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Traffic Barriers

Traffic Barriers also called Armco Crash Barrier or Crash Barriers keep vehicles within their roadway and prevent vehicles from colliding with dangerous obstacles such as boulders, buildings, walls, or large storm drains.
Are also installed at the road side to prevent vehicles from traversing steep (non-recoverable) slopes or entering deep water. Traffic Barriers are installed within medians of divided highways to prevent errant vehicles from entering the opposing carriageway of traffic and help to reduce head-on collisions.

Some of these Armco barriers are designed to be struck from either side , are called median crash barriers , Armco crash barriers can also be used to protect vulnerable areas like school yards, pedestrian zones or fuel tanks from errant vehicles.

Armco Crash Barriers

While crash barriers are normally designed to minimize injury to vehicle occupants, injuries do occur in collisions with traffic barriers . They should only be installed where a collision with the barrier is likely to be less severe than a collision with the hazard behind the barrier.

Make sure they are safe and effective. Armco crash barriers undergo simulated and full scale crash testing before they are approved for general use. While crash testing cannot replicate every potential manner of any impact, testing programs are designed to determine the performance limits. Traffic barriers are categorized in two ways : by the function they serve, and by how much they deflect when a vehicle crashes into them.

Barrier Functions

Armco Crash Roadside Barriers are used to protect traffic from roadside obstacles or hazards, such as slopes steep enough rollover crashes, fixed objects like bridge piers, and bodies of water. Armco Barriers can also be used with medians, to prevent vehicles from colliding with any hazards within the median.

Car Parks

We can install Armco Crash Barriers for all types of car parks to help prevent accidents and keep customers and cars safe.

Multi-storey Car Parks: Armco Barriers

Armco crash barriers are used in multi-storey car parks to prevent accidents to pedestrians and vehicles these can consist of a number of levels where Armco crash barriers would be used.

Bridge Barriers

These are designed to restrain vehicles from crashing off the side of a bridge and falling onto the roadway, river, or railway below. It is usually higher than roadside crash barrier, to prevent trucks, buses, cyclists or pedestrians from vaulting or rolling over the barrier and falling over the side of the structure. Bridge rails are usually multi-rail tubular steel barriers or reinforced concrete parapets and barriers.

Flexible Barriers

Flexible Barriers include cable barriers and weak post corrugated guide rail systems . These are referred to as flexible barriers because they will deflect 1.6 to 2.6 m (5.2 to 8.5 ft) when struck by a typical passenger car or light truck. Impact energy is dissipated through tension in the rail elements, deformation of the rail elements, posts ,soil, vehicle bodywork and friction between the rail and vehicle.

Semi-rigid and Rigid Barriers

These include box beam guide rail , heavy post blocked out corrugated guide rail and thrie-beam guide rail . Thrie-beam is similar to corrugated rail , but it has three ridges instead of two. They deflect 3 to 6 feet (0.91 to 1.83m): more than rigid barriers , but less than flexible barriers . Impact energy is dissipated through deformation of the rail elements, posts, soil, vehicle bodywork and friction between the rail and vehicle. Box beam systems also spread the impact force over a number of posts due to the stiffness of the steel tube.

Rigid Barriers are usually constructed or reinforced concrete. A permanent concrete barrier will only deflect a negligible amount when struck by a vehicle. Instead, the shape of a concrete barrier is designed to redirect a vehicle into a path parallel to the barrier. This means they can be used to protect traffic from hazards very close behind the barrier. and generally require very little maintenance. Impact energy is dissipated through redirection and deformation of the vehicle itself. Jersey barriers and F-shape barriers also lift the vehicle as the tires ride up on the angled lower section. For low speed or low-angled impacts on these BARRIERS, that may be sufficient to redirect the vehicle without damaging the body work. The disadvantage is there is a higher likelihood of a rollover with a small car than the single slope or step barriers. Impact forces are resisted by a combination of the rigidity and mass of the barrier. Deflection is usually negligible.

Security Fencing

A Perimeter Fence is a structure that circles the Perimeter of an area to prevent access. These fences are frequently made out of single vertical metal bars connected at the top and bottom with a horizontal bar. They often have spikes on the top to prevent climbing over, Residential Perimeter Fences are normally made of wood about six inches thick, or a solid wall.
Some fences may be string-like pieces of metal stretching across horizontally and vertically, creating a mesh of metal. Various Colors Available Powder Coated To Order.

Bollards

A Bollard is a short vertical post. Originally it meant a post used on a ship or a quay principally for mooring. The word also describes a variety of structures to control or direct road traffic. Posts arranged in a line to obstruct the passage of motor vehicles. The term can also be used to describe short, post-like light fixtures. The Traffic Bollard shell displays the MUTCD (Manual of Uniform Traffic Control Devices)"keep Right" symbol instead of a yellow shield, unlike many existing Traffic Bollards in the UK. Most new modern Traffic Bollards installed along roadways today are made of materials that make them completely collapsible. When struck by a vehicle at low or high speed.
The Traffic Bollard shell reverts to its original position with minimal or no damage to the unit

Removable Bollards

Bollards may be hinged at ground level, allowing them to be folded flat to permit vehicles to drive over them. In such cases they are generally fitted with padlocks at the base, to prevent them being lowered without proper authorization. Removable Bollards may be fitted into a permanent metal ground socket , from which they may be removed entirely to allow traffic to pass, or when not required. A Polypropylene Ground Socket is also available that protects the paving and foundations from damage when the Bollard is struck. This design uses a self-locking taper to enable bollards to be easily removed and relocated.

Retractable or "rising" Bollards can be lowered entirely below the road surface (generally using an electric or hydraulic mechanism) to enable traffic to pass, or block traffic. Rising Bollards are used to secure sensitive areas from attack, or to enforce traffic roles that are time related, or to restrict to particular classes of traffic.

Manually Retractable Bollards (lowered by a key mechanism) are found useful in some cases since they do not require retrofitting into existing landscapes or any electrical hook-ups or hydraulic systems.

The term "Robotic Bollards" has been applied to Traffic Barricades capable of moving themselves into position on a roadway Self-righting or Self-recovering Bollards . Can take a nudge from a vehicle and return to the upright position without causing damage to the bollard or vehicle. They are popular in car parks buildings and other areas of high vehicle usage.

Protective Bollards

Bollards are used throughout heavy industry and in commercial buildings management to protect assets. They usually consist of a simple steel post either anchored to concrete, cored into a hard surface, buried in the ground or secured on a Self-Locking Taper or Impact Recovery System protecting the surrounding foundations from damage when a bollard is impacted.

These Bollards protect utilities, electronics, machinery, buildings, or pedestrians from accidental collisions by vehicles, including passenger vehicles, transport trucking, and fork lifts. As collisions can cause damage to vehicles, operators, or the bollards them selves, new Bollards have been developed that absorb some of the impact energy, lessening the violence of the collision. Some are made of forgiving plastics while others are made of steel but fitted with an elastomer to absorb the impact energy.

Bollards are widely used to contribute to safety and security. The American Bar Association (ABC) state that bollards are used to contribute to homeland security. The (NIBS's) site -the Whole buildings design Guide (WBDG)- recommends in its Design Guidance that open spaces surrounding and contiguous to buildings be included as integral parts of a security design.

There are two main kinds of Security Bollards:

Crash and attack-resistant bollards , a hardened barrier systems used to protect military, government and other buildings or compounds of higher security levels. They are often used by retailers to prevent "smash and grab" burglaries. Large concrete planters are a decorative alternative to traditional bollards . According to the National Institute of Building Sciences, non crash-resistant bollards are "perceived impediments to access" and address the actions of two groups.

Rising Bollards are increasingly common around the world to hinder vehicle-based terrorist actions from achieving close proximity to buildings, and are also used to prevent ram-raiding such as the 2007 Glasgow International Airport Attack. They are also useful in mixed-use public spaces, which support both pedestrian use and emergency or service vehicle use.

Traffic Bollards

According to the traffic Calming Organization, bollards can be used either to control traffic intake size by limiting movements. or to control traffic speed by narrowing the available space.

Transport Research institute found that putting bollards at highway exits to control traffic also reduced accidents. Permanent bollards intended for traffic use-control purposes may be mounted near enough to each other that they block ordinary cars, for instance, but spaced widely enough to permit special-purpose vehicles and bicycles to pass through. Bollards may also be used to enclose car-free zones. Bollards and other street furniture are used to control overspill parking onto sidewalks and verges.

Approx size (1.15 meter / 4 foot) slim (10cm / 4 inch) fluorescent red or orange plastic bollards with reflective tape and removable heavy rubber bases are frequently used in road traffic control where traffic cones would be inappropriate due to their width and ease of movement.

Also referred to as "delineators" the bases are usually made from recycled plastic, and can be easily glued to the road surface to resist movement following minor impacts from passing traffic. These are some times called "T- TOP BOLLARDS" from the T-bar molded into the top for tying tape. The BOLLARD is economical and cost effective, and safe delineation system designed especially for motorways and busy arterial roads.

In conjunction with plastic tape it is also effective in pedestrian control.

Concrete

Concrete is composite material composed mainly of water, aggregate and cement. Usually there are additives and reinforcements included to achieve the desired physical properties of the finished material. When these ingredients are mixed together, they form a fluid mass that is easily molded into shape. Over time, the cement forms a hard matrix which binds the rest of the ingredients together into a durable stone-like surface with many uses.

Famous concrete structures include the Hoover Dam, the Panama Canal and the Roman Pantheon. The earliest large-scale users of concrete technology were the ancient Romans, and concrete was widely used in the Roman Empire. The Coliseum in Rome was built largely of concrete, and the concrete dome of the Pantheon is the worlds largest unreinforced concrete dome.

After the Roman Empire collapsed, use of concrete became rare until the technology was re-pioneered in the mid-18th century. Today, concrete is the most widely used man-made material.

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