Practices for High-Tension Cable Barriers (2016) / Chapter Skim
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Pages 39-56
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40 Brifen Wire Rope Safety Fence (WRSF) Brifen was the first high-tension cable barrier system used in the U.S., installed in Oklahoma City in 2000.
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41 System Components • Cable The Brifen WRSF is made up of 21-wire, 3/4 in.
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42 BRIFEN Tension Cable Barrier System Specification (04/23/04)
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46 Gibraltar High-Tension Cable As shown from the survey, currently 35 states use this system, comprising 83.3 percent of all the states that use high-tension cable barrier (42)
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47 When solid rock is encountered: For a socketed post -- continue digging hole, 15-in. deep into the rock or to the required depth shown on plans, whichever comes first.
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48 the contractor, sub-contractor, and DOT personnel involved in the work. A supervisor, certified by the manufacturer, shall be on site during all phases of installation of the high-tension cable barrier.
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49 • End Anchor Terminal The system uses non-releasable anchors, so the cables are likely to remain under tension after an impact. It is a NCHRP Report 350 TL-3 compliant design as a gating end terminal.
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50 ASTM A741, AASHTO M30, Type 1, and Class A coating and tensioned per Safence tensioning chart. Post: C-post is of cold rolled design fabricated from ASTM A50 steel and galvanized per ASTM A123.
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51 hook bolts and the top two cables are supported by a top clip attached at the top of the U-post section. System Components • Cable The cable is made up of 21 stands (3 × 7 configuration)
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53 Trinity Highway Cable Safety System (CASS™) Based on the survey, currently 38 of the 42 states (90.5 percent)
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54 Another design of the CASS™ system is shown below where the top two cables are positioned in the wave-shaped slot and the bottom two cables are supported by hook bolts on a S3 5.7 lb I-post. System Components • Cable The CASS™ uses a 19 mm (¾ in.)
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55 TL-3 – Four Cable on 1V:4H* TL-4 – Four Cable on 1V:6H FHWA Eligibility Letter – B-141F (October 1, 2010)
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Abbreviations and acronyms used without definitions in TRB publications: A4A Airlines for America AAAE American Association of Airport Executives AASHO American Association of State Highway Officials AASHTO American Association of State Highway and Transportation Officials ACI–NA Airports Council International–North America ACRP Airport Cooperative Research Program ADA Americans with Disabilities Act APTA American Public Transportation Association ASCE American Society of Civil Engineers ASME American Society of Mechanical Engineers ASTM American Society for Testing and Materials ATA American Trucking Associations CTAA Community Transportation Association of America CTBSSP Commercial Truck and Bus Safety Synthesis Program DHS Department of Homeland Security DOE Department of Energy EPA Environmental Protection Agency FAA Federal Aviation Administration FAST Fixing America's Surface Transportation Act (2015) FHWA Federal Highway Administration FMCSA Federal Motor Carrier Safety Administration FRA Federal Railroad Administration FTA Federal Transit Administration HMCRP Hazardous Materials Cooperative Research Program IEEE Institute of Electrical and Electronics Engineers ISTEA Intermodal Surface Transportation Efficiency Act of 1991 ITE Institute of Transportation Engineers MAP-21 Moving Ahead for Progress in the 21st Century Act (2012)
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TRANSPORTATION RESEARCH BOARD 5 0 0 F ifth S tre e t, N W W a s h in g to n , D C 2 0 0 0 1 A D D R ESS SER VICE R EQ UESTED NO N-PRO FIT O RG .
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