Icyuma Cyuma Cyuma Cyuma Cyubaka
Ibisobanuro bigufi:
I beam igice cyicyuma gifite imbaraga zingana nuburemere, ibyiza byo kugonda ubukonje no gusudira mumazu maremare, ibiraro nizindi nyubako zicyuma, ibipimo byambukiranya ibice, kugenzura ubuziranenge bwubutaka nibyiza, bikoreshwa cyane mubikorwa byinshi byo gukora ibinyabiziga , kubaka ibiraro binini, gukora imashini, n’inganda zindi.