Te mātāpono whāriki kotahi-ara
He peera kotahi-arahe momo peera e hurihuri noa ana i tētahi taha, ka maukati ki tētahi taha. He maha ngā roera, ngā roera ngira, ngā pōro rānei kei roto i te whare whakarewa o tētahi peera kotahi-ara, ā, ko te āhua o te nohoanga hurihuri (kōhao) ka huri noa i te taha kotahi, ā, ka nui te ātete e puta ana i tētahi taha (te mea e kiia nei ko te "ara kotahi").
Ko te kaupapa mahi o ngā peera kotahi-ara
1. Te hoahoa o te arawhata me te roera
Ko ngā mamau ara kotahi momo arawhata me te roera he mowhiti o waho me te diameter o roto o te oko, he mowhiti o roto me te arawhata, me te huinga roera e pāngia ana e ngā kaha puna, ā, e piri tonu ana ki ngā mowhiti o roto me waho. Mēnā he pānga te hurihanga o tētahi ara reihi ki tētahi atu, mā tēnei whakaritenga ka whakarite kia tere ake te tere me te kaha ki te taraiwa tonu.
He pai te whakamahinga o tēnei momo mamau ara-kotahi mō te ekenga waka, te tautuhi me te kore whakamuri i roto i ngā taiao rerekē.
Ina whakamahia hei mamau kotahi-ara tino pai
Ka tāutahia te mamau ara-kotahi o te roera momo-ara-pikitia pēnei, arā, ka whakamahia te mowhiti o waho hei mema whakahuri. He mea tino nui tēnei mō te hopu tere. Mēnā ka hopukina te mowhiti o roto, ka whakawhāitihia te tere o te hopu e te kaha whakatere e pā ana ki ngā roera.
Ina whakamahia hei mamau kotahi-ara kore-whakamuri
Ko te mamau ara-kotahi momo rōra piki me te hurihanga mowhiti o roto anake e tika ana mō ngā tere iti. Mena e hiahiatia ana he tere teitei ake, ka tūtohuhia he mamau ara-kotahi momo poro.
Ina whakamahia hei mamau ara-kotahi tohu
He maha ngā wā ka kitea te mowhiti o waho hei huānga e piu ana, ā, he maha ngā wā ka kitea te mowhiti o roto hei huānga pononga. Ki te kore, ka arahi ngā hapa ki te kore e nekeneke o ngā roera me ngā puna, inā koa i te auau teitei o te tātaitanga. Mā te whakamahinga o te hinu whakahinuhinu kua whakaranua me ngā puna kaha ka puta he tika tere teitei o te tātaitanga me te kounga teitei.
2. Hoahoa poro
Ko tēnei mamau whakahurihuri kotahi-ara momo-werewere he mea hanga i te nuinga o te wā ki tētahi mowhiti o roto, ki tētahi mowhiti o waho, ki tētahi rōpū werewere, ki tētahi whare werewere, ki tētahi puna kaha me tētahi whāriki. Ka werewerehia te werewere i waenganui i ngā mowhiti o roto me o waho hei whakawhiti i te mana mai i tētahi ara reihi ki tētahi atu. E rua ngā diameter whakarara o te werewere, (arā, ko te tawhiti mai i tētahi kokonga o te werewere ki tētahi atu) ā, he nui ake tētahi o rāua i tētahi atu. Ka puta te mahi werewere ina huri ngā mowhiti o roto me o waho tetahi ki tetahi, ka akiaki i te werewere kia nui ake te tūnga poutū i runga i tētahi wāhanga whakawhiti nui.
3. Ko te pānga o te poro porotaka-whaiaro e whakawhirinaki ana ki te porotaka me te koki raka-whaiaro o te porotaka i waenga i ngā mowhiti o roto me waho. Ko te ariā taketake o te mamau porotaka kotahi-ara e hiahia ana kia hono te tauwehenga o te waku o te porotaka ki te taipana ohorere i hangaia e te mowhiti o roto i te ahunga o te taraiwa, ā, me nui ake tēnei uara waku i te uara pātata o te koki raka-whaiaro. Mena he kore haumaru ngā āhuatanga, kāore te porotaka e puta.
Ko te koki raka-ā-unoa ka whakatauhia e te hanganga o te poro, ā, ko ngā pūwāhi o ngā mowhiti o roto, o waho hoki e honoa ana ki te poro.
He tino iti te koki raka-ā-roto o te hoahoa o te porowhita kia tino piri ai i te tīmatanga. I te pikinga o te taipana, ka puta he kaha porowhita ki runga i te porowhita e whakahuri ana i te ara rere porowhita, ka huri te porowhita ki tētahi tūranga hou. He maha ngā wā ka hangaia te porowhita kia whai koki raka-ā-roto ka taea te whakanui haere, pērā i te haere mai i te tūranga whakahuri ki te tūranga kei reira te kawenga mōrahi e pikau ana. Ko te koki raka-ā-roto nui ka whakaiti i te kaha porowhita e hangaia ana e te porowhita, kia taea ai te tuku i ngā taipana nui mena e hiahiatia ana ngā rohe whakaroa me te pakeke o Brinell.
Ko ngā whakamahinga matua o ngā peera kotahi-ara: mīhini kakahu; mīhini tā; ahumahi motuka; taputapu whare; pūoko tinihanga.
Wā tuku: 20-Ākuhata-2025
