Many hangars, shelters and silos used for storage of military weapons systems are several decades old and have started to show signs of aging and corrosion assisted damage of support structures such as steel pipe stays, roofs, support beams, joints, flashings, in addition to rooftops, they now require expensive repairs. On decades old structures, there is a lack of redundancy in design and construction of the support frames for safety such as cantilever portion of the hangar roof. There was a concern that if one pipe-stay fails in structural strength from cross sectional metal loss due to crevice and pitting corrosion, the adjacent stays would become potentially over loaded and may cause the roof to collapse. This paper addresses the issues, problems and solution related with such a hangar which had corroded to a point where one has to address sustainability and safety of the whole structure as a major issue from the effects of atmospheric corrosion damage.

Subject
Steel structures, Steel surfaces, Water, Materials, Piping, Joints, Repair, Roofs, Metals, Steel, Concrete, Paints, Types of corrosion
Keywords:
aircraft hangar, atmospheric corrosion, roof and pipe-stay corrosion, aging, structural repairs
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2017
Association for Materials Protection and Performance (AMPP)
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