He aha i huaina ai ko te portal crane?

He aha i huaina ai ko te Portal Crane?
A kereini tomokanga, e mōhiotia ana ko te kereini gantry, he momo kereini e tohuhia ana e tōna hanganga ahurei, arā, he piriti e tautokona ana e ngā waewae e rua, neke atu rānei. Mā tēnei hoahoa ka taea e te kereini te neke i runga i tētahi huinga ara, ka tino whai hua mō ngā mahi hiki me te kawe, inā koa i roto i ngā tautuhinga ahumahi me te hanga. Engari he aha i kiia ai he "kereini tomokanga"?

Ko te kupu "kūaha" e pā ana ki te āhua o te whare o te kerēne ki tētahi kūaha, ki tētahi tomokanga rānei. Ka hangaia e te hanganga he anga rite ki te kūaha e horapa ana i tētahi wāhi kua tohua, e āhei ai te hiki me te neke i ngā kawenga taumaha puta noa i tētahi wāhi whānui. He tino painga tēnei hoahoa i roto i ngā taiao pēnei i ngā wāhi hanga kaipuke, ngā whare putunga, me ngā papa hangahanga, e tika ana kia kawe pai i ngā rauemi nunui.

Ehara i te mea he mahi anake te hoahoa o te kerēni tomokanga engari he tohu anō hoki. Ko te taha "kuaha" e tohu ana i te kaha o te kerēni ki te waihanga i tētahi wāhi whakatuwheratanga, i tētahi wāhi urunga rānei mō ngā mīhini taumaha me ngā rauemi, e whakahaere ana i te nekehanga o ngā taonga mai i tētahi wāhi ki tētahi atu. He mea nui rawa tēnei i ngā wāhi he iti noa te wāhi, ā, he mea nui te ngāwari ki te neke.

Heoi anō, e whakaatu ana te kupu "kuaha" i te kaha o te kerēni ki te mahi i roto i te papa rua-ahu, e neke whakapae ana i runga i ngā ara me te hiki poutū hoki. Nā tēnei mahi rua e tino hiahiatia ai ngā kerēni kuaha i roto i ngā momo ahumahi, tae atu ki te kaipuke, te hanga, me te hanga.