Zenziwe ngeglasi yelayisi yesoda ekumgangatho ophezulu, ezi tyhubhu zinika ukuqina kunye nokugqitywa okugudileyo, okunomtsalane okumelana nokufiphala kunye nokuguquka ngokuhamba kwexesha. Uyilo lwazo olucocekileyo nolulula luzenza zilungele iintlobo ngeentlobo zezicelo zobuchule nezisebenzayo.
Le tube inganqunyulwa yenziwe ibe ziiglasi, nto leyo enika ukuguquguquka kokusetyenziswa kwiiprojekthi ezahlukeneyo. Iibhile eziphumayo zingasetyenziselwa ukwenza ubucwebe, njengezacholo kunye neentsimbi zomqala, okanye njengezinto zokuhombisa iimpahla. Iibhile zihlelwa ngobukhulu kunye nombala ukuze kube lula ukuziphatha, nto leyo enceda ekwenzeni lula inkqubo yobugcisa. Nokuba zezokudala izipho, iimpahla zokuphucula, okanye ezinye iiprojekthi zobugcisa, ezi bhile zeglasi yelayisi yesoda ziyindlela ethembekileyo ehambelana neemfuno ezahlukeneyo zoyilo.