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Barbed wire for agriculture use is typically double-strand 12 + 1 ⁄ 2-gauge, zinc-coated (galvanized) steel and comes in rolls of 400 m (1,320 ft) length. Barbed wire is usually placed on the inner (pasture) side of the posts. Where a fence runs between two pastures livestock could be with the wire on the outside or on both sides of the fence.
Concertina wire or Dannert wire [1] is a type of barbed wire or razor wire that is formed in large coils which can be expanded like a concertina. In conjunction with plain barbed wire (and/or razor wire/tape ) and steel pickets , it is most often used to form military-style wire obstacles .
The barbed wire was arranged in a cat’s cradle formation that for every 12 yards of barbed fence built, 420 yards of barbed wire was strung (or 35 yards of wire per yard of fence). [ 1 ] Later versions of this type of barbed wire were manufactured by Germany during the First World War.
The aircraft landed at low speed into a barbed wire fence ... Length: 19 ft 6 ... Empty weight: 370 lb (168 kg) Gross weight: 740 lb (336 kg) Fuel ...
The effectiveness of any wire obstacle is greatly increased by planting anti-tank and blast antipersonnel mines in and around it. Additionally, connecting bounding anti-personnel mines (e.g. the PROM-1) to the obstacle with tripwires has the effect of booby-trapping the obstacle itself, hindering attempts to clear it.
Barbed tape ("razor wire") vs. barbed wire refers to the type of cutting surface on the wire; steel wire points vs. steel tape blades. Whereas "concertina" refers to the shape of the interlocking, expandable coils into which the wire is formed, and can be made from either barbed wire or barbed tape.
He found that by placing the wire between the pins and turning the crank a uniform barb resulted. [5] How to crimp the barbs to the wire was solved, in the barn, by tying one end of the wire and another length of wire to a poplar tree on the grounds of the Glidden House and the other ends of the wires to a grindstone.
The strongpoints were surrounded by nearly fifteen circles of barbed wire and minefields to a depth of 200 metres (660 ft). A strongpoint's perimeter averaged 200–350 metres (660–1,150 ft). The bunkers and shelters provided protection against anything less than a 500 kg bomb, and offered luxuries to the defenders such as air conditioning.