Ekwakhiweni kwendawo yokuhlala yomphakathi, ikhishi lengxenye enkulu, indlu yangasese ayibeki i-drain floor.Ezinye ziyizidingo zeyunithi yokwakha, kanti ezinye ziyimibono yabaklami.Izizathu zifingqiwe zibe zintathu:
(1) amanzi angaphansi akhipha iphunga ekamelweni;
(2) indawo ehlangene yokudonsa amanzi kanye nephansi kulula ukuvuza, okwandisa umsebenzi wokulungisa;
(3) Ukufakwa kombhobho waphansi kwandisa izindleko zephrojekthi.
Eqinisweni, indlela lelo khishi, indlu yangasese engawubeki ngayo umsele waphansi ayithandeki.Nakuba kubukeka sengathi ukudonsa phansi kuncane, kodwa indima yawo ebalulekile ku-People's Daily life ngeke ishaywe indiva.Ukuthi i-drain yaphansi yekhishi nendlu yangasese isethiwe noma cha kuyothinta ngqo ukuphila okunethezekile kwabantu, futhi ngezinye izikhathi kuphazamise ukuphila kwabantu okujwayelekile.