Kuti tiyike chikepe m'nyumba, timagwiritsa ntchito zida za aluminiyamu popangira shaft ndi kanyumba ka elevator.Danga limagwiritsidwa ntchito popanga mapangidwe abwinoko, makamaka kanyumba kakang'ono kakang'ono.Nthawi yomweyo, zida za aluminiyamu zimatha kuwonetsa kunja kwabwinoko.Kuwonetsa ulemu wa thndi mwini.