Cattle fence spec for Canadian ranches: 4 wire systems

Application drives the spec

Cattle fence spec depends on application. Cow-calf operations on extensive range — 4-strand barbed wire on T-posts at 16′ centres is still the cost baseline; 6-strand high-tensile smooth wire energized to 4–6 J is the modern alternative with comparable hold-pressure at lower long-term cost. Feedlots with high cattle density and constant pen pressure — woven wire (page wire 1047-6-12.5 or similar) with steel pipe top rail at 4–6′ height; corner panels often combination woven-wire-plus-cable for impact tolerance. Dairy with twice-daily handling and tight lanes — pipe-rail or cable-rail with rubber-pad treadmill flooring at gates; less about containment and more about animal flow. Rotational pasture — permanent perimeter (woven wire or high-tensile) plus portable electric interior fence (poly-wire on reel-and-stake) for daily-move strip grazing.

Class 3 galvanizing is the agricultural standard

Class 3 galvanizing is the agricultural standard zinc spec — 0.80 oz/ft² minimum coating weight, roughly 3× residential Class 1. Service life 20+ years with ground-contact and livestock-rub conditions. Confirm with the mill-test certificate; cheap imported wire is often Class 1 sold as agricultural.

Post spacing and corner bracing

Post spacing: T-posts at 16′ centres for standard cattle, 12′ for high-pressure feedlot or sloped sites. Corner and end bracing critical — H-brace (two posts with a horizontal rail and diagonal tension wire) is the universal standard; deadman anchors (buried cross-tie) work in soft soil; cable bracing for high-tensile.

Volume freight economics

Volume economics: a full-truckload (typically 22 pallets) of woven wire ships at roughly 50% the freight rate per LF of an LTL pallet order. For a 5,000+ LF perimeter project, freight savings on a full-truckload order frequently cover 80–100% of the volume discount on the wire itself.