Ko te taputapu matua mō te hanga whakahāngai he mīhini pēhi waipēhi. Ko te mahi a te mīhini pēhi waipēhi i roto i te tukanga pēhi he pēhi i te kirihou mā roto i te whakahāngai, he whakatuwhera i te whakahāngai, ā, he pana atu i te hua.
Ko te whakahāngai pēhi te mea e whakamahia nuitia ana mō te whakahāngai i ngā kirihou whakamahana. Mō ngā kirihou whakamahana, nā te mea me whakarite te mea para i mua, me whakamahana, me whakamatao hoki i ia wā, nō reira he roa te huringa whakaputa, he iti te whai huatanga o te whakaputa, ā, he nui te whakapaunga pūngao. Heoi anō, kāore e taea te pēhi i ngā hua he uaua ngā āhua me ngā rahi tika ake. Nō reira te ia whānui ki te whakahāngai werohanga he iti ake te utu.
Temīhini whakakoi pēhangaKo te mīhini pēhi (he whakarāpopototanga mō te pēhi) e whakamahia ana mō te hanga he mīhini pēhi waipēhi. Ko tōna kaha pēhi e whakaatuhia ana i roto i te taumaha ingoa, ko te tikanga, he 40t ﹑ 630t ﹑ 100t ﹑ 160t ﹑ 200t ﹑ 250t ﹑ 400t ﹑ 500t te raupapa mīhini pēhi. Neke atu i te 1,000 tana o ngā mīhini pēhi paparanga maha. Ko ngā ihirangi matua o ngā whakatakotoranga mīhini pēhi ko te taumaha whakahaere, te taumaha pana, te rahi pereti hei whakapiri i te mate, me ngā whiu o te piston whakahaere me te piston pana, me ētahi atu. Ko te tikanga, he taputapu whakamahana me te whakamatao ngā tauira o runga me raro o te mīhini pēhi. Ka taea e ngā wāhanga iti te whakamahi i te mīhini pēhi makariri (kāore he whakamahana, he wai whakamatao anake) hei hanga me te whakamatao. Whakamahia te mīhini pēhi whakamahana mō te kirihou wera anake, ka taea te penapena pūngao.
E ai ki te taumata o te aunoatanga, ka taea te wehewehe i ngā mīhini pēhi ki ngā mīhini pēhi ā-ringa, ngā mīhini pēhi ā-haurua-aunoa, me ngā mīhini pēhi tino-aunoa. E ai ki te maha o ngā paparanga o te pereti papatahi, ka taea te wehewehe ki ngā mīhini pēhi paparua-paparanga me ngā mīhini pēhi paparua-paparanga.
He mīhini pēhi waipēhi te mīhini pēhi e whakakahangia ana e te tuku waipēhi. I te pēhitanga, ka tāpirihia tuatahitia te kirihou ki te pokepokea tuwhera. Kātahi ka whāngaihia te hinu pēhi ki te rango mahi. Mā te pou e ārahi, ka neke te piston me te kurupae neke ki raro (ki runga rānei) hei kati i te pokepokea. Hei whakamutunga, ka tukuna te kaha i hangaia e te mīhini pēhi waipēhi ki te pokepokea, ā, ka pā ki te kirihou.
Ka rewa, ka ngawari te kirihou i roto i te pokepokea ai i raro i te wera. Ka whakakīia te pokepokea ai ki te pēhanga mai i te mīhini pēhi waipēhi, ā, ka puta he tauhohenga matū. Hei tuku i te makuku me ētahi atu mea whakakorikori i puta i te wā o te tauhohenga whakapūmau o ngā kirihou, me te whakarite i te kounga o te hua, me mahi te whakaiti i te pēhanga me te whakaputa. Whakanuia tonutia, me te pupuri tonu. I tēnei wā, ka haere tonu ngā tauhohenga matū o te kapia i roto i te kirihou. I muri i tētahi wā, ka hangaia he āhua totoka mārō kāore e rewa, kāore e taea te whakauru, ā, ka oti te hanga whakapūmau. Ka whakatuwheratia tonutia te pokepokea ai, ā, ka tangohia te hua i roto i te pokepokea ai. I muri i te horoinga o te pokepokea ai, ka taea te haere tonu i te wāhanga whakaputa e whai ake nei.
Ka kitea mai i te tukanga i runga ake nei ko te pāmahana, te pēhanga, me te wā he āhuatanga nui mō te whakapūtanga kōpeketanga. Hei whakapai ake i te hua o te mīhini me te haumaru me te pono o te mahi, ko te tere o te mahi o te mīhini he mea nui anō hoki e kore e taea te wareware. Nō reira, me taea e te mīhini pēhi waipēhi kirihou e whakamahia ana mō te pēhi te whakatutuki i ngā whakaritenga taketake e whai ake nei:
① Me rawaka te pēhanga pēhi, ā, me whakarite hoki, me tutuki, me pupuri hoki te pēhanga kua whakaritea i roto i tētahi wā.
② Ka taea e te kurupae neke o te mīhini perehi waipēhi te mutu me te hoki i tetahi wāhi o te whiu. He mea tino nui tēnei ina tāuta ana i ngā pokepokea, i te pēhi-mua, i te utu puranga, i te rahunga rānei.
③ Ka taea e te kurupae neke o te mīhini pēhi waipēhi te whakahaere i te tere me te pēhanga mahi i tētahi wāhi o te whiu. Hei whakatutuki i ngā whakaritenga o ngā pokepokea o ngā teitei rerekē.
Me tere ake te tere o te kurupae neke o te perehi waipēhi i te whiu kau i mua i te pa o te pokepokea tāne ki te kirihou, kia poto ai te huringa pēhi, kia pai ake ai te hua o te mīhini, kia kore ai hoki e whakaitihia, e whakapakeketia rānei te rere o te kirihou. Ina pa te pokepokea tāne ki te kirihou, me whakaroa te tere kati o te pokepokea. Ki te kore, ka pakaru pea te pokepokea, te mea whakauru rānei, ka horoia rānei te paura mai i te pokepokea uwha. I taua wā anō, mā te whakaroa i te tere ka taea hoki te tango katoa i te hau i roto i te pokepokea.
Wā tuku: Paenga-whāwhā-07-2023
