Rural Find

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FENCING DATA

Wire – how much tension to use

The recommended tensions below will aid the building of sound stock-proof fences.

Gauge (mm)
Length per 25kg coil (Metres)
Yield point (approx kg)
Breaking load (kg)
Maximum recommended tension (kg)
High-Tensile Wire
1.6
1584
160
200
80
2.5
648
480
600
150
3.15
408
640
800
200
Mild Steel Wire
2.0
1013
115
150
65
2.5
648
150
200
80
3.15
406
265
350
150
3.55
321
340
450
200
4.00
253
450
600
250

Posts, Strainers, Stays, Angles, Battens, Standards

Item
 
Length (m)
Diameter (mm)
Approximate avg weight (kg)
Treated Pine Posts*
    
No. 1
 
1.8
115-165
13.9
No. 2
 
1.8
90-114
7.4
No.3
 
1.8
63-89
4.1
     
Strainers*
    
  
3.0
200-250
59.6
heavy
2.7
200-225
47.9
 
2.4
200-225
42.6
     
  
3.0
175-200
41.4
medium
2.7
175-200
37.3
 
2.4
175-200
33.1
     
  
3.0
150-175
31.1
light
2.7
150-175
28.0
 
2.4
150-175
24.9
     
Stays*
 
24
110 avg
11.4
Angles*
    
heavy
 
2.1
150-175
21.8
light
 
2.1
115-150
14.5
Battens*
 
1.2
50 x 50
1.9
Steel Standards*
 
1.5
–
2.9
  
1.65
–
3.2
  
1.8
–
3.6

Weights will vary, depending on moisture content.

Semi-dry (25-50% m.c) weigh about 0.5 tonne per cu m.

Wet (80-90% m.c) weigh about 1.0 tonne per cu m.

Posts per km: Number of posts required per km using straining posts 200m apart, i.e. 5 to the kilometre, is given below:

ommended tensions below will aid the building of sound stock-proof fences.

Posts 3m apart: 328
Posts 4m apart: 245		Posts 5m apart: 195
Posts 6m apart: 162		Posts 7m apart: 138
Posts 8m apart: 120

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