspect the damaged system and determine what material will be required to make the
repairs.
2. For the CRPs that have been impacted, inspect the top and bottom post for damage.
Repair and replace any damaged posts. See the
“CASS
®
S3 Terminal Post Assembly”
section. For any other posts that have been damaged, follow the criteria in the
“Repair
for CASS
®
S3 Impact (CRP Not Impacted)”
section.
3. Attach any detached cables and re-tension the cable.
Emergency Repairs
There is a possibility that an accident could cause significant traffic congestion, or the cable can
be entangled with the vehicle. When a vehicle is entangled in the cable, the first step that must
be undertaken is to move or drive the vehicle as close to the centerline of the cable system as a
feasible, in order to reduce tension. The following suggestions may help to get traffic moving and
the cable untangled:
Road Blocked Due to an Accident
To resume traffic flow after an accident or to get emergency vehicles access to the accident site,
crossover access through the cable may be necessary. To provide this access, remove cables
from several posts upstream and downstream of the desired opening. The opening width can be
adjusted by removing posts from the ground sleeves. The cable can be held down and the traffic
or emergency vehicles can pass over it.
PPE equipment such as protective gloves, safety goggles, and mask must always be used.
Keep
personnel out of the area upstream and/or downstream from the point of the cut.
In life threatening or emergency situations the cable can be cut.
If the cable was put under additional tension due to the accident, the tension can be reduced at
the turnbuckles closest to the impact. The turnbuckle can be backed off; however,
it is critical
that the fittings remain engaged within the turnbuckle a minimum of 3/4” [19mm] when the
cable is under tension.
Summary of Contents for 620005
Page 1: ......
Page 39: ...TrinityHighway com 38 Revision F November 2021 Appendix B Cable Barrier Overlap...
Page 42: ......
