British Standards Relevant to Agriculture

British Standard Summaries

BS1722:2 2000
Fences
Part 2: Specification for Strained Wire & Wire Mesh Netting Fences


The text herein is not a a full reproduction of the British Standard. It is summary based upon interpretation of the original text and not intended as a replacement for the full text. It should be used for general guidance only.

BS1722 is sub-divided into a number of individual standards concerned with fencing made from a wide range of construction materials - wire mesh, wood and steel. These can be broadly broken down as follows:

  • Parts 1 - 3 and Parts 10 & 13 - 14: Chain link or wire mesh fences
  • Part 4: Cleft chestnut pale fences
  • Parts 5 - 7 and Part 11: Board / wooden fences
  • Parts 8 - 9: Mild steel fences
  • Part 12: Steel palisade fences
  • Part 16: Organic powder coating used for plastic finishing on fence components and mesh.

BS1722:2 is concerned with providing a detailed specification for the construction and installation strained wire and wire mesh netting fences, gates and posts. It specifies requirements for fencing materials, their combination and erection.

General

  • Ground and local conditions may determine a variation in post depth from that specifically stated in the full Standard.
  • The full Standard allocates a reference code to each fence type, dimension and design.
  • All components should be free of sharp edges and burrs.

General pattern strained wire fences

  • Dimensions for fences, gates, posts and struts are given in the full Standard in tabular form.
  • Wire should conform to BS4102 or BS EN 10223.
  • Concrete posts and struts should be steel reinforced concrete. Detailed specifications are given in the full Standard.
  • Timber posts and struts should be square sawn timber or round timber and preservative treated.
  • The top of the fence should approximately follow the level of the ground along its length.
  • Concrete for the bedding of posts and struts should be at least one part cement to 10 parts graded aggregate of 40 mm nominal maximum size.
  • Straining posts shall be placed at all ends and corners of fences.  Struts should be fitted to all straining posts.
  • Intermediate posts should be fitted at intervals of not more than 3.5 m for mild steel wire fences or 10 m for high tensile wire fences with droppers.

Dropper pattern fences

  • Dimensions for fences, gates, posts and struts are given in the full Standard in tabular form.
  • Wire should conform to BS4102.
  • Detailed specifications for posts and struts are given in the full Standard.
  • The top of the fence should approximately follow the level of the ground along its length.
  • Droppers should be used to maintain the spacing of line wires between posts.
  • Straining posts shall be placed at all ends and corners of fences.  Struts should be fitted to all straining posts.
  • Intermediate posts should be fitted at intervals of not more than 7.5 m.

General pattern wire mesh fences

  • Dimensions for fences, gates, posts and struts are given in the full Standard in tabular form.
  • Wire should conform to BS4102, BS EN 10223-3, BS EN 10223-5, or BS1485 and BS443 as appropriate.
  • Concrete posts and struts should be steel reinforced concrete. Detailed specifications are given in the full Standard.
  • The top of the fence should approximately follow the level of the ground along its length.
  • Straining posts shall be placed at all ends and corners of fences.  Struts should be fitted to all straining posts. Posts and struts should not be tapered.
  • Intermediate posts should be tapered.

Sping steel and high tensile mesh fences

  • Dimensions for fences, gates, posts and struts are given in the full Standard in tabular form.
  • Wire should conform to BS4102, BS EN 10223-3, BS EN 10223-5, or BS1485 and BS443 as appropriate.
  • Line wire should be zinc or zinc alloy coated spring steel wire conforming to BS443.
  • Concrete posts and struts should be steel reinforced concrete. Detailed specifications are given in the full Standard.
  • The top of the fence should approximately follow the level of the ground along its length.
  • Concrete for the bedding of posts and struts should be at least one part cement to 10 parts graded aggregate of 40 mm nominal maximum size.
  • Straining posts shall be placed at all ends and corners of fences.  Struts should be fitted to all straining posts.
  • Intermediate posts should be fitted at intervals of not more than 15m for spring steel fences or 10 m on high tensile mesh fences.
  • Mesh should be attached to all posts so that the bottom wire is close to the ground and the mesh extends to full height up the post.
  • The top of netting for rabbit fencing shall be not less than 0.75 m above ground level. The bottom of the fence shall be either buried  150 mm and turned out towards rabbit harbourage for 150 mm or turned outwards at the surface for 150mm and held down with pegs a 1m centres.

A British Standard nor this summary does not, necessarily, include all the necessary information for correct implementation of the Standard to any specific application. This is purely the responsibility of the user. Standards are updated by either amendment or revision. Users should ensure that they are using the latest version.


The full text of this Standard can be obtained from the British Standard Institution

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