Pabwalo la njerwa zamadzi, malo obiriwira ovinidwa, kufunikira kwachilengedwe, kuphatikiza njira zachilengedwe ndi njira zopangira. M'mizinda ikuluikulu ndi yapakati, malo ambiri obiriwira, misewu yamapaki, ndi ntchito zogona ayamba kutsatira malingaliro omanga a mizinda ya siponji. Mzinda wotchedwa siponji ndi kupereka masewera athunthu kusonkhanitsa mvula ndi malo akale, kulowetsedwa kwa madzi amvula ndi malo achilengedwe apansi ndi chilengedwe, ndi kuyeretsedwa kwachilengedwe kwa madzi ndi zomera, nthaka, madambo, ndi zina zotero, kupanga mzindawo ngati siponji, wokhoza kuyamwa ndi kumasula madzi amvula ndi kusintha kwachilengedwe, kusintha kwachilengedwe ndi kusintha kwa chilengedwe. Pakadali pano, pakuwonjezeka kwa ntchito zoteteza zachilengedwe komanso zachilengedwe, njerwa zomwe zimatha kulowa mkati nthawi zambiri zimapangidwa popanda kupanga pogwiritsa ntchito mizere yopangira njerwa yokhayokha.

Mizinda ya siponji sitingaimvetsetse bwino ngati kusonkhanitsa madzi amvula, kusungirako, ndi kuwagwiritsanso ntchito, komanso sikosungira madzi ndi kuletsa kusefukira kwa madzi kapena kupewa kutsekereza madzi. Pazonse, amatenga chitukuko chochepa kwambiri monga lingaliro lotsogolera, kutenga zachilengedwe zamadzi, chilengedwe chamadzi, chitetezo chamadzi, ndi madzi monga zolinga zanzeru, ndikukwaniritsa chitukuko chokhazikika kupyolera mwa kuphatikiza zomangamanga ndi zobiriwira. Poyerekeza ndi kusintha ndi kukonza pambuyo pake, kukonzekera ndi kumanga koyambirira komanso kukhazikitsidwa kwa kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe kake Ndikofunika kulimbikitsa mapangidwe apamwamba kumayambiriro kwa chitukuko ndi zomangamanga. Honcha ndi WOPEREKA ntchito zoweta amene amapereka kudula-m'mphepete mwanzeru zipangizo zonse basi permeable njerwa permeable, ndi permeable njerwa zopangidwa ndi zipangizo kampani akhala akugwiritsidwa ntchito pomanga chinkhupule permeable ntchito m'mabwalo akuluakulu alkali mzinda mumsewu China, monga Chisa Mbalame ndi East Chang'an Street. Timakhulupirira kuti lingaliro la "siponji" liyenera kuphatikizidwa muzochitika zonse za moyo wa ntchito yomanga. Makamaka popanga njerwa za siponji zomwe zimatha kulowa mkati, kutsutsana pakati pa kuchuluka kwa madzi othamanga ndi kukana kuvala ndi kukana kukanikiza kuyenera kugonjetsedwa kuti amange mzinda wa siponji wapamwamba kwambiri. Chifukwa njerwa zosawoneka bwino za siponji sizingangopangitsa kuti ntchito yomanga mizinda ya siponji ikhale yochepa, komanso imabweretsa mavuto akulu pakukonza kotsatira.