Ukuchaneka kunye nokufaneleka kokufakela i-rim kuchaphazela ngqo ubomi benkonzo kunye nokhuseleko lobomi bamavili, ngakumbi xa kutshintshwa amathaya. Amavili anemibala eyahlukeneyo kunye neepateni anobukhulu obahlukeneyo kunye nomthamo womthwalo ngenxa yobukhulu obahlukeneyo bamathaya. Akufunekanga ixutywe ngaphandle kwesizathu. Ukongeza, ukuba asikwazi ngokupheleleyo ubuchule bobugcisa bokutshintsha amavili emoto yethu ngokwethu, kuyacetyiswa ukuba uye kwivenkile yokulungisa amatayara. Kungenjalo, isithuthi sinokutshintshwa silahlwe kwivenkile yokulungisa egunyazisiweyo. Ukuba uxinzelelo lwetayara ngaphakathi kwivili luphantsi kakhulu okanye luphezulu kakhulu, luya kuchaphazela ubomi benkonzo yevili. Ukuba uxinzelelo lwetayara luphantsi kakhulu, lukwayingozi kakhulu. Ukuba umkhombandlela we-radial ucinezelekile kwaye ukhubazekile, kwaye udonga lwamatayara luphazamisekile, ukunxiba kuya kwenzeka. Ukuphakamisa ubushushu bodonga lwangaphakathi lwevili kumgca othe ngqo kuya kubeka emngciphekweni umgangatho wevili.