Pansi pansi-kusunga bwino zachilengedweKuyika pansi kotetezedwa kwachilengedwe, komwe kumadziwikanso kuti konkriti wonyezimira, pamwamba pa phala la simenti lomwe limakutidwa ndi phala la simenti, zophatikizika ndi simenti zomangika wina ndi mnzake kuti apange pore yofanana.
Kusamalira zachilengedwe bwino za mtundu permeable chilengedwe chitetezo pansi, amatchedwanso "porous konkire", ndi pamwamba pa akaphatikiza coarse yokutidwa ndi wosanjikiza woonda wa simenti phala, akaphatikiza ndi simenti phala womangidwa kwa wina ndi mzake kupanga yunifolomu kugawa mabowo mu dongosolo zisa, kotero ali mpweya permeability, madzi permeability, mogwira mtima permenobility ndi kukweza madzi zinthu mopepuka komanso mopepuka. kuchotsa zoopsa za kuwononga chilengedwe monga mafuta opangira pansi. Ndi chinthu chabwino kwambiri chopangira kuti chisungidwe bwino ndi chilengedwe. Kuyika pansi kwamtundu kumagwiritsidwa ntchito pamapando, mabwalo a anthu, malo oimika magalimoto otseguka, misewu ya m'mapaki, misewu ya anthu oyenda pansi, misewu yanyumba ndi yapabwalo la anthu ndi zina zotero.
