During any crime scene investigation, there is the collection of samples (evidence) that are subsequently analyzed in a forensic laboratory and used to help solve the crime. This process is very similar (albeit a lot less serious) when a coating fails prematurely. Samples of failing and non-failing coating are gathered as evidence, along with a …
A 1930s-era riveted steel tank with a capacity of 1.5 million gallons was one of the largest water tanks in the world at the time of its construction. A radial cone-design tank with a 6-foot-diameter riser and 20 legs, it is approximately 175 feet in height and 80 feet in diameter. The available painting history …
Investigating Failure: Elevated Water Tank Coating Warranty Repairs Read More »
Failure analysis of coatings and linings often involves systematic analysis and complex engineering logic. There are also many human factors involved. Each coating application involves at least three distinct parties often with different motives and opinions. These parties include the owner of the structure or facility that was painted, the contractor firm that prepared the …
Coating Failures/Disputes: Preparing for Litigation Read More »
In the September 2014 issue of Durability + Design, we described the laboratory test methods used to determine the water vapor permeance of coatings, as well as the importance of knowing the permeance of the interior and exterior coatings used on building walls. As seen in Durability & Design, January 2017 “Calculated Impact: Can WUFI …
How Many Times Can I Repaint the Exterior of My Building? Read More »
Rather than describe a failure that has already occurred, this article addresses key steps to follow when painting bolted connections in order to prevent failures from occurring by focusing on surface preparation and painting practices that have been used successfully on bolted bridge connections such as splice plates and gusset connections for new construction projects …
The wastewater industry poses some of the most significant corrosion protection challenges for industrial protective coatings. In this case study, coating failure in the form of peeling and delamination (on concrete) and blistering (on steel) was observed on the interior of a digester at a wastewater treatment facility after only five years of service. Removal …
Contradictory Information in a Project Specification – F-Files: Mechanisms of Failure Read More »
This is a six-part video series that demonstrates the field and laboratory methods that were used to determine why a new coating system applied to a previously painted concrete floor had failed. Each part is standalone, addressing a different aspect of the evaluation, but when viewed in order, they present a systematic step-by-step process for …
Coating Failure Analysis Series – Part 6 – Laboratory Forensic Analysis Read More »
Welcome to the KTA Coating Failure Analysis Video Learning Series! This is a six-part video series that demonstrates the field and laboratory methods that were used to determine why a new coating system applied to a previously painted concrete floor had failed. Each part is standalone, addressing a different aspect of the evaluation, but when viewed …
Coating Failure Analysis Learning Series – Part 5 – Field Microscopic Examination Read More »
Welcome to the KTA Coating Failure Analysis Video Learning Series! This is a six-part video series that demonstrates the field and laboratory methods that were used to determine why a new coating system applied to a previously painted concrete floor had failed. Each part is standalone, addressing a different aspect of the evaluation, but when viewed …
Coating Failure Analysis Learning Series – Part 3 – Tooke Gage Read More »
Welcome to the KTA Coating Failure Analysis Video Learning Series! This is a six-part video series that demonstrates the field and laboratory methods that were used to determine why a new coating system applied to a previously painted concrete floor had failed. Each part is standalone, addressing a different aspect of the evaluation, but when viewed …