: Minimum of 10 mm (thinner substrates require reinforcement using the "sandwich technique" per ISO 4624).
: Defines how many tests are required based on the size of the inspection area.
: Unlike some theoretical standards, this is specifically designed for on-site field testing on actual structures like bridges or offshore platforms, rather than just in a controlled laboratory.
: The standard is intended as a supplement to the ISO 12944 series, providing field-specific procedures that the broader series lacks.
To clarify: