High Tension Cable Barrier Systems

High tension cable barrier systems are used for all kinds of construction projects. They are most commonly used as safety barriers in places like parking garages or on the roadside. No matter the application, these cable systems are imperative to the safety of both passenger and vehicle. High tension cable barrier systems are an excellent solution to provide proper safety at a lower cost than other barrier types. 

Continue reading to find out more about high tension cable barrier systems.

Low Tension Cables Versus High Tension Cables

Low Tension Cable Barrier Systems

While they look similar, low tension cables function differently than high tension cables. The cables in a low tension barrier system are stretched just enough so that they are straight without being rigid. Each low tension cable is attached to a spring, which maintains the tension.

If a vehicle were to collide with this kind of barrier system, the cable may provide as much as 12 feet of elasticity. Because these systems lack high tension, each length of barrier is limited to 2,000 feet with an anchor system at the end of each run.

High Tension Cable Barrier Systems

Due to the safety implications of low tension cables, high tension cable barrier systems are increasingly preferred. The cables in a high tension barrier system are tightened after being installed onto posts. Tension level is dependent on the temperature and ranges between 2,000 and 9,000 lbs. 

Because these systems are more rigid, they are not limited to a specific length. When impacted, the cable may deflect as little as eight feet. Because the cables are so tight, damage to one section of the barrier system does not diminish the integrity of the remaining barrier length.

Uses for Systems of High Tension Cable Barriers

While roadside or parking garage safety are among the most common uses for high tension cable barriers, there are many other ways in which these may be used:

• Bridge railings
• Vehicle routing
• Pedestrian traffic control
• Security fencing

High tension cable barrier systems are perfect for many kinds of vehicular safety applications. Not only are they less expensive than other barrier systems, but they also easily spring back if impacted. 

High Tension Cable Barrier Materials

High tension cable barrier systems are typically fabricated from one of two different materials:

1. Plastic coated
2. Galvanized metal

All cable barrier systems have a base of galvanized metal. They are often made of steel and coated with a zinc aluminum alloy. High tension barrier cables can also be coated in plastic or epoxy, however these serve a more aesthetic rather than functional purpose. 

The hardware for high tension cable barriers is also usually galvanized metal. Some barriers are manufactured with a reflective coating or plastic to ensure that drivers can see the barrier. The quality of the high tension cable barrier system is dependent on the manufacturer, which is why it is so important to hire a quality contractor.

High Tension Cable Barrier Construction Standards

Each state’s Department of Transportation (DOT) has a specific set of construction standards for high tension cable barrier systems. Here are some of the Georgia Department of Transportation (GDOT) construction standards for high tension cable barrier systems:

• Must be four strand, pre-stressed high-tension cables
• All materials must be galvanized 
• Grade approach from travel lane to cable barrier must be 4:1
• Posts must be between 10 and 15 feet apart
• System must have a maximum cable deflection of nine feet
• Reflectors must be installed no more than 100 feet apart
• Operators must maintain a tension log of cables

All manufacturers of high tension cable barrier systems should thoroughly understand and comply with construction standards set by their state’s Department of Transportation.

High Tension Cable Limitations

Any limitation for the construction of high tension cable barrier systems is laid out by the state’s Department of Transportation. As stated above, each state has its own set of limitations. Here is the Georgia Department of Transportation’s Standard Specifications Construction of Transportation Systems. These include:

• Space between posts
• Materials
• Reflector requirements
• Deflection amount
• Length of cable system
• Installation techniques
• Personnel requirements

The Department of Transportation in your state will have more information on high tension cable system limitations.

Cutting-Edge Barrier Cable Services

When it comes to a system that is so crucial for safety, hiring the best construction company is important. For high quality, cutting-edge barrier cable services, Tendon Systems is a top choice. 

At Tendon Systems, clients work with industry experts who provide a full scope of services for every construction project. Tendon Systems provides a range of barrier cable services which include fabrication, design, installation, engineer support and technical support.

At Tendon Systems we also provide many additional services:

• Post-tensioning systems
• Restoration 
• Scanning and Coring
• Engineering Services
• Slab on Grade

For a leading contractor in barrier cable system services, choose Tendon Systems. We are ready to help bring your construction plans to fruition. Contact us to learn more, or Get A Quote if you're ready to get started.