A cikin yankin gine-ginen kasa mai zurfi da injiniya geotechnical, sarrafa ruwan karkashin kasa da ake yi wa kaya shi ne muhimmiya don nasarar aikin. Systems na dewatering na vacuum sune muhimmiyar al'ada na kayan dewatering, wanda aka tsara don rage matakan ruwa da tsauri gidajen gine-gine. Systems waɗannan suna aiki ta hanyar ƙirƙirar vacuum wanda ya ja ruwa daga ƙasa, lallai don samun yanayin hakar da ƙarfin ɗaukar ruwa. Fasahar tana da amfani musamman a cikin ƙasusuwa masu ruwa inda hanyoyin dewatering na al'ada suka zama rashin inganci.