Ubugari bw'uruziga ni intera iri hagati yintebe yipine izenguruka umuzenguruko (ntabwo intera iva kumpera yinyuma yiziga kugeza kuruhande).Ubugari bw'uruziga bwiyongera igice kugirango hasubizwe ubugari bw'ipine.Nyamara, icy'ingenzi cyibanze ku bugari bw'uruziga ni uko ari ubunini bukwiye bw'ipine igomba gushyirwaho.Buri ruganda rukora amapine rugenera urukurikirane rw'ubugari bwa buri rine;Ndetse no muri uru rwego, ubugari bwo kuzamuka bwa tine buratandukanye.

Nyuma yo kwishyiriraho, ubugari nyabwo bwipine bwiyongera hafi ya santimetero imwe mugihe mugihe gito kandi kigari kibyemerera.Ibyo ntibishobora kumvikana nkinshi, ariko birashobora kuba ingenzi muguhitamo amapine nibikoresho byiziga.Ipine yashyizwe kumurongo muto murirwo rwego irashobora guhuza ikinyabiziga, ariko ipine imwe yashyizwe kumurongo mugari ntishobora guhura.