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WOLF BUILDING STANDARDS
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Guy anchors are one of the most critical elements in ropes course construction. They allow the forces to be transferred directly to the earth bypassing the pole or tree. A class two pole will break with surprisingly little force applied diagonally to the top (1,200 pounds). Placement, depth and the type of anchor used varies depending on soil conditions
and specific element. In many cases 2 anchors are recommended for a single pole. There are three main type of anchors readily available. Natural anchors may be appropriate in some cases. |
| 1. Bell or expansion anchors are generally recognized as the most secure. These anchors use a camming method to expand the base as the load increases. |
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| 2. Plate anchors use a square or round plate at the bottom to secure it underground. In sandy soil it is recommended that a reinforced concrete or slurry be added to meet minimum strength requirements. (diagram) |
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| 3. Screw anchors are only recommended for dense clay soil. These anchors have a limited holding strength because of the smaller surface area (4"-6" diameter). These must be properly installed by screwing them into the ground. |
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WOLF is not responsible for errors, omissions, or misunderstanding resulting from the above document. It is intended as a reference for qualified challenge course professionals and not for use as a instruction guide for amateur and unqualified ropes course builders. |
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