Igipfukisho c’umutwe w’ipan c’icuma kidashobora gusenyuka c’ibice bibiri -ni igikoresho co gufatanya ibintu gikomeye cane, gikomeye cane, gikozwe ku bikorwa bisaba cane. Nk'igikoresho co gupfuka "impumyi", gishirwaho cose kivuye ku ruhande rumwe rw'igikoresho, bikaba bituma kiba ikintu gikenewe cane ku makoraniro aho inyuma idashobora gushikwako. Ikintu kiyisobanura ni umutwe wayo munini kandi usongoye ufise igitambaro c’umubiri, kikaba gitanga ahantu henshi ho kwikorera. Iyi nzira igabanya umuzigo w’ibikoresho ku kibanza cagutse, ikingira ibikoresho vyoroshe canke bishobora gusenyuka kugira ngo ntivyononekare kandi igatuma habaho ubushobozi bwo guhangana n’ugukwega-no gusenyuka iyo binyiganyiga.
Iyi rivet yubatswe yose mu cuma kitagira ibara, mu bisanzwe ni Grade 304 ku mubiri kandi kenshi Grade 410 ikomeye cane ku mandrel. Ivyo vyose-bitagira ibara bitanga ubushobozi budasanzwe bwo guhangana n’ugusenyuka, bikaba bituma ari vyiza ku bidukikije bikomeye bishobora gushikirwa n’ubukonje, imiti, n’ibihe bikomeye cane, nk’ivyo mu kiyaga, mu gutunganya imiti, no mu bikorwa vy’ubwubatsi vyo hanze. Uburyo bwa "ibice bibiri-" canke "umurongo ufunze" ni bwo buhambaye mu bikorwa vyayo. Mu gihe co gushiramwo, igikoresho co gutera ivyatsi kirakwega igihimba c’icuma gikomeye, kigatuma umubiri w’ivyuma uhinduka ubugoyagoye maze ugakora igihimba c’inyuma gikomeye c’impumyi-. Ku nguvu zitegekanijwe imbere y’igihe, iyo mandrel iramenagurika, mugabo mu buryo butandukanye n’ibikoresho bisanzwe, uruti rwayo rusohotse rurakingirwa mu buryo bw’ubuhinga ubudasiba mu mubiri.
Ico gishushanyo c’uruzitiro rwugarijwe rwuzuye umutima wose w’uruzitiro, kigatuma haba urugingo rukomeye, rudashobora kunyiganyiga-rufise inkomezi zidasanzwe. Itanga agaciro kanini k’ugukemurwa n’ugukomera ugereranyije n’ibikoresho vyinshi vy’impumyi kandi irema ubucuti buzitiye, bufise gazi- n’amazi-bufatanye. Ivyo bituma ari co gikoresho co gufatanya ibintu bihambaye nk’ibikoresho vy’amashanyarazi, ibikoresho vy’umuyagankuba, imodoka zitwara abantu, n’ibikoresho vyo gutunganya ibifungurwa aho isuku n’ugukomera ari vyo bihambaye cane. Ugufatanya uburyo bwo gushiramwo uruhande rumwe rw’igiti c’impumyi n’inkomezi n’ubushobozi bwo guhangana n’ugusenyuka kw’icuma gikomeye kidashobora gusenyuka, iki giti gitanga umuti udasanzwe wo kurema amajosi akomeye, yizigirwa kandi amara igihe kirekire.
