How exposure determines the steel and corrosion protection of an anchor, how zinc coatings and stainless steels resist corrosion, and the local corrosion mechanisms that can weaken a fastening without visible warning.
How sustained loads cause creep of bonded anchors, how repeated loads cause fatigue, and how EN 1992-4 and the European Technical Assessment (ETA) account for both.
How fire heats the anchor, fixture and concrete, which failure modes govern under fire exposure, and how EN 1992-4 and the European Technical Assessment (ETA) give fire resistances.