The first way to reduce leakage to ground, be taken into account is the foundation of the building above the groundwater level at any time of the year (preferably 0 . 5 – 1m) .
Njia ya kwanza ya kupunguza kuvuja kwa ardhi, kuchukuliwa katika akaunti ni msingi wa jengo juu ya usawa wa maji ya ardhini wakati wowote wa mwaka (ikiwezekana 0 . 5 – 1m) .