Ko te utu o te kereini papa waipēhi 2 tana he momo taputapu hiki māmā i hangaia mō ngā wāhi iti me ngā hiahia whakahaere ngāwari. He mea nui te mahi a ēnei kereini papa iti i roto i ngā taiao pēnei i ngā awheawhe, ngā whare putunga, ngā wheketere, tae atu ki ngā whakahoutanga whare nā te mea he iti te rahi, he watea te nekeneke, me te kaha hiki pai. Ko te nuinga o te wā ka whakakahangia e ngā pūnaha hiko, hau rānei, he hanganga iti ēnei kereini, he ngāwari ki te tāuta, ā, ka taea te urutau wawe ki ngā taiao mahi me ngā whakaritenga hiki.

Ko te kaha kawenga o ngā kerēne toa papa i te nuinga o te wā kei waenga i te 200 me te 300 kg. E aro nui ana tēnei hoahoa ki te whai wāhitanga me te haumaru. Ka taea e te teitei mahi te eke ki te 2.7 mita te roa, ā, he pai mō te nuinga o ngā mahi hiki i roto i te whare, pērā i te whakahaere rauemi, te tāutanga taputapu, me ngā mahi tiaki. He mea nui kia mōhiotia, i te pikinga, i te toronga rānei o te pū, ka heke te kaha kawenga whai hua. Nō reira, he mea nui kia piri ki ngā here kawenga kua tūtohutia e te kaihanga i te wā e whakamahia ana hei whakarite i te haumaru.

Kāore i te tūtohutia kia neke atu i te kawenga o te 500 kg hei ārai i ngā aituā. Mō ngā mahi e hiahia ana ki ngā kaha kawenga teitei ake, pērā i te hiki i te 1 tana, i te 2 tana rānei, kāore pea e pai te kerēni toa papa. I roto i ēnei āhuatanga, he pai ake te kerēni gantry, ētahi atu taputapu hiki nui rānei. He pai ake ngā kerēni gantry, me ō rātou tautoko hanganga kaha ake me te kaha kawenga teitei ake, mō ngā awheawhe nui, ngā tauranga, me ētahi atu wāhi e hiahia ana ki te hiki taumaha.

Raraunga Hangarau