Icyuma kiringaniye bivuga ibyuma bya mm 12-300 z'ubugari na mm 3-60 z'ubugari hamwe nu gice cy'urukiramende kandi impande zombi.Ibyuma bya tekinike birashobora kuba ibyuma birangiye, birashobora kandi gukoreshwa nkumuyoboro usudira ubusa kandi wanditseho urupapuro rworoshye.Umubyimba ni 8 ~ 50mm, ubugari ni 150-625mm, uburebure ni 5-15m, naho ibicuruzwa bisobanurwa ni byinshi, bishobora guhuza ibyo abakoresha bakeneye.Mu mwanya w'isahani yo hagati, irashobora gusudwa mu buryo butaziguye.