Importance of Anchors Determining Necessary Load Capacities Types of Anchors Determining Holding Capacity of Soil Types Choosing Anchors Overview Tower Anchoring

Anchors must be used to anchor the winch or griphoist when raising a tilt-up tower Anchors support both tilt-up guyed and freestanding guyed towers as the ground point of contact for the guy lines Importance of Anchors Anchor Side Anchor Back Anchor Side Anchor Gin Pole Anchor Front Anchor

Anchor Types Used in Small Wind Installations Arrowhead Auger Rock Penetrator

Arrowhead Anchors

Arrowhead Installation

Arrowhead Installation Equipment Needed

Arrowhead Anchor Installation Arrowhead is placed onto the reusable drive rod Hammer the arrowhead into the ground at a 45˚ angle Anchor should be driven into the ground until only a couple inches of the cable end remains

Setting the Arrowhead Anchor Once anchor is at correct depth, retrieve the drive rod Using the drive rod for leverage, pull on the anchor until you feel it give Anchor is now set and ready to be attached to guy lines Multiple arrowheads are typically installed per guy line anchor point to ensure non-failure

Auger Type Anchors

Auger Anchor Installation Begin spinning the auger at a 90˚ angle to the ground (straight down) After three or four rotations turn the auger and install at a 45˚ angle with the handle facing the tower location Rotate auger until less than 6 inches of the anchor handle is visible Use a lever and pull on anchor to ensure that it does not move

Penetrator Anchors

Penetrator Anchor Installation

Expanding Rock Anchors

Expanding Rock Anchor Installation Drill hole at 45˚ angle with handle facing towards tower Push anchor at least 12 inches into the rock As anchor is turned it expands into the sides of drilled holes Anchor can be cemented in if wanted

CHOOSING AN EARTH ANCHOR BASED ON SOIL TYPE

Class 0 – Hard Pan Soil – Rock! Class 1 – Dense Sand & Gravel Class 2 – Medium Sandy Gravel Class 3 – Loose Medium to Fine Sand Class 4 – Loose Fine Uncompacted Sand Soil Class Definitions

Choosing an Anchor Based on Soil Type Soil Probe Test Kit Soil Probe Wrench adaptor 600 lbs Torque Wrench ½ in to ¾ in socket adapter ¾ in socket Ratchet Wrench Anchor Soil Chart

Soil Probe Test Kit

Using the soil class chart

Guywire Attachment

Wire Clip Installation

Guywire Attachment Thimble

Ginpole (Raising/Lowering) Anchor Attachment

Raise Tower