What Are Passive And Active Force Protection Barriers?

Posted by Michelle Goodwin on Tue, Mar 29, 2016

Active Vehicle Barriers

These create a secure environment by blocking a path or route but open or move to allow passage when necessary. Barriers are considered active when they can be moved to allow access, but keeps unwelcome visitors outside.

Vehicle access control points or entry control points where credentials and/or vehicle contents are checked might require installation of an active vehicle barrier (AVB) at the end of the access corridor.

Drop arm barriers  use a beam extending across the road. Usually the beam, or arm, swings vertically to allow the vehicle to pass, but horizontal swinging versions and telescoping beams are also available.  

Retractable Bollards are another common type of AVB. They are frequently used where they are normally in an up position and only need to be operated infrequently.

 
Passive Traffic Barriers

Temporary Fences and Barricades keep the job site or outdoor event enclosed by softly directing foot and vehicle traffic to a designated zone that can be broken down and set up quickly at any location at any point as needed. Typically construction sites use tall movable chain link fences to protect the public from and treacherous sections of a project. 

Swing gates designs require a massive steel counterweight (many thousands of pounds) to balance the beam, and a large capacity hydraulic system to move the beam.

Upswing barrier gates  can be used for a variety of commercial applications, including business parking lots, apartments, and traffic control.

Wedge barriers get their name because of their wedge shape when viewed from the side. They are also sometimes called plate barriers because the most common type uses a steel plate angled toward the approaching vehicle. This can be achieved by placing Jersey wall barriers in a way that creates a maze for the vehicle to maneuver.

This effectively forces the vehicle to slow down while permitting clearance.

Passive barriers are permanent obstacles that protect a building or property from vehicle interference.

Passive barriers have no moving parts; their effectiveness relies on their ability to absorb energy and transmit it to their foundations. 

Concrete walls if properly designed and constructed, can certainly perform well as a barrier. Key elements in the effectiveness of such walls are their height, thickness, reinforcement, and foundation depth.

Terrain can be used as an effective vehicle barrier. It is difficult for certain types of vehicles to pass or traverse ditches that have sufficient width, depth and overly steep side slopes. Berms also can be effective if properly configured.

Bollards are short, vertical posts used to protect potentially vulnerable structures or objects from damage by moving vehicles.

Designed for versatility, these posts range in size from 24” to 42”in height, and come in variable diameters to meet a location’s specific security requirements.

Bollards can be used to maintain a more natural look, while providing crash-rated security. 

 

Security provided by barriers is available with many different degrees of safety options.Whether the solution is permanent or somewhat temporary, depends on a facility's unique needs as well as various external factors.  Safety access, value of the secured property, and the risk of intrusion associated within the enclosed area are all essential questions to arriving at your barrier solution.

Barrier systems are built to specific standards set forth by the Department of State (DOS) and meet three levels of security K4, K8, and K12.  

Depending on the facility, the level of protection can be increased or decreased by the use of these barrier enclosures.

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Active Force Protection Barriers are used to create ATFP entry systems and gates.

The appropriate type of barrier depends on a number of factors. In this article we consult some of the most common barrier security applications.Security provided by barriers is available with many different degrees of safety options.Whether the solution is permanent or somewhat temporary, depends on a facility's unique needs as well as various external factors.  

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Safety access, value of the secured property, and the risk of intrusion associated within the enclosed area are all essential questions to arriving at your barrier solution.

Barrier systems are built to specific standards set forth by the Department of State (DOS) and meet three levels of security K4, K8, and K12.  

Depending on the facility, the level of protection can be increased or decreased by the use of these barrier enclosures.

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Topics: Bollards, ATFP, High Security Fence, Commercial Fence, Fence, fence law, high security, access gates, barriers, crowd control, pedestrian traffic

Design Build: The Simple Solution for a Complicated Fence Project

Posted by Michelle Goodwin on Wed, Mar 23, 2016

Design Build project is  when the traditional “bid” step of design-bid-build format is circumvented by entrusting the task a subcontractor to design and build the project. Depending on the circumstances, the cost incurred by hiring an architect or additional engineer is eliminated alongside the middle man. 

A professional commercial or industrial fence contractor that has proven experience with design build, will be able to both design and price your enclosure solution based on specifications.

As a side note, smaller more intimate level, almost all residential customers can be considered the "owner" and the subcontractor designs and builds the fence based their needs.

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Buyers & Builders

For example, VDOT and military specifications are exceptionally strict.
The fence company involved should have a working knowledge of how the requirements affect the job. Design–build places the responsibility for design errors and omissions on the design–builder, relieving the owner of legal and managerial responsibilities. The burden for these costs and associated risks are transferred to the design–build team.

ASTM specifications play a very large part these types of projects because very rarely is the specification drawn out on the plans. They often require a vast array of specifications that its typically in the best interest of the property construction team to hire a professional.

This simplifies the work of the buyer and streamlines the construction process.

Often, commercial construction managers and the property owner, will collaborate in order to organize the needs of the customer by fielding the information to selected design/build subcontractors.

This is especially true when the fence job must involve several trades to work together. Without the right experience and resources, a new fence company might miss specifications and codes needed for that particular job.

Depending on whether the project is commercial, military, or federal, the requirements can vary greatly and affect cost structure.

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Above is Pitt Field at University of Richmond. This projects required several additional designs including windscreen, an upgrade to industrial aluminum fencing and galvanized chain link fence that meets athletic field specs.

Accounting for Accountability

By relieving the buyer or property owner of the building responsibility, an experienced design build team allows greater productivity with fewer costs. It gives the builder teams the ability to install their work using their knowledge and resources. As a result, the quality of work of the project will improve.

While the buyer is still responsible for communicating his or her needs and desires with the project, the builder must be highly competent to understand appropriate requirements and restrictions. By creating the direct connection between the builder and the subcontractors, the buyer is able to focus their efforts on the overall outcome.

Design–build can save time and money for the owner, while allowing a chance to achieve innovation on the project. Design–build allows owners to avoid being placed directly between the architect/engineer and the contractor which under design–bid–build process, the owner takes on more legal risks in that position. The design build process has been used for centuries to increase productivity and reduce cost, but it is only recently making a significant comeback in the construction industry. Design build is becoming more common in the United States and abroad, giving fence companies a larger role in this process.

 

Topics: Government Fence, Fence Design, High Security Fence, Prison Fence

What Is Anti Terrorism Force Protection or ATFP Perimeter Security?

Posted by Michelle Goodwin on Sat, Jan 30, 2016

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k rated fence

ANTI TERRORISM FORCE PROTECTION (ATFP)

The United States Marines defines Antiterrorism/Force Protection as a “security program designed to protect military personnel, civilian employees, family members, facilities, and equipment in all locations and situations from the calculated use of violence or threat of violence to inculcate fear, intended to coerce or to intimidate governments or societies in the pursuit of goals that are generally political, religious or ideological.”

AT/FP perimeter security systems are generally used when the highest level of protection is needed. They are used around government buildings like the Pentagon, prisons, jails, nuclear power plants, Federal Reserve banks and other high-security buildings.  ATFP systems are designed to reduce the vulnerability of and to protect lives, facilities, equipment and information. In fencing, Anti-Terrorism & Force Protection refers to how much force a structure can withstand before becoming compromised by an attacker.

The following ratings have been used to issue contracts for Crash Rated Fences since 2000:

  • K4 rating is for a vehicle traveling 30 mph

  • K8 rating is for a vehicle traveling 40 mph

  • K12 rating is for a vehicle traveling 50 mph

K-Ratings are levels of barrier protection as determined by the Department of State (DoS). A 'K' Rating is also known as a Crash Test Certification. K Ratings are given to a fence, bollard, gate, or other barrier to indicate how effective that barrier is at protecting what it is guarding by measuring the barrier's stopping power in relation to the speed and weight to an incoming vehicle. The standard unit of measurement is based on a 15,000 lb. (6810 kg.) gross weight vehicle impacting a barrier perpendicularly.

In order to be DOS certified, the barrier must not bend beyond 39 inches past the preventative impact boundary of the barrier when penetrated by a vehicle.

 

What kind of wrought-iron, steel, or aluminum ornamental type of Fence is ATFP Compliant? Steel fences are the Anti-Terrorism/Force Protection standard for high-security government buildings; but basically any commercial or residential fence can be made ATFP compliant by installing cable or beam reinforcements.

Steel cables are cemented into the ground and wrung along the accompanying fence or gate. Bollards are short and thick (iron or steel) metal posts set at even intervals. They are often times used to control traffic, but bollards can also be used to make certain fencing ATFP compliant.Reinforcement measures and ornamental fences can make AT/FP fence or gate requirements very expensive.

Part of the United States Policy on Terrorism dictates that all lawful measures to prevent [terrorism] acts and bring to justice those who commit them will be taken. Therefore, while Anti-Terrorism Force Protection fencing systems may be costly, they are often necessary.


The James River Water Treatment pump in Shockoe Bottom Richmond is enclosed by 12 ft. curved spiked picket black steel Black, steel ATFP Compliant Security Fence at US Naval Base in July 2015.

 

Topics: ATFP, Government Fence, Perimeter Security, High Security Fence, Commercial Fence, Maximum Security Fence, spiked picket fence

  

Posted by Michelle Goodwin on Thu, Sep 03, 2015

The Definition of Protection: What exactly is "High Security" Fencing          
Security Fencing is usually 8-feet high or taller and is topped with a minimum of three strands of barbed wire.


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High Security Fence can mean many things to many people, but generally it is a combination of wire fencing fabric or panels topped with razor wirebarbed wireconcertina wire or any combination of these products.

Other forms of high security fencing could include welded wire, anti-climb mesh, expanded metal, spiked picket steel fence, wall spikes and electrification.

fence installation specialist can more readily explain these terms. In addition, a ‘mow strip’ will sometimes accompany a high security fence. Normally these mow strips are a minimum of 12-inches wide and 6-inches deep and they serve to keep vegetation off the fence and identify areas of potential digging. These are very common on prison fencing projects.

Who uses high security fence? By far the primary users of these products are correctional institutions that use a combination of most of the previously mentioned products.

Correctional facilities would add concertina wire, anti-climb mesh, man traps manual and automatic bollards and on site guards to upgrade to its security requirements.


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Sensitive military, government and nuclear power plants use all of the components previously mentioned and add fence shaker systems, infrared devices, cable reinforcement and anti-ram devices (K-12 rated anti- ram rating) to complete its security requirements.

Military bases and federal government facilities also use this type fencing in conjunction with anti-ram systems that are 
K-rated (hyperlink).

Airports, fuel depots, power stations and chemical plants are common users of high security fence. Local courthouses also find high security fence useful.

When developing a plan regarding what degree of security is required to protect your fenced area it will most often start with a high security fence.  

 

 

 



 

A typical high security fence installed at an airport consists of an 8-foot high fence with three strands of barbed wire, video surveillance and a card in card out access control system.

Correctional facilities would add concertina wire, anti-climb mesh, mow strips, man traps and on site guards to upgrade to its security requirements

Sensitive military, government and nuclear power plants use all of the components previously mentioned and add fence shaker systems, infrared devices, cable reinforcement and anti-ram devices (K-12 rated anti-ram rating) to complete its security requirements.

K4 barriers will stop a 15,000 pound vehicle traveling at 30MPH

K8 barriers will stop a 15,000 pound vehicle traveling at 40MPH

K12 barriers will stop a 15,000 pound vehicle traveling at 50MPH

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We hear the term security fence, gated community and secure environment all the time. As I stated in the beginning, high security fence can mean many things depending on the project scope and scale.

Homeowners may consider a 6-foot high privacy fence a security fence, but the keyword here is privacy and though it does help with intrusion it is not officially term high-security.

Gated communities provide barriers to traffic, however they offer very little deterrent to pedestrian intrusion. Chain link fences 6-feet high or less, even with barbed wire, are not what the fence industry considers High Security Fence simply because of the lower height of the fence.

The key point in planning a High Security Fence project is to remember the 8-foot or higher industry specification.

Border High Security Fence has been in the news both in this country and Israel as a deterrent against illegal entry across the borders of both countries. As with all high security fence systems a combination of fence material, anti-ram, anti-terrorism and surveillance products are integrated to suit the degree of security desired at a specific location.

All of the products mentioned working in conjunction with an access control system combine to form a high security environment for each specific customers fencing project.

High Security Fence has never been in greater demand. When you hear different terms like  ATFP and ASTM fence know that there are many perspectives on the meaning of High Security Fence.

Always ask your chosen Professional Fence Contractor what they consider "high security" for your exact job specifications. YOu now have the basics but they should do the heavy lifting for you.

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Topics: High Security Fence

Cutting Edge Fencing: Surrounding your Property with Barbed Wire

Posted by Michelle Goodwin on Sat, Jun 20, 2015

 

 

Barbed Wire & Barbed Tape: A Cutting Edge Partnership in Security Fencing

Without a doubt, the primary use for barbed wire and barbed tape ib the US is for perimeter security. This brief will give you a better understanding of the uses and benefits of this highly effective security fence application. Both barb wire and barb tape are almost always used in precarious commercial environments. Properties where large outdoor machinery automobiles, and large property areas that are out of direct eyesight will ensure that these areas are accounted for. The aggressive appearance of the wire is sometimes thought to detract from the visual appeal and diminish a commercial property's value. In actuality, an area secured with the addition of these tried and true fence materials provide a utilitarian security that affords immeasuable fence cost benefits both short and long term use.


barb_wire barbwwire fencing, farm fences, security fences 

Barb Basics

Barbed wire is a type of fencing wire that has sharp or pointed edges typically around 5 or so inches. It is used as an inexpensive yet effective added security measure for small and large, rural and urban properties alike. Originally for farm fence, it gained urban acclaim in the early 20th Century and expanded to a means of to keep people as well as city critters out of private and restricted areas. 

Barbed wire and barb tape were brought into the mainstream farming community by this guy. Glidden refined Henry Rose's original single-stranded barbed wire design and significantly improved upon it by using two strands of wire twisted together to hold the barbed spur wires firmly in place. Glidden’s wire also soon proved to be well suited to mass production techniques, and by 1880 more than 80 million pounds of inexpensive Glidden-style barbed wire was sold, making it the most popular wire in the nation.

 

 

Small but Mighty

barbedwirefence, barb wire fence, barb wire, rural fences, cattle fences barb wire chain link fences, barb wire chain link, barbwirechainlink
 

A person or animal trying to pass through or over a fence will surely have discomfort and obtain possible serious injury from sharp barbs. A qualified and highly skilled fence company can construct or add these commercial fence features quickly and easily. Don't be mislead by the quick turnaround of this sort of fence installation. 

Fence pros have taken the required OSHA safety courses to know how this precarious security fence application should be handled and installed.Some projects may require, five, six and even seven strands of wire may be used to maximize fence height and minimize spacing between wood farm fence installations. The wire is aligned under tension between braced heavy fence posts. The addition of barb wire is widely used in the military security, state and federal prisons, detention houses, data centers, government buildings and other national security facilities. 

One of the biggest commercial uses for fence particularly barbed wire in Virginia is for enclosed farm fencing where animals are often transported, bought or sold.Ask a fence contractor and they'll concur that more often than not, a well-built yet minimally maintained 3 of 4 wirewire fence will suffice in most instances. 

Applications

12 ½ gauge is an industrial gauge that meets military specifications. 15 ½ gauge barb wire is typically used for light commercial grade and temporary fencing. One of the benefits to 15 ½ gauge is that the barbs are sharper. Barb wire comes in galvanized and vinyl coated steel. Vinyl coated  barb can come in green or black and the actual barbs are not coated. Barbwire is made of low carbon steel wire or galvanized wire with the twisting processing by the barbed wire machines.Materials: low carbon steel wire, PVC coated wire, zinc coated wire, iron wire.

Barb Wire Uses

-Land fencing and protection
-Animal cage
-Neighborhood and Business security fencing aid.

          -fencing with chain link fence or welded wire mesh fence.

  • Features:  No stretching required when installing
  • Barbs fixed between wires
  • Adaptable for all fencing needs.  
  • Uniformly zinc coated

Typically, a new roll of barbed wire is 80 rods [1,320 feet (ft.)] in length and consists of double strand galvanized wire with barbs attached  at intervals of about 4 inches.

A lower grade barb wire can be used to prevent animals on farms and refuges, but chain link with 3 to 6 strands on top is used for commercial or military grade fence.Barbwire fencing, hurricane fence, richmond barb wire fence, rva fence, barb wire fencing richmond

barb wire fence, security barb wire, barbwire fencing, commercial barbed wire, barbed wire fencing, hospital fence, prison fence

 

A mesh of metal strips with sharp edges whose purposeis to prevent passage by humansThe term "razor wire", through long usage, has generally been used to describe wire tape products. While razor wire is much sharper than the standard. Named after its appearance, but is not actually razor sharp. However, the points
are very sharp and made to rip and grab onto clothing and flesh.

-Source: Wikepedia

barb wire fencing,barbed tape, barb wire tape, wire tape BarbedTape1, barbed tape, barbwire tapes, tape wire, wire tape, barbedwire tape
 
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Gauge in B.W.G. Approximate Length of wire per Kilo in Meter
Barbs Spacing 3" Barbs Spacing 4" Barbs Spacing 5" Barbs Spacing 6"
12 × 12 6.0617 6.7590 7.2700 7.6376
12 × 14 7.3335 7.9051 8.3015 8.5741
12-1/2 × 12-1/2 6.9223 7.7190 8.3022 8.7221
12-1/2 × 14 8.1096 8.814 9.2242 9.5620
13 × 13 7.9808 8.899 9.5721 10.0553
13 × 14 8.8448 9.6899 10.2923 10.7146
13-1/2 × 14 9.6079 10.6134 11.4705 11.8553
14 × 14 10.4569 11.6590 12.5423 13.1752
14-1/2 × 14-1/2 11.9875 13.3671 14.3781 15.1034
15 × 15 13.8927 15.4942 16.6666 17.5070
15-1/2 × 15-1/2 15.3491 17.1144 18.4060 19.3386

Here is a handy chart to help you start the conversation with your pro fence contractor what works for your property.
Generally accepted razor lengths:
  • short razor wire has barbs from 10 mm to 15 mm long
  • medium razor wire has barbs 20 mm to 25 mm long
  • long razor wire has barbs from 60 to 66 mm long.
  • Razor wire is much sharper than the barbs of barbed wire. The sharp edges of the wire can seriously
    injure any person attempting to pass through.

A Good Starting "Point".

Always contact a local AFA, Blue Ribbon or Osha Certifed Fence Contractor.

Depending on the nature of the fence you hope to install, you should always hire a professional to make sure the job is done correctly in a timely fashion. If your fence project requires design build, an experienced security contractor or commercial fence builder is definitely the way to go. Both professionals have the knowledge and expertise to get your new fence installed safely, and as quickly as possible.

Topics: Military Fence Installations, Fence Design, Perimeter Security, High Security Fence, Commercial Fence, Maximum Security Fence, barb wire fence, barbed wire, farm fencing

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