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Until a few years ago, water tanks were always drained before exterior surfaces were painted because surface moisture, if found below the water line, would lead to a coating failure. But a coating technology borrowed from the bridge and highway industry and put to a new use is bringing changes to the water tank marketplace. This presentation introduces the original project, includes the coating evaluation after 6 years, and concludes with additional tank examples.
Duplex systems, also known as painting over hot dip galvanized steel, are extremely effective corrosion protection systems. However, careful surface preparation techniques need to be used to alleviate potential coating failures. The age and characteristics of the galvanized coating should be used to determine what type of surface preparation is needed.
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State Departments of Transportation let contracts for cleaning and application of protective coatings for steel bridge structures, but often lack staff with the training and knowledge to properly address technical issues that may arise on the project. The department’s engineering and inspection staff may be very skilled at administering a wide variety of construction contracts but lack the experience necessary to deal with the unique issues that often arise on painting projects.
Painting Contractors generate more business and provide exceptional customer service by training themselves and the people who work for them to employ some easy to implement performance standards that get outstanding results.