TL 3 System 4400 lb Pickup Truck 1800 lb Small Car Impacting at 62 mph 25 degrees

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TL 3 System4400 lb Pickup Truck1800 lb Small
Car Impacting at 62 mph25 degrees
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(No Transcript)
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18 wheelers? NOT TESTED
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System Components

• Simple System
• Line Posts
• Cable
• Hook Bolts
• Turnbuckles
• End treatment

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Line Posts
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Turnbuckles

• Standard Cable 1 x 750 (229m)

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Turnbuckles

• When turnbuckle interferes with post, leave off
  bolt
• Best practice is NOT to install all three
  turnbuckles in same space

NOT like this!
Like This!
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End Treatment

• 3 CRP posts _at_ 6-3
• 6 End Terminal Posts _at_ 6-6
• Line posts (refer to plans)

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CRP Posts
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Delineation

• 3M 94 Primer
• 3M High Intensity Prismatic 3931 Reflective
  Sheeting

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Maintenance of System
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Common Impacts SIMPLE REPAIR
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CRP Posts
Line PostRepair
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Line Post Repair

• Make SURE
• Cable on correct side
• Hook bolt nuts hand tightened
• Cable Heights
• TOP 29.5 1
• MIDDLE 25.5 1
• BOTTOM 21.5 0/-2
• Check and record tension

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Uncommon Impacts
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Releasing Tension

• Loosen turnbuckle(s)
• Cable grip and winch pull towards accident
• Ratchet come-along and 2 cable grips
• Knock over CRPs
• LAST CASE CUT THE CABLE

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QuickDe-tensioning
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CRP Repair
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Re-tensioning STANDARD CABLE

• Check Temperature Chart
• 15 higher
• 0 to 1.5 years
• After first major freeze
• After impact
• Tension tolerance is 15-20 or up to 2500 lbs.
• Check within first month after installation
• Periodically over the first year

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CheckingTension
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U.S. High-Tension Cable System
Additional information, photos, videos, and
manuals available at nucorhighway.com
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U.S. High-Tension Cable System
Questions ?