Incazelo yesakhiwo: Idizayini yesikwele isetshenziswa kakhulu, imbobo yokukhipha i-diameter enkulu isheshisa ukugeleza kwamanzi. Insimbi engagqwali iyakwazi ukugqwala futhi imelana nokugqwala ukuze ibe namandla aphakeme nokuqina.

Qhubeka uhlanza: I-drain yaphansi ingagcina igumbi lomile futhi lingaqoqi amanzi. Ukunqamula kabili kuvikela ngempumelelo ukuvala. Ifanele indlu yokugezela, ikhishi, igalaji, nayo yonke indawo yomphakathi.

Ukufakwa kalula: Isivalo nesihlungi esikhiphekayo kulula ukusiphakamisa ukuze kufakwe nokuhlanza.