Kugirango wirinde icyuma gipima icyuma cyitwa manhole kitangirika mu nsi no kongera igihe cyumurimo wumuyoboro wumuyoboro, hejuru yinyuma yumutwe wa node ya podiyumu ya podiyumu igomba gutwikirizwa irangi rya asfalt, hanyuma igashyirwa mububiko. Kugirango turusheho kongera imbaraga zo kwangirika kwangirika kwicyuma cya manhole, ibyuma bya manhole bipfunyika abayikora bakeneye gutera zinc hejuru yinyuma yumuringoti wibyuma. Turashobora gukora uburyo butandukanye bwo kuvura ibyuma bya manhole.
Nka epoxy resin irangi, dip dip galvanizing nibindi kuri Cast Iron manhole itwikiriye ingese; Rimwe na rimwe hazabaho ingese mbere cyangwa mugihe cyo gukora ibyuma bitwikiriye ibyuma, ibyo bikaba byerekana ko isura yanduye cyane. Igifuniko cya manhole kigomba guhanagurwa no kurasa kugira ngo gikureho ingese, kandi hejuru igomba kugenzurwa mbere yo kuva mu ruganda.