Remediating a Tower Foundation in the Middle of the Ocean
foot
+
problem
A transmission tower on a tiny uninhabited island in the Bay of Fundy showed severe deterioration.
Corrosion had reduced the anchor cross section by over 50% and the grout pad supporting one leg had washed out causing the leg to drop, buckling the bracing on two faces of the structure.
The island nearly disappears at high tide, leaving no stable work area and routinely submerging the base in salt water. The tower was at risk of collapse, threatening power to remote communities.
solution
Varcon designed and supervised emergency repairs to stabilize the structure, then designed a plan for full refurbishment.
Footings were concrete encased and the structure modified to bring primary components above the high tide mark. Engineering and contractor teams worked in close coordination to ensure concrete delivery to the challenging location was successful. Varcon provided engineering design, on site quality control, and support throughout the project.
outcome
A potentially catastrophic failure and expensive service interruption were avoided.
The tower was fully stabilized, and rehabilitated with a 25+year service life. Follow up inspections have confirmed the performance of the repairs and ongoing monitoring will ensure continued performance in this uniquely challenging environment.
Customer Stories
trusted Coast to coast
"Varcon’s goals align with our vision here at Rogers, providing transparency, quality, and strategic plannings."
Industry
Telecommunication
"Varcon is a versatile and reliable firm making them a great
choice for both one-off tower inspections to very complex
tender management projects."
Industry
Telecommunication
“Varcon were able to inspect over 300 monopoles within 3 weeks and provide detailed reports. They provided excellent engineering solutions and outside of the box thinking.”
Industry
Telecommunication
"Varcon's top notch engineering team has been instrumental in the design and development of our product, ensuring the highest safety standards have not only been met, but also exceeded."
Industry
Telecommunication
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