TrinityHighway.com
28
Created November 2021
Warning:
Infrared light is harmful if shined into the eyes.
Warning:
Read and understand the directions provided for the CASS
®
Cable
pulling tool.
Warning:
Extreme care should be taken to ensure that the C A S S
®
cable
pulling tool is attached to the cable in such a location that if it slips, the chain or
pulling tool will not hit anyone. It is suggested that the pulling equipment be placed
between the workers and the CASS
®
cable pulling tool. Read the directions and
make sure the tool is clean, dry and not worn.
Complete the following steps to tension the cables:
1. Check the cable run to see if any of the turnbuckles or torpedo cable splice will pass
from one side of the post to the other during the tensioning process. If they will, pull
the post for the tensioning process. Also check the fitting marks at each turnbuckle
to make sure no marks are showing.
2. The tensioning of the cable will be taken at a location no closer than 500’ [167 m]
from the end that has not been connected to the CCT or Anchor Cables.
3. For cable runs greater than 5,000’ [1,525 m], it is recommended that the cable be
pulled every 3,000’ [915 m] to remove the slack from the cable.
4. With the required tension on the cable, place a mark on the cable where it meets the
threaded end of the CCT.
5. Release the tension on the cable. Go back approximately 28” [0.71 m] from the mark and
cut the cable.
6. Place a right-hand field applied fitting using the procedures in the Field Applied Fittings
with a Turnbuckle section.
7. On the CCT end, place a turnbuckle (PN-5826G) on the fitting by only a couple of threads.
Pull the cable until the cables are connected to the turnbuckle. With both fittings inserted
in the turnbuckle, the turnbuckle will be turned until the 1-1/2” [38 mm] marks on the cables
ends of both threaded rods are in the turnbuckle and threaded rods can be seen in the
site hole.
8. With the cables connected, release the CASS
®
cable pulling tool from the cable. Check
the tension on the cable. If a higher tension is needed, rotate the turnbuckle while the
cables are restrained to prevent twisting.
9. Replace any posts removed during the tensioning process. If a turnbuckle or torpedo cable
splice falls where there is a post, or if the turnbuckle or torpedo cable splice is 1’ [300 mm]
from the post, replace the post with a straight cut notch post (PN-33912G).
10. Two (2) or three (3) days after tensioning, check and record the tension values, at the
same locations as taken in step 2. If adjustment is needed to meet the tension on the
tension chart, the turnbuckles can be adjusted. After adjustment, ensure the threaded rod
is no more than 4” [100 mm] into the turnbuckle. It is suggested that the tension recorded
be set approximately 800 lbf. [3.6 kN] above the value on the tension chart.
11.
It is recommended that approximately two (2) to three (3) weeks after the cable
tensioning in Step 10, the cable tension is checked again against the tension chart.
Make any adjustments necessary to meet the appropriate tension
.
