Both men were near the top of the tower when a corroded anchor broke in two. This was not an isolated incident of industry workers almost falling to their death following a guyed tower collapse due to corroded anchorage.ĭuring the 1990's, two climbers from an Orlando, Florida service company were dismantling a Rohn 25G structure from the roof of the City of West Palm Beach Police Department's communications division. The structure collapsed and the workers miraculously survived, but received serious injuries.
Two climbers then began to ascend the 350-foot tower when an anchor shaft supporting five guy wires separated where it entered the buried deadman concrete base, three feet below ground level. A three-man tower crew plumbed and tensioned the structure as part of their inspection program. The agency was prompted to provide the HIB after learning of a North Dakota tower collapse that was caused by an anchor failure. In 1991, OSHA issued a Hazard Information Bulletin addressing Communication Tower Guy Anchor Corrosion.
Guyed towers on the top of buildings are also at peril if their anchors have not been properly inspected and maintained. With approximately 25,000 guyed towers nationwide, many of the structures might be at risk of collapse. Corrosion of anchors above and below ground put many guyed structures at risk of collapseĭecemThere has been considerable focus upon the need to inspect guyed tower anchor systems below ground to ensure that their rods or channel iron are not corroding to the point of failure.
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