Trinity Highway CASS TL3, Руководство по сборке изделия

Страница: 29 / 42

TrinityHighway.com 28 Revision A November 2021
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.
Note: Due to fractional forces, it is recommended to
start tensioning sequence from
the bottom cable, working upwards to the top cable.
Warning:
Extreme care should be taken to ensure that the CASS
®
cable
pulling tool is attached to the cable in such a location that if it slips, the chain or
CASS® cable 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 ensure the tool is clean, dry and not worn.
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 splice interference post (PN-33912G/post in sleeve
or PN-33911G/driven post).
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 should 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.
Delineation
The state/specifying agency will establish the criteria for delineation of the line posts. The
delineation is typically provided on the spacer used to separate the cables.
It is suggested for the terminal CRP that reflective sheeting (PN- 5851 or PN-5851) be affixed to
delineate them, which could help to reduce some impacts. Trinity Highway makes no guarantees
they meet the minimum specifications, comply with MUTCD requirements or comply with
state/specifying agency requirements. It is recommended that all of the CRPs be delineated.