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http://www.arrl.org/tis/info/pdf/0106091.pdf
Tower Tips • Towers have design load limitations. Make very sure the tower you consider has the capacity to safely handle the antenna(s) you intend to install in the kind of environment that is applicable to your location. • The antenna must be located in such a position that it cannot possibly tangle with power lines, both during normal operation or if the structure should fall. • Sufficient yard space must be available to position a guyed tower properly. A rule of thumb is that the guy anchors should be between 60% and 80% of the tower height in distance from the base of the tower. • Provisions must be made to keep children from climbing the support. • Soil conditions at the tower site should be investigated. The footings need to be designed around actual soil conditions, particularly on a rocky site. • Beware of used towers. Have them professionally inspected and contact the manufacturer for installation criteria. • Check with your local building officials.
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• Liability may be increased with a tower installation. Check with your insurer to ensure your coverage is adequate. • Make sure you have all the tools needed before starting. Some specialized tools (such as a gin pole) may be required. • The assembly crew as well as those climbing the tower during erection must wear hard hats and use appropriate personal protective equipment including gloves, boots, climbing belt or harness. Don't forget that lifelines are needed when the belt is unattached from the tower while moving. • Assign someone in the erection crew to monitor the use of safety equipment. • After the tower is installed, keep the installation safe. Inspection and maintenance recommended by the tower's manufacturer should be carefully followed. • If making attachments to houses or installations on roofs, have a qualified person determine that the method is adequate and the loading conditions are satisfactory. • Avoid metal ladders if there are any utility lines in the vicinity. Assume that any line is energized--including cable television and telephone lines.
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