Trinity 620005, Assembly Manual

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TrinityHighway.com 29 Revision F November 2021
8. With the cables connected, release the 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-34049G/post in sleeve
or PN-34061G/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 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 checking
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 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; but, can be placed in other
locations.
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.
Repairs
After an impact, the system will require repair. Full scale crash testing conducted in conformance
with NCHRP Report 350 or MASH indicates that the cable will typically remain close to its original
height depending on the number of posts damaged. It is recommended that the system be
repaired as soon as possible by the appropriate state or specifying agency.
After most impacts, the system can be repaired in a relatively short period of time. Any part or
parts which visually appears broken, frayed, torn, and/or damaged must be replaced. Additional
specific parts of the CASS
®
S3 system, which must be replaced in order to bring the system back
into full service, is a decision that must be made by the appropriate state or specifying agency.
An impact that encounters a CCT may require re-tensioning of the entire run of cable. After
repairing the cable, the tension throughout the system should be checked.
It is recommended that for impacts outside of the testing parameters that the cable be checked
to determine if re-tensioning is required.
Important:
Trinity Highway makes no recommendation whether use or reuse
of any part of the system is appropriate or acceptable following an impact. It is
the sole responsibility of the state/specifying agency and its engineers or its
agent to make that determination. It is critical that you inspect this product
after assembly is complete to make certain that the instructions provided in
this manual have been strictly followed.
Repair for CASS
®
S3 Impact (CRP Not Impacted)
If an impact occurs and a CCT CRP is not involved, usually only the line or terminal posts will
have to be replaced and the cables re-inserted in the posts or attached to the post. Follow the
steps below in making this repair: