fencing options for your grazing system 2011 georgia grazing school john w. worley
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Fencing Options for Your Fencing Options for Your Grazing SystemGrazing System
2011 Georgia Grazing School2011 Georgia Grazing School
John W. WorleyJohn W. Worley
Fencing SystemsFencing SystemsPlan the system before buildingPlan the system before building
Choose the right materialsChoose the right materials
Use the right construction techniquesUse the right construction techniques
Don’t let a “temporary fence” turn into a Don’t let a “temporary fence” turn into a high maintenance permanent fencehigh maintenance permanent fence
Types of FencesTypes of FencesField Fence (Page wire, hog wire, woven Field Fence (Page wire, hog wire, woven wire) w/ barbed wire at top wire) w/ barbed wire at top – Perimeter and baby calf areasPerimeter and baby calf areas
Types of FencesTypes of FencesBarbed wireBarbed wire– Where electric doesn’t work wellWhere electric doesn’t work well
Types of FencesTypes of FencesElectric (Note vinyl coated wire)Electric (Note vinyl coated wire)
Wire TypesWire Types
Steel (Standard or Steel (Standard or High TensileHigh Tensile))– Single, barbed, wovenSingle, barbed, woven
Galvanizing (Class I or Galvanizing (Class I or Class IIIClass III))
Vinyl Coated (including conductive)Vinyl Coated (including conductive)
Electric Tapes and RopesElectric Tapes and Ropes– TemporaryTemporary– PermanentPermanent
Post TypesPost Types
WoodWood– Treated (at least 0.6 lb/ftTreated (at least 0.6 lb/ft33))– CCA replaced by ACQCCA replaced by ACQ– Untreated (Landscape Timbers are untreated Untreated (Landscape Timbers are untreated
or lightly treated)or lightly treated)
Steel (Painted and Galvanized)Steel (Painted and Galvanized)Plastic (Temporary electric)Plastic (Temporary electric)FiberglassFiberglass– Sucker Rod (High Density FG)Sucker Rod (High Density FG)
MaterialsMaterials
Perimeter FencingPerimeter Fencing– Recommend High Tensile, Class III Recommend High Tensile, Class III
galvanized wiregalvanized wire– Galvanized Steel or Treated Wood PostsGalvanized Steel or Treated Wood Posts– Class III galv. staples (1 ¾”)Class III galv. staples (1 ¾”)
Cross FencingCross Fencing– If truly temporary, use plastic posts and If truly temporary, use plastic posts and
electric rope or tapeelectric rope or tape
Components with Similar LivesComponents with Similar Lives
Painted Posts with Class III Painted Posts with Class III galvanized wiregalvanized wire
How Long Will It Last?How Long Will It Last?Painted Posts with Class III Painted Posts with Class III galvanized wiregalvanized wire
How Long Will It Last?How Long Will It Last?Galvanized Posts with Class I Galvanized Posts with Class I galvanized wiregalvanized wire
How Long Will It Last?How Long Will It Last?Galvanized Posts with Class I Galvanized Posts with Class I galvanized wiregalvanized wire
How Long Will It Last?How Long Will It Last?
Painted Posts, Class I woven Painted Posts, Class I woven wire, Class III barbed wirewire, Class III barbed wire
Fence ChargersFence Chargers(Controllers, Energizers)(Controllers, Energizers)
Mile rating is not a good indicatorMile rating is not a good indicator
Look for ratings at different loads Look for ratings at different loads (ohms)(ohms)– 50,000 ohms (fence in good condition)50,000 ohms (fence in good condition)– 5,000 ohms5,000 ohms– 500 ohms500 ohms– 100 ohms (fence in poor condition)100 ohms (fence in poor condition)
At least 1000 volts @100 ohmsAt least 1000 volts @100 ohms
Cost per MileCost per Mile
0
2000
4000
6000
8000
10000
$/Mile
Woven Wire
Barbed Wire
Electric
BRACESBRACESand and
INSTALLATIONINSTALLATION
H BraceH BraceStrongest BraceStrongest Brace
Top member 2 to Top member 2 to 2 1/2 x height of 2 1/2 x height of fencefence
Pinning BracesPinning Braces
Min. 3 ft.
Min. 8 ft.
Pinning BracesPinning Braces
3/8” Galvanized Rod3/8” Galvanized Rod
Installing Brace WireInstalling Brace WireAllow wires to slipAllow wires to slip
Installing Brace WireInstalling Brace WireTensioning the wire braceTensioning the wire brace
Dead-Man BraceDead-Man Brace
Need Larger PostNeed Larger Post
Not as StrongNot as Strong
Easier to BuildEasier to Build
Stapling TechniqueStapling Technique
Leave Wire LooseLeave Wire Loose
Only Horizontal WiresOnly Horizontal Wires
Rotate from Vertical Rotate from Vertical (Rotate away from (Rotate away from slashes)slashes)– Right for right-handed Right for right-handed
staplesstaples– Left for left-handedLeft for left-handed
1 3/4” Galvanized Staples1 3/4” Galvanized Staples
Post InstallationPost Installation
Driven wooden posts are strongerDriven wooden posts are stronger
Drive Small End DownDrive Small End Down
Post InstallationPost InstallationProper Tamping ProcedureProper Tamping Procedure
Electric Fence GroundingElectric Fence GroundingProper grounding of charger is vitalProper grounding of charger is vital– 3 or more 8-ft rods3 or more 8-ft rods– 10 ft apart10 ft apart– Separate from other electrical groundsSeparate from other electrical grounds– Drive and attach underground to prevent mower Drive and attach underground to prevent mower
damagedamage– Never Concrete OverNever Concrete Over
Ground Alternate WiresGround Alternate Wires
Lightning ProtectionLightning Protection
Good grounding is essentialGood grounding is essential
Nothing is “Lightning Proof”Nothing is “Lightning Proof”
Use devices sold by charger Use devices sold by charger manufacturer to maintain warrantymanufacturer to maintain warranty
Lightning ProtectionLightning Protection““Choke” and “Lightning Arrestor”Choke” and “Lightning Arrestor”
Separate (Better) Grounding SystemSeparate (Better) Grounding System
Protect Source side as well as fence sideProtect Source side as well as fence side
Energizer
EnergizerGround
LightningArrestor
Lightning Ground
Choke
Cut-outSwitch
10-ft apart 10-ft apart
At least50 ft
8-ft Rods
Protection at Power Source
QUESTIONS ?QUESTIONS ?