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| Height of Tower | ||
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The minimum height of the tower should equal: |  |
| 1.) | Base depth + | |
| 2.) | The number of arms multiplied by arm depth + | |
| 3.) | Space between the arms (load height + clearance) multiplied by number of spaces + | |
| 4.) | 12" minimum above top of last arm. | |
| **Recommended vertical clearance between arm and load is 6". | ||
| Cantilever Base Length | ||
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The cantilever base should be at least as long as the cantilever arms. | |
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In addition, a minimum height to depth ratio of 6 to 1 is recommended. For example an 18' tall tower would require at least a 3' long base. A 24' tower would require at least a 4' long base. | |
| Cantilever Tower and Base Anchorage | ||
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Each tower must be securely anchored to the concrete with 1 -3/4" wedge anchor. | |
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Each base must be securely anchored to the concrete with 2 -3/4" wedge anchors. | |
| 3/4" Wedge Anchors | ||
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Provide the required anchorage of towers and base to concrete. | |
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Require minimum embedment of 4 3/4". Be sure your concrete slab is thick enough to achieve minimum embedment. | |
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| Installation Notes | ||
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All holes in the base to tower connection must be used. | |
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All towers must be erected in a plumb condition on a concrete slab. | |
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Torque all 3/4" bolts to 250 ft-lbs. Torque all 3/4" wedge anchors to 150 ft-lbs. | |
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If provided, HR Installation guides or drawings supercede all installation instructions. (For example, different torques, different anchorage requirements, etc. may be specified in installation guides or drawings.) | |
