Barbed wire fences remain the standard fencing technology for enclosing cattle in most regions. The wire is aligned under tension between heavy, braced fence posts (strainer posts) and then held at the correct height by being attached to wooden posts and battens, or steel star posts. The gaps between star posts vary depending on terrain. On short fences in hilly country they may be placed every 3 yards (2.7 m), while in flat terrain with long spans and relatively few stock they may be spaced up to 30 to 50 yards (46 m). Wooden posts are normally spaced at 2 rods (10 m) in any case with 4 or 5 battens in between. Many farmers place posts 2 meters apart as battens can bend causing wires to close in on one another.
Barbed wire for agricultural fencing is typically available in two varieties¡ª"soft" or mild-steel wire and "high-tensile". Both types are galvanized for longevity. High-tensile wire is made from thinner but higher-strength steel. Its greater strength make fences longer lasting because cattle cannot stretch and loosen it. It copes with the expansions and contraction caused by heat and animal pressure by stretching and relaxing within wider elastic limits. It also supports longer spans, but because of its "springy" nature it is hard to handle and somewhat dangerous for inexperienced fencers. Soft wire is much easier to work but is less durable and only suitable for short spans such as repairs and gates, where it is less likely to tangle.

	Barbed Wire Fence

Specifications
Barbed wire

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