There are four types of anchors that are most commonly used with our towers, screw in "Auger" type anchors, hammer driven "duckbill" anchors, cast concrete anchors and expansion bolts (for use only in solid rock). What anchor should be used depends on the soil type that the anchors will be placed in. See the following table for our suggestions.

Soil Type Sand Loose Gravel Loam Clay Rocky Soil Gravely Soil Solid (Soft) Rock Solid (Hard) Rock

Recommended Anchor Buried in Concrete Buried in Concrete Auger Duckbill Duckbill Auger or Duckbill Large, Long Expansion Bolt Smaller Expansion Bolt

Alternatives None None Duckbill, Buried Concrete Auger, Buried Concrete Buried Concrete Buried Concrete Large Eye Bolt + Cement None