Ruwan tsaye da aka gina (PVD)

Prefabricated Vertical Drain (PVD) fasaha ce ta tabbatar da ƙasa wacce take da mahimmanci a cikin injiniyan geotechnical na zamani, musamman ga ayyukan da ke da ƙasa mara ƙarfi, kafa mara ƙarfi, da yanayin ƙasa mara daidaituwa. Wannan dabara ta karkatarwa ta ƙasa ta saurin saurin haɗaɗɗa na ƙasa ta ƙunshi shigar da hanyoyin drainage na vertical zuwa cikin ƙasa mara kyau, wanda ke rage lokacin da ake buƙata don karkatar da ƙasa kuma ya bar ayyukan gine-gine su ci gaba a wuraren da suka gabata ba su dace ba. Ta hanyar ƙirƙirar hanyoyin drainage na moja daga strata ƙasa zuwa saman, na'urorin PVD suna ba da damar cire matsanancin matsanancin ruwa daga strata ƙasa masu ƙarfi kamar clay, silt, da mixed deposits. Wannan aikin mahimmanci ne don shirya ƙasan kafa inda karkatarwa na asali zai ɗauki watanni ko shekaru, wanda yake ya zama dabara ta muhimmiyar a cikin injiniyan kafa na zamani da shirya wurin.