![]() A business, for example, that requires both attracting walk-in customers AND securing the premises sends a mixed message with a welcoming façade all tied up with a barbed-wire bow. That’s because in today’s modern world, fences used for security purposes must also typically be aesthetically pleasing. Fencing has come a long, long way since those old movies depicting razor wire and guard dogs, and security fences are practically at the top of the list of fence categories when it comes to overall improvement. The ends of tubes and hollow sections are to be capped or sealed.What do you imagine when you think about a security fence? Barbed wire? Sky-high chain link topped with all sorts of sharp and pointy deterrents? Anything but attractive, welcoming and architecturally inspired, right? Well, you’re not alone, but you’re also behind the times.Heavy duty chain link mesh for wire diameters of 5.0 mm zinc coated and 4.70 mm/6.4 mm plastic coated.Normal chain link mesh for wire diameters of 3.55 mm zinc coated and 3.55 mm/4.75 mm plastic coated.Circular hollow post height is excluding extension arm.The ends of hollow sections are to be capped or sealed. All struts shall have a horizontal tie bar not less than 600 mm long, securely fixed to strut and straining post with bolts not less than 8 mm nominal diameter.Table 2: Recommended dimensions for steel posts and struts Type of post Plastic coated chain link with plastic coated wire (core wire/external wire) Table 1: Diameters of wires in chain link mesh Zinc coated chain link with zinc coated wire Extension arms for intermediate posts: Extension arms for intermediate posts shall be holed for the attachment of two 8 mm bolts and to take hair pin staples or stirrup clips for fixing three lines of barbed wire.Extension arms for straining posts and gate posts: Extension arms for steel posts have the same section as the post, either integral or welded, or separate for bolting to the top of the post.Zinc coated extension arms for zinc coated posts, and plastic coated extension arms for plastic coated steel posts.Holed for the attachment of three lines of barbed wire.Extension arms for barbed wire, straight or bent at an angle of 40° to 45° from the vertical.Extension arms for attachment of barbed wire.Short droppers shall be of a length to extend 25 mm beyond the line wire and at least 25 mm beyond the barbed wire. Short droppers for barbed wire: mild steel short droppers 25 mm × 5 mm thick, holed for the attachment of the bottom row of barbed wire and the top line wire.And holed for the attachment of the top three rows barbed wire. Hot dip galvanized Long droppers for barbed wire: mild steel long droppers 25 mm × 5 mm thick, more than 0.45 m long.For fastening down the bottom of plastic coated chain link fencing, use plastic coated hair pin staples with core diameter 3.55 mm and outside diameter 4.75 mm wire, bent outwards to secure anchorage.For fastening down the bottom of galvanized wire mesh fencing, use zinc coated hair pin staples with 3.55 mm diameter wire and 30 mm leg length, bent outwards to secure anchorage.For fixing barbed wire to extension arms or droppers, use galvanized hair pin staples with 3 mm diameter and 30 mm leg length.or 20 mm × 5 mm for 40 mm chain link mesh.25 mm × 5 mm for 50 mm chain link mesh.Stretcher bars, mild steel, flat, holed for attaching to cleats or to straining fittings by 8 mm bolts.Winding brackets for posts: mild steel, flat, 25 mm × 3 mm and fitted with a 12 mm winding bolt, with a friction type, ferrule or ratchet winder.Cleats: mild steel angle, 50 mm × 50 mm × 6 mm.Eye bolt strainers: 250 mm long bolts of at least 9.50 mm diameter, with an eye at one end.Post base plates and caps, bolts, nuts and washers.Chain link fence fittings: (zinc coated in accordance with BS EN 10244-2).Wire: high tensile 25 mm, aluminum/zinc wire, breaking load 7700 N.Material: galvanised steel, stainless steel (for extremely corrosive environments).Style: flat razor wire or concertina razor wires.Zinc and zinc-alloy coated steel barbed wire conform to BS EN 10223-1 (see table 4).Posts for use with barbed wire shall have integral extensions or be holed for the attachment of extension arms. Concrete components: concrete posts and struts.Wires: mild steel line wire, stirrup wire, tying wire, barbed wire (conform to BS EN 10223-1).Chain link mesh width: 2.4 m, or 2.7 m (buried 0.3 m).Mesh protective treatments: zinc coated, class A zinc alloy coated wire, or plastic coated.Chain link anti-intruder fence specification: ![]()
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