ukwakhiwa kwezakhiwo zensimbi kuyindlela ephumelelayo yokwakha isonto elisha le-prefab, noma ukunweba isakhiwo sesonto esikhona.Ziningi izinzuzo zokusebenzisa izakhiwo zensimbi ezakhiweni zesonto yingakho isiba indlela yokwakha edumile