1. I-L single main beam hook hoist i-gantry crane yakhiwe ikakhulukazi i-gantry, inkalankala, kanye nendlela yokuhamba ngetroli, ikhabhi kanye nohlelo lokulawula ugesi.
2. I-gantry iyisakhiwo sebhokisi.Inkalankala ithatha isondo lokuphendula mpo lapho umthwalo owuphakamisayo ungaphansi kwama-20t, kanye nesondo lokusabela elivundlile lapho lingaphezulu kwama-20t ukuze ligijime ohlangothini lwegida.
3. Ibhande liyi-single-girder bias track futhi umlenze unomumo ongu-L, ukuze indawo yokuphakamisa ibe nkulu futhi ikhono lokunweba libe namandla, okwenza kube lula ukudlulisa ama-athikili ukusuka ku-span kuya ngaphansi kwe-jib.
4.Ikhebhu evaliwe isetshenziselwa ukusebenza, lapho kukhona isihlalo esilungisekayo, umata wokuvikela phansi, ingilazi eqinile yefasitela, isicishamlilo, isiphephetha-moya sikagesi kanye nezinto ezisizayo ezifana ne-air conditioner, i-acoustic alarm kanye ne-interphone engakwazi ukufakwa njenge kudingwa abasebenzisi.