Iziphethu ziwukhiye wokuqinisekisa ukuthi umnyango wegaraji lakho uyavuleka futhi uvale kalula.Asebenza njengama-counterweights, njengoba enza emakhulwini eminyaka adlule lapho abantu bewasebenzisela iminyango yabo noma amamodeli anamuhla nawo enza kanjalo!Isibonelo, uma uhlangothi olulodwa lunesisindo esingamaphawundi ayi-100 kunolunye (noma iyiphi inombolo), khona-ke ngalezi zingxenye eziwusizo kuyohlale kukhona amandla aphikisayo alinganisa leso sisindo ukuze ungabi nenkinga yokuvula lawo mahinji njalo uma lina ngaphandle. .