Structure Evaluation Engineers, Inc.
(SEE) was retained to assess the existing condition
of Carbon and Kennite steel storage silos and provide recommendations for remedial work as
necessary to maintain them for the next two years.
The steel silos were
approximately 64 feet tall and 15 to 18 feet in diameter. They were constructed with pre-formed
plates and the adjacent plates were bolted together to form a tube. Each silo had eight
sections. Silos exhibited moderate to severe corrosion that was generally worse at the bolt lines.
The existing steel coating within the corroded areas was blistered and cracked. The ultrasonic
thickness testing revealed 25% thickness reduction. Additionally the silos exhibited buckled panels
at the top sections of the silos due to excessive negative pressures within the silos. Three
repairs options were provided in order to maintain for the next two
provided existing condition assessment, ultrasonic
thickness testing, and prepared a report that included our observations, testing,
conclusions, and repair