TrinityHighway.com
31
Revision F November 2021
To reduce the amount of the cable damage during cutting and limit fraying, tape must be wrapped
around the cable and the cut made through the tape.
Some agencies have also cut through
the turnbuckle itself.
This may help to reduce the maintenance/repair effort. When cutting
through a turnbuckle, ensure that all posts, both upstream and downstream for a distance of 50’-
0” [15 m], are removed in order to prevent turnbuckle or fitting interference.
If time permits, the tension can be released by pushing over one or more of the CRP(s) with a
piece of equipment.
Removing Entangled Cable from a Vehicle
When the cable is entangled with a vehicle that must be towed away, remove the entangled cable
by lifting one or more of the cables up over the vehicle. During this operation, if any of the line
posts entangled with the cable start to lift up out of the sleeves, the lifting must be stopped and
the posts removed from the cable. Once the posts are removed, the cable can be lifted up over
the vehicle.
In addition, if the entangled vehicle is located near the CCT end, it is possible to reduce tension
by loosening the two large nuts on the terminal cable end. The nuts can be backed off to the end
of the fitting.
DO NOT COMPLETELY REMOVE EITHER OF THE NUTS!
Repairing a Cut or Damaged Cable
Following are various methods to repair cables that have been cut or damaged:
Method 1 – Splicing the Cable
Splicing the cable may be necessary if a cable is cut or damaged during an impact. The length
of the cable must be 50’-0” [15 m] or longer to make the splice.
1. Re-cut the ends of the cable to ensure the ends are clean and smooth.
2. Refer to the
“Cable Splices
” Section when making a cable splice connection.
3. If an accurate length of cable is used for the splice section, two cable splice
connectors will be required to connect the cables together.
4. Connect one end of the splice cable to one end of the cut cable with a connector.
5. Apply another connector to the other end of the splice cable and the end of the
cut cable.
6. Assemble the cable splice connector using a backhoe or other mechanical means.
7. Check the tension on the cable with the tension meter and adjust the turnbuckles
to bring the cable to the correct tension based on the infrared thermometer cable
temperature reading and the values on the CASS
®
S3 Temperature/Tension
Chart.
Note:
If the cable splice has been cut accurately, the tension may be obtained by turning the
turnbuckles at each side of the cut.
If the tension cannot be obtained at the turnbuckles at each side of the splice, it may be necessary
to follow the procedures in the
“Tension and Tension Meter
” Section. Some assemblies may
have field splices at all locations. If this is the case, the measuring, cutting, and re-connecting can
be done at any location.
Method 2 – 5’-0” [1.5 m] Section
A second method to reconnect the cables is to use a 5’-0” [1.5 m] Cable Field Repair Section
(PN-5840G) of cable with a factory applied fitting on each end. This method will also require two
turnbuckles and a left-hand and right-hand threaded fitting to complete the connection.
1. Remove approximately 9’-8” [2.9 m] of cable from the cut cable.
Содержание 620005
Страница 1: ......
Страница 39: ...TrinityHighway com 38 Revision F November 2021 Appendix B Cable Barrier Overlap...
Страница 42: ......