Polymer kongiri sump matsime akafukidzwa nemabhuroko panguva dzakasiyana pakuviga mapaipi epasi pevhu kana pakuchinjana. Iyo yakanakira yakajairwa pombi yekuongorora uye dredging. Iyo resin kongiri inounganidza zvakanaka chikamu chakakosha cheiyo drainage system. Iyo haingoiti chete kudhirowa kweiyo drainage system, inounganidza tsvina, uye inochengetedza yakajairika kushanda kweiyo drainage system, asi zvakare inogona kushandiswa seyekuongorora zvakanaka kuita basa rakakosha mukuchengetedza kweiyo drainage system. Iyo yakapedzwa mvura yekuunganidza tsime ine hunhu hwehukuru chaihwo, huremu huremu uye simba rakakwirira, iro rinopfupisa zvakanyanya nguva yekuisa uye chikamu chakakosha cheiyo drainage system mukuvakwa kweprojekiti.