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Anchors

EZ30 30" Single Eye Screw Anchor

3 Foot (30") Long Telescopic TV Mast Down Guy Screw Anchor
Price$17.95
Manufacturer Code: EZ 30
Average Rating: 5
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ROHN GAS4303 Single Eye Screw Anchor

ROHN 3 Foot Long Down Guy Screw Anchor R-GAS4303
Price$24.95
Manufacturer Code: GAS4303
Average Rating: 5
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EZ48 48" Single Eye Screw Anchor

4 Foot Long Telescopic TV Mast Down Guy Screw Anchor
Price$28.01
Manufacturer Code: EZ 48
Average Rating: 5
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ROHN GAS604 48" Single Eye Screw Anchor

ROHN 4 Foot Long Down Guy Screw Anchor R-GAS604
Price$69.95
Manufacturer Code: GAS604
Average Rating: 5
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ROHN GAS625 48" Single Eye 10" Helix Screw Anchor

ROHN GAS625 48"" Single Eye 10"" Helix Screw Anchor
Price$59.95
Manufacturer Code: GAS625
Average Rating: 5
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6in x 66in Thimbleye Anchor Rod

Anchor, No Wrench, 6in x 66in Thimbleye
Price$29.95
Manufacturer Code: J6526WCA
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1/2 inch Heavy Strain Clevis Fastener for Guy Wire

1/2 inch Clevis Fastener Shackle
Price$37.95
Manufacturer Code: J732
Average Rating: 5
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Stock Level: 97
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ROHN EP25343 3 Hole Equalizer Plate Assembly for Concrete Down Guy Anchor Rod

ROHN EP25343 3 Level Guy Equalizer Plate Kit
Price$49.95
Manufacturer Code: EP25343
Average Rating: 5
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ROHN EP25345 5 Hole Equalizer Plate Assembly for Concrete Down Guy Anchor Rod

ROHN EP25345 5 Level Guy Equalizer Plate Kit
Price$69.95
Manufacturer Code: EP25345
Average Rating: 5
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ROHN Tower GAR30 Concrete Down Guy Anchor Rod with Single Eye

ROHN 25G 45G 55G 65G Tower Concrete Guy Anchor Rod with Single Eye R-GAR30
Price$42.50
Manufacturer Code: GAR30
Average Rating: 5
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ROHN Tower GAC303 Concrete Down Guy Anchor with 3 Hole Equalizer Plate Assembly

ROHN 25G 45G 55G 65G Tower Concrete Guy Anchor Rod with 3 Hole Down Guy Equalizer Plate Assembly R-GAC303
Price$89.95
Manufacturer Code: GAC303
Average Rating: 5
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ROHN Tower GAC305 Concrete Down Guy Anchor with 5 Hole Equalizer Plate Assembly

ROHN 25G 45G 55G 65G Tower Concrete Guy Anchor Rod with 5 Hole Down Guy Equalizer Plate Assembly R-GAC305
Price$97.95
Manufacturer Code: GAC305
Average Rating: 5
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ROHN Tower GAC3455TOP Concrete Down Guy Anchor with 5 Hole Equalizer Plate

ROHN GAC3455TOP Concrete Tower Down Guy Anchor
Price$149.95
Manufacturer Code: GAC3455TOP
Average Rating: 5
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ROHN Tower GAC5655TOP Concrete Down Guy Anchor with 5 Hole Equalizer Plate

ROHN GAC5655TOP Concrete Tower Down Guy Anchor
Price$339.95
Manufacturer Code: GAC5655TOP
Average Rating: 5
Availability: Usually ships in 24 Hrs
Stock Level: 3
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ROHN Tower GAC5755TOP Concrete Down Guy Anchor with 5 Hole Equalizer Plate

ROHN GAC5755TOP Concrete Tower Down Guy Anchor
Price$795.00
Manufacturer Code: GAC5755TOP
Average Rating: 5
Availability: Direct Ship From Rohn
4 to 6 weeks
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Anchors

Guy Wire Anchors

Shear Force
Figure 1: Shear Force

Guy Anchors are used to attach the guy-wire that helps support a tower, antenna mast or even utility poles. The anchoring is accomplished by using rods, usually  made from galvanized steel, that are screw driven, concreted into the ground or backfilled with earth.

An  anchor must be designed and rated to resist the maximum amount of tensile  load, forces tending to cause extension of the guy wires and anchoring system; both the dead load of the tension of the wire and the maximum possible theroretical live load due to wind,  gravity, ice and other forces of nature. The attached guy wires exercises its force at an angle, and because of this angle the anchor will  have resist two forces of both, vertical or (up and down) and lateral (back and forth) forces on it known as lateral shear. Ground anchors rely on the lateral shear  strength of the soil. This strength or cohesion helps to mitigate by spreading the the forces from the guys wires connected  to it over a large surface area.

 

Cohesion is a measure of the forces that cement particles of soils. For  example dry sand has very little cohesion where as stiff clay has a lot.  Choosing the right anchors is just as important as choosing the location and  type of soil they will be used in.

Methods of Anchoring

Dead Man Anchoring

This method employs a large excavated area that is made into  the ground along with a perpendicular bore that the anchor rod is placed into.  The excavated area is usually reinforced with rebar. A diagonal rod with an  eyelet extending in the guy direction is inserted into the bored hole and the  rod, the bored hole and the excavated area are then filled with concrete. This creates  a large surface area that the guy wires can attached to. In the past a  dead man anchor was made by burring a log horizontally in a trench with the guy  attached perpendicularly to its center. This is the most common method used for  larger guyed towers.

Screw Anchoring

Diagram of a tower guy anchoring system
Diagram of a tower guy anchoring system

Using a rod that is  designed with a wide screw on the end of it and an eyelet on the other for the  guys to attach like the EZ 30 or EZ 48. It is screwed deep into the ground, at the  same angle as the guy, by a truck-mounted drill machine. These are commonly  used as guy anchors for utility poles since they are quick to install with a  truck mounted hydraulic powered auger drive.

Grouted Anchoring

Grouted Anchoring is used in rocks and in rocky soils. In this method, first a hole is drilled at the angle of the guy. Then a steel anchor rod with an eye is inserted, the hole and a large area around the perimeter of the hole are then filled with a special type of grout. The grout is made by mixing concrete and a structual expansion additive. This additve is a specially formulated structural epoxy. When the grout sets it expands into the surounding rocky and porus soil which secures the anchor.