Fence structures
FlexZone Product Guide
Page 9
Standard flexible fence types
Chain-link fence
Chain-link fence is comprised of steel wires that are bent lengthwise into zig-zag patterns. The
zig-zag wires are vertically woven to form the characteristic diamond pattern. The fence fabric is
attached to fence posts approximately 3 m (10 ft.) apart. Tension wires are often used to stiffen the
fence fabric at the top, bottom and middle of the fence. Chain-link fences are available in different
heights and are sometimes vinyl coated.
Welded-mesh fences
A typical welded-mesh fence section consists of steel wire welded into a grid, with horizontal
spacing differing from vertical spacing. These fence sections are secured to fence posts and often
include top and bottom rails.
Expanded metal fences
Expanded metal mesh is typically comprised of a metal material with diamond shaped holes.
Metals can be expanded in a range of material thickness and to a broad choice of patterns to suit
specific applications. Expanded metal mesh is available with a variety of diamond size openings
and gauges that can be attached to a typical fence framework of round pipe and line rails.
Note
High-security welded-mesh and expanded metal fences are comprised
of heavier gauge metal than the standard flexible fence types.
Therefore, these high-security fence types may have to be defined as
Rigid fences via the UCM. Begin testing with the Flexible fence setting
and use the Rigid fence setting only if adequate detection sensitivity
cannot be achieved at the Flexible fence setting.
Figure 1: Standard flexible fence types
chain-link
welded-mesh
expanded metal