Qetellong ea lekholo la lilemo la ho qetela radically fetola tsela eo le ho molao oa tsamaiso ya boemong ba tlase ho lefatshe. Ka mantsoe a mang, ho e fetohile molao-motheo oa ho bōptjoa ha tsamaiso ea drainage bakeng libakeng indasteri le ea teropong. Theknolojing thepa se felloe ke nako - ceramic le liphaephe asbestos samente, masale a entsoe ka matlafatsoa ka konkreiti - bōptjoa mefokolo e itseng ka lebaka la boima ba 'mele o moholo' me boholo ba eona e khōlō. Ka hona, libakeng tse nyenyane tsa dikahare le bulehileng liforo tse nyenyane, 'me ka hona impassable seretse le slush ka horticulture le metsaneng fetohile-anela.
The boemo bo phahameng ba metsi fatše hammoho le leqhoa tse tebileng tsa mobu ho e mong ho e mong le limithara tse halofo fella ka lifate motso bola, litsela buckling itseng timetsong motheo matlo a naheng mme meaho bakeng sa merero e fapa-fapaneng. lebaka le ka sehloohong e ne e le hore ba matlafatsoa masale a konkreite ha nka sebaka se seholo, hloka boiteko bo eketsehileng e le hore ho ba fa botsitso ea tlhomamiso. Kajeno, morao-rao drainage hantle e etsoa sebedisa theknoloji e morao-rao le thepa ea mohaho, e leng ho ka fokotsa boima ba 'mele le ho fokotsa ho rarahana ha mesebetsi tlhomamiso.
Ho ea ka morero oa ' liliba drainage li arotsoe ka mefuta e' maloa.
Filtara kapa absorption, drainage hantle e sebelisoa ka tabeng ea khoneha ya a khaotsa ho tsuba ba metsi feteletseng ka monya metsi kapa sebaka sa depressions oa liphallelo. Molao-motheo oa lona ho sebetsa e bonolo. Filtara metsi o tlang e etsoa ke litene robehileng, slag kapa lejoe sithabetseng tse ka tlase ea hantle. Absorption liliba tse ngata loketseng ho libaka le loam kapa ba mobu o lehlabathe, moo palo ea metsi litšila ha sa feteng 1 mitha dikubita ka letsatsi.
Keneleng metsi drainage hantle e lokisetsa ka nyeoe eo moo kaho ea khetho absorption ha khoneha ka lebaka la boemo bo phahameng tlase ho lefatshe. Kapa ha mobu sebakeng seo le ke keng la fana ka ho hlokahala metsi a hanyetsa. Metsi ho tloha tanka ena e ba ntsoa sebakeng sena pompo, 'me e ka sebelisoa bakeng sa nosetsang serapeng, kapa e le feela hlakolwa karolo ea tšimo.
Swivel drainage hantle nolofalletsa ho kenya tshebetsong ya thuno liphaephe drainage. Ka tloaelo ho, mofuta ona wa likoting e behiloeng ka ka linako tsohle liphaephe bobeli sekhutlo kapa beha monoana bona (bakeng sa ho hlahloba, ho hloekisa). Ka morero oa ho unit trust likarolo joalo sebediswa drainage hantle ho ba le bophara ea 315 kapa 425 limilimithara. Haha drainage hantle le matsoho a hao ha e thata haholo, haholo-holo hobane indasteri ea kajeno e fana ka merero tse khanya ka boima ba 'mele. Ho feta moo, bakeng sa tlhomamiso lona sebakeng e sa hlokahala tshebediso ya ho phahamisa thepa.
Morao-rao hantle a tsoelang e entsoe ka fiberglass kapa likarolo tsa polasetiki, bophelo tšebeletso ke hoo e batlang e se nang moeli. Leha ho le joalo, ho ke ke hangata ha ho khoneha ho ea kopana le monya metsi, bakeng sa tlhahisong ea e sebelisang lintho tse bonahalang ea setso - konkreite.