Hiki ke hāʻawi ʻia nā pahu holo kiʻekiʻe kiʻekiʻe ʻelua ma ka Papa A, B, C, D, a me E o ka CMAA, me nā mana maʻamau o 500 tons a hiki i 200 kapuaʻi a ʻoi aku paha. Ke hoʻolālā pololei ʻia, ʻo ka lua pahu alahaka ʻelua paha he hopena maikaʻi loa ia no nā ʻoihana e makemake ana i nā cranes kaumaha-a-medium-duty, a i ʻole nā mea hana me ka liʻiliʻi o ke poʻo a/a i ʻole ka papahele papahele. Hiki ke koho ʻia ka hoʻolālā ʻālua pālua no kahi crane kaumaha ma kahi hale hana, hale kūʻai, a i ʻole hale hui. ʻO kahi crane e koi ana i nā mana kiʻekiʻe, ākea ākea, a i ʻole nā kiʻekiʻe kiʻekiʻe e pōmaikaʻi mai ka hoʻolālā ʻelua-girder, akā hiki ke kūʻai ʻia i mua.
Pono maʻamau ka ʻae ʻoi aku o ka ʻae ʻoi aku ma luna o ke kiʻekiʻe kiʻekiʻe o nā pahu kululu, ʻoiai e hele ana nā kaʻa hāpai ma luna o nā kāʻei ma ka papa cranes. Hele nā kāʻei uwapo ma luna o nā ala crane i kau ʻia ma luna o ke ala holo crane. Nā kaʻa hoʻopau — ʻO ke kākoʻo ʻana i ke kāʻei uwapo e hiki ai iā ia ke holo i nā kaʻa crane, e hiki ai i ka crane ke hele i luna a iho i ke ala holo crane. Kākoʻo Alahaka - Nā kāʻei horizontal ma luna o kahi crane e kākoʻo ana i kahi kaʻa kaʻa a hāpai.
ʻO ke ʻano kumu o kahi crane kalaka ʻelua kalepa, ʻo ia nā kaʻa e holo ana ma nā ala e hoʻolōʻihi i ka lōʻihi o kahi ʻōnaehana track, a ʻo ke kaʻa kaʻa i hoʻopaʻa ʻia ma nā kaʻa hope, kahi e hoʻopaneʻe ai kahi kaʻa no ka hāpai ʻana i ka hāpai ʻana a hele i luna. he alahaka. Hoʻokomo ʻia nā pahu pahu uwapo pālua ʻelua me nā kaola alahaka ʻelua i hoʻopili ʻia i kahi alahele, hāʻawi maʻamau me nā hoists kaula uwea uila ma luna o ke poʻo, akā hiki ke hāʻawi ʻia pū me nā kaulahao kaula uila ma luna o ke poʻo ma muli o ke noi. Hiki iā SEVENCRANE Overhead Cranes a me nā Hoists ke hāʻawi i nā puʻu uwapo girder maʻalahi no ka hoʻohana maʻamau, a hāʻawi pū i nā puʻu uwapo ʻelua i hana ʻia no nā ʻoihana like ʻole. No ka mea hiki i nā wili ke noho i waena a i ʻole ma luna o nā kaola hele, loaʻa kahi kiʻekiʻe 18-36 o ke kiʻekiʻe swivel i ka wā e hoʻohana ai i kahi crane uwapo lua.