Cinis volatilis, ganga carbonis, pulvis lapidis, lapis, arena fluvialis, arena nigra, scoria, sordes constructionis, scoria residua, scoria lanae petrae, perlitum, schistus, scoria chalybis, scoria cupri, scoria alcalina, scoria fusa, scoria aquae, cinis humidus e statione electrica emissus, ceramsites, sordes lapidis, et alia sordes quae cemento solidificari possunt, adhiberi possunt (quantitas soli materiae rudis non excedat 5%). Genera laterum principalia sunt: later Batavus, later ordinarius, later porosus, later cavus, later cum nucleo, later coloratus, later permeabilis, later protectionis declivis, later marginis, later pavimentalis, later semitae, later fluvialis, later quadratus, later catenatus, later gramineus, later arboris anularis, later insulationis thermalis, later concretus, tabula insulationis spumae cementi, later non autoclavatus, etc.