I roto i te hanga o ngā oko tunu kai konumohe,He mea nui te tukanga pēhi raro (te "whakahou anō i te raro") hei hanga i ngā kohua me ngā paraharaha pakari, ātete-whakapiko, me te tohatoha wera pai rawa atu. Ko tētahi pātai noa mai i ngā kaihanga ko: He aha te taumaha (pēhanga) o te mīhini e hiahiatia ana mō te pēhi raro o ngā kohua konumohe kua totorohia? Ehara te whakautu i te tau kotahi, nā te mea e whakawhirinaki tika ana ki ngā āhuatanga matua e rua: te rahi me te tauira (hoahoa) o te pereti raro. Ka tūhuratia tēnei hononga e tēnei tuhinga, ā, ka whakaratohia he aratohu mō te whiriwhiri i ngā taputapu tika.
Te Mārama ki te Tukanga Pēhi i te Papa raro
Ko te pēhi raro he whakamahi i te pēhi waipēhi, i te pēhi mīhini rānei hei here pūmau i tētahi pereti motuhake, he matotoru ake (konumohe, kowiri tira rānei te nuinga) ki te turanga o te tinana kohua kua totorohia ki te konumohe. Mā tēnei ka hangaia he raro maha-paparanga, he mea whakakotahi. Me pēhi te mīhini i te nui o te pēhanga kia piri katoa ai te atanga me te kore e waiho he āputa hau, me te hanga hoki i tētahi tauira whānui wera e hiahiatia ana.
Kaupapa Matua 1: Tātaitanga Pēhanga e Hiahiatia ana
Ko te kaha pēhi e hiahiatia ana (i roto i ngā tana) he pānga matua o te Horahanga me te Pēhanga mō ia Horahanga Wāhanga.
- Tātai: Te Kaha e Hiahiatia ana (Tana) = Te Horahanga Pēhi (cm²) × Te Pēhanga Wāhanga (Tana/cm²)
- Horahanga Pēhi: Koinei te horahanga mata katoa o te pereti raro e hiahia ana kia herea, tata rite ki te π × (Radius o te raro o te kohua)².
- Pēhanga Waeine: Koinei te pēhanga motuhake e hiahiatia ana mō te hononga me te hanga whai hua. Mō te pēhi i te raro o te kohua konumohe, ko te tikanga kei waenga i te 2 ki te 4 tana/cm², i runga i te matotoru o te rauemi me te uaua o te tauira. Ko ngā tauira hohonu ake, uaua ake me nui ake te pēhanga waeine.
Tauira: Mō te kohua paerewa he 30cm te whānui (te radius o raro ~15cm), ko te horahanga pēhi he tata ki te 706 cm². Mā te whakamahi i te pēhanga kotahi o te 2.5 tana/cm²:
Te Kaha e Hiahiatia ana = 706 cm² × 2.5 tāne/cm² = 1765 tāne, tata ki te 1800 tāne rānei.
Nō reira, mō ngā rahi kohua noa o te whare (20cm-32cm te whānui), e whakamahia whānuitia ana ngā mīhini i waenga i te 1500 ki te 2500 tana.
Kaupapa Matua 2: Te Hononga ki te Tauira (Hoahoa) me te Rahi
- Rahi o te Pereti o raro:
- Hononga Tika: Ko te nui ake o te diameter o raro, ko te nui ake o te horahanga pēhi. E ai ki te tātai i runga ake nei, ka piki tika tēnei i te taumaha katoa e hiahiatia ana. He nui ake te kaha e hiahiatia ana mō te kohua 36cm i te kohua 20cm mō te tauira kotahi.
- Tauira (Hoahoa / “Tauira Putiputi”):
- Te Hōhonutanga me te Uauatanga o te Tauira: He maha ngā wā ka whakaatuhia he tauira tā (pēnei i ngā porowhita porowhita, i te whata honikoma rānei). Ehara i te mea mō te ataahua anake tēnei; ka whakahaere i te whānui o te wera me te whakapai ake i te whakawhiti wera. Ko ngā tauira hohonu, uaua rānei, me nui ake te pēhanga kia tino hanga te konganuku ki roto i te pokepokea ai (mate) me te kore he puna-muri, kia pai ai te āhua.
- Te Pānga me te Piritanga o te Mata: Ka whakaitihia te horahanga pā tata e te tauira uaua, engari ka nui ake te hiahia mō te hanga pēhanga teitei, tika. Ki te kore e ranea te pēhanga, ka hua ake he tauira kāore i te tino tautuhia, ā, ka ngoikore te hononga i ngā taha kua ara ake.
Te Mahi Ngātahi a te Tauira me te Rahi:
- Tērā pea ka taea te whakamahi i tētahi pereti raro nui me te tauira papaku, māmā hoki e tētahi mīhini kei te pito raro o te awhe taumaha mō tōna rahi.
- Mō tētahi pereti raro iti me te tauira hohonu, uaua hoki, me whakamahi pea he mīhini he nui ake te taumaha i te mea e whakaarohia ana mō tōna rahi hei whakatutuki i te tautuhi tauira tino tika.
- Ko te āhuatanga tino uaua ko te pereti raro nui me te tauira hohonu, uaua hoki, e hiahiatia ana he mīhini taumaha-teitei (he maha ngā wā 2500 tana, neke atu rānei) hei whakahaere i te wāhi nui me te uauatanga o te hanga.
Whakatau me ngā Taunakitanga
Ko te whiriwhiri i te mīhini pēhi raro tika he taurite i waenga i te rahi o te kohua me te hoahoa o te pereti raro. Hei tikanga matua:
- Mō ngā kohua/paraharaha iti ki te rahi (tae atu ki te 28cm) me ngā tauira paerewa, he rawaka te mīhini pēhi 1500-2000 tana.
- Mō ngā kohua nui ake, mō ngā kohua arumoni rānei (30cm me runga ake), mō tētahi kohua rānei he hohonu/uaua te tauira, e taunakihia ana he mīhini pēhi 2000-3000+ tana.
Tohutohu Whai Hua: Me kōrero tonu ki tō kaihanga pokepokea/pokepokea me tō kaiwhakarato mīhini. Hoatu ki a rātou te whānui tika, te matotoru o ngā rauemi, me te tauira, te tuhi rānei o te tauira o tō pereti raro. Ka taea e rātou te mahi i ngā tātaitanga tika me te taunaki i te taumaha mīhini tino pai, kia pai ai te hanga, kia kaha ai te hononga, me te hanganga pai o te raro i ngā wā katoa.
Te wā tuku: Hui-tanguru-05-2026
