Which SSPC specification provides guidelines for measuring Dry Film Thickness?

The correct answer is associated with SSPC-PA 2, which is the standard that specifically addresses the measurement of dry film thickness (DFT) of paint coatings. This specification defines the procedures for determining the DFT of coatings applied to various substrates, ensuring that the coatings meet the specified thickness requirements for performance and protection.

Understanding the importance of DFT measurement is critical in the coating industry, as it directly affects the durability and protective capabilities of the paint. Adequate thickness is essential to ensure that the coating can withstand environmental conditions and provide the intended protection from corrosion and wear.

In contrast, the other specifications listed focus on different aspects of surface preparation and quality assurance. SSPC-SP 1 covers solvent cleaning, SSPC-SP 2 deals with hand tool cleaning, and SSPC QP-1 outlines the procedures for evaluating a contractor's capability to perform surface preparation and coating services. While these are important to the coating process, they do not provide guidelines for measuring dry film thickness, which is why they are not the correct answer.