Barrier cable

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Barrier cable is a vehicular or pedestrian restraint system used in parking garages. It installed along the ramps or around the perimeter of the parking structure. It consists of a 0.5-inch, 7-wire steel strand which is similar to the strand used in Post-tensioned concrete.

Types[edit]

There are three types of barrier cables systems:[1]

Galvanized[edit]

Galvanized barrier cable is the most prevalent type of barrier cable used today. The steel strand is Zinc plated to protect it from corrosion per ASTM A475.[2]

Epoxy-Coated[edit]

Epoxy-coated barrier cable is used on occasion for aesthetic purposes. It is significantly more expensive than galvanized barrier cable.

Plastic-Coated[edit]

Plastic-Coated is similar to the steel tendon used in Unbonded post-tensioned concrete. The only difference is that plastic-coated barrier cable does not have a layer of Post Tension coating ("grease") between the extruded HDPE plastic sheathing and the steel strand.

Anchorage[edit]

Depending on parking structure, the barrier cable is installed in rows of several cables.[3] There are several anchorage and attachment systems to concrete or steel columns.

Specification[edit]

The design and installation of the barrier cable system is referenced in the Post-Tensioning Institute's Specification for Seven-Wire Steel Strand Barrier Cable Applications.[4]

Benefits[edit]

7-wire Barrier Cable has a high strength-to-weight ratio of the strands and the cables cost less to place than precast panels, traditional cast-in-place or concrete masonry barriers.[5]

References[edit]

  1. ^ http://www.amsyscoinc.com/2010/03/23/barrier-cable/
  2. ^ "Archived copy". Archived from the original on 2008-12-03. Retrieved 2010-01-11. 
  3. ^ "Archived copy". Archived from the original on 2008-12-03. Retrieved 2010-01-11. 
  4. ^ "Archived copy". Archived from the original on 2011-07-27. Retrieved 2010-01-11. 
  5. ^ http://www.vsl.net/SYSTEMSPRODUCTS/BARRIERCABLE/tabid/92/Default.aspx

External links[edit]

  • The Post-Tensioning Institute - An international technical institute dedicated to post-tensioned concrete representing a community of professionals and businesses