Berming Security Fencing Co. is undertaking a significant security infrastructure project in West Africa that involves the supply and installation of extensive perimeter fencing systems. The project scope includes approximately 14,270 meters of Razor Wire Barbed Tape fence and 19,450 meters of Chain Link Fence, in accordance with BS 1722 standards. Key components of the project encompass the provision of materials, on-site installation, and all necessary civil works to ensure a robust and secure perimeter.

Objectives

The primary objective of the project is to establish a durable, high-security fencing solution that effectively deters intrusion and enhances the safety of the designated facilities. The system will incorporate both Razor Wire Barbed Tape and Chain Link Fence components, with additional features such as corner posts, gates, straining posts, and footings.

Razor Wire Barbed Tape Specifications

• Material Composition:
  • High-tensile galvanized steel core wire (2.5 mm diameter).
  • Galvanized steel blade/strip (0.5 mm thickness) formed into razor-sharp barbs.
• Barb Spacing and Length:
  • Barbs spaced at approximately 26 mm intervals.
  • Each barb measures roughly 15 mm long and 13 mm wide.
• Coil Construction:
  • Razor wire coils arranged in a Coil Pyramid configuration with three concertina layers.
  • Each coil measures approximately 730 mm in diameter when fully deployed.
  • Coils preloaded in modules with a minimum length of 75 meters per module.
  • Equipped with anti-tangle strut wires to maintain coil separation.
• Support Structure:
  • Top support wire: 4.0 mm galvanized steel.
  • Straining wire: 3.5 mm galvanized steel, tensioned to maintain coil alignment.
• Ancillary Equipment:
  • Heavy-duty dove-tail clips for securing overlapping coils.
  • Clip applicators for fast and secure attachment.
  • Ground locking pegs for stabilizing the base of the coil pyramid.

The Razor Wire Barbed Tape is designed to prevent intrusion along perimeter barriers. It should be fabricated from high-tensile wire, which is virtually impossible to cut with standard tools, and feature a multitude of razor-sharp barbs formed at close intervals. The barbs must be designed to provide both piercing and gripping actions. The wire and strip should be constructed from galvanized steel to ensure corrosion resistance.

The fencing should be constructed in a Coil Pyramid with Top Support Wire, as depicted in the following diagram.

The fence system is designed for high-security applications, featuring a robust structure and compact configuration to prevent intrusion and ground crowding.

• Heavy-duty clips spaced at 600 mm centers: Clips are installed every 600 mm to secure the coils.
• 4 mm straining wire: The coils are fastened together using heavy-duty dovetail clips.
• Top coil with a diameter of 1250 mm: This is a standard coil with a stretch length of 12 meters.
• High-density coil with a diameter of 980 mm: This coil has a stretch length of 8 meters and features a smaller aperture to prevent ground crowding.

Packaging:

• The Razor Wire Barbed Tape must be factory-packaged in a manner that allows rapid deployment from a motorized trailer.
• All three coils must be deployed simultaneously from the trailer, requiring only ground support and the installation of clips to secure individual coils together.

Preloading and Configuration:

• The coils must be preloaded in magazines to enable rapid deployment.
• High-tensile anti-tangle strut wires must separate the coils.
• Each coil must be supplied in minimum lengths of 75 meters and compressed into compact modules.

Material Specifications

The Razor Wire Barbed Tape must be constructed from the following materials:

• Wire: 2.5 mm high-tensile galvanized steel.
• Blade/Strip: 0.5 mm galvanized steel.

Configuration

• The Razor Wire Barbed Tape should be configured as shown in the diagram below.
• This product ensures high security, durability, and ease of deployment, making it ideal for perimeter protection.

Chain Link Fence Specifications

• Mesh Material and Dimensions:
  • Manufactured from galvanized steel wire.
  • Wire diameter: 3.15 mm.
  • Mesh aperture: 50 mm by 50 mm (center-to-center of wires).
• Fence Height:
  • Standard height: 2.4 meters (can vary based on project requirements).
• Fence Posts and Corner Posts:
  • Intermediate steel posts (50 mm diameter, 3.0 meters length) spaced at 2.5 meters intervals.
  • Corner posts (75 mm diameter, 3.5 meters length) at fence turns for additional stability.
  • All posts galvanized and powder-coated for corrosion resistance.
• Straining Posts and Bracing:
  • Straining posts placed every 30 meters or at abrupt directional changes.
  • Bracing struts attached to straining posts at a 45-degree angle to counteract tension forces.
  • Straining wire (4.0 mm diameter) used along the top and bottom of the fence to maintain rigidity.
• Gates and Hinges:
  • Single-leaf pedestrian gates (1.0 meter wide).
  • Double-leaf vehicle gates (4.0 meters and 6.0 meters wide).
  • Gate frames constructed from 50 mm galvanized steel tubing.
  • Heavy-duty hinges and padlockable latch mechanisms included.
• Footings:
  • Concrete footings (350 mm diameter, 600 mm depth) for all posts, corner posts, and straining posts.
  • Reinforced with a steel baseplate to distribute load evenly and prevent tilting.
  • Gates installed with larger footings (500 mm diameter, 800 mm depth) to support frequent use and added weight.

Estimated Quantities and Dimensions for Additional Features

• Fence Total Lengths:
  • Razor Wire Barbed Tape: 14,270 meters.
  • Chain Link Fence: 19,450 meters.
• Posts:
  • Intermediate posts: Approximately 7,780 units.
  • Corner posts: Approximately 650 units (assuming one corner every 30 meters).
  • Straining posts: Approximately 650 units (based on directional changes and tensioning needs).
• Gates:
  • 10 pedestrian gates (1.0 meter wide).
  • 5 vehicle gates (3 gates at 4.0 meters, 2 gates at 6.0 meters).
• Concrete Volume for Footings:
  • Intermediate and corner posts: ~400 cubic meters.
  • Gates: ~25 cubic meters.
  • Total estimated concrete volume: ~425 cubic meters.

These specifications provide a detailed outline of the Razor Wire Barbed Tape and Chain Link Fence systems, including material dimensions, structural components, and installation requirements.

Deployment and Installation

• Razor Wire System:
  The Razor Wire will be installed as a Coil Pyramid configuration, supported by a top support wire. Using a motorized trailer system, the coils will be deployed rapidly in a synchronized manner, followed by ground support for securing the coils. This method allows for swift and efficient installation, reducing labor time while maintaining high security standards.
• Chain Link Fence System:
  Chain link fencing will be erected alongside the Razor Wire system to enhance perimeter strength. Expert contractor personnel will oversee the installation of fencing, gates, corner posts, and footings. The entire process will adhere to BS 1722 specifications to ensure consistency, durability, and long-term reliability.