2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/70714We characterize and classify the "regular classes of heaps" introduced by the author using ideas of Fan and of Stembridge. The irreducible objects fall into five infinite families with one exceptional case.28 pages AMSTeX, 3 figuresCombinatoricsRings and Algebras06A11text