Isakhiwo sesakhiwo sensimbi siwuhlobo olusha lwesakhiwo, esakhiwe ngezinto ezihlukene zensimbi.njengekholomu yensimbi nogongolo, uhlelo lokubopha, uhlelo lokuhlanganisa, njll.Ingasetshenziswa kabanzi esakhiweni sensimbi, ibhilidi lehhovisi le-prefab, ukwakhiwa kwebhuloho, izikhumulo zezindiza nokunye.