Ko te umanga potae ki te auahatanga hangarau hei kaha taraiwa, mā roto i ngā huringa hangarau e rua o te potae whakarara me te meridian, kua kawea mai te potae hau ki roto i te wā whanaketanga roa, matomato, haumaru me te mohio. Ko ngā potae maero teitei, ko ngā potae mahi-teitei kua riro hei whiringa matua o ngā potae kawenga me ngā potae pāhihi, he whānuitia te whakamahinga o ngā potae haumaru me ngā potae atamai i roto i ngā motuka papai teitei; He whānuitia te whakamahinga o ngā potae totoka i roto i ngā waka ahumahi, ngā waka hōia, ngā mīhini hanga, ngā waka tereina tauranga me te taunga rererangi me ētahi atu mara i raro i ngā āhuatanga uaua pēnei i te tere iti me te kawenga teitei; Ka whakawhānui haerehia ngā ara rapa ki te whakakotahi i ngā kaikokoti, ngā kaipara hurihuri, ngā tarakihana, me ētahi atu. Ko ngā mīhini ahuwhenua momo-ngokingoki me ngā mīhini hanga momo-ngokingoki i runga i ngā keri, ngā uta, ngā bulldozer, me ētahi atu.

Ngā āhuatanga o te ahumahi

Teara rapaKo te mākete he mea tito mai i te mākete tautoko wheketere mīhini katoa me te mākete whakakapinga hea. I roto i ēnei, ko te mākete tautoko e whakawhirinaki ana ki te putanga o ngā mīhini ngokingoki, ā, he tata te huringa o te huringa ki te huringa whanaketanga o ngā mara tono o raro, he iti ake te huringa o ngā mīhini ahuwhenua, ā, he kaha te huringa o ngā mīhini hanga nā te mea he tata te hononga ki te haumi hanganga me te haumi whenua. Ko te mākete whakakapinga e whakawhirinaki ana ki te mana omīhini ngokingoki, ā, nā te pikinga ake o te rahinga o te mana mīhini me te whakatairanga me te whakamahi i ngā tikanga mahi, kua piki ake te hiahia mō ngā hua ara rapa. I te nuinga o te wā, kāore he āhuatanga huringa mārama o te umanga potae rapa.

Ngā āhuatanga o te wāara rapaKo te nuinga o ngā ahumahi e pā ana ki te ā-wā o te umanga mīhini o raro. Kāore he ā-wā mārama o ngā mīhini hanga, engari ko ngā mīhini ahuwhenua e whakaatu ana i tētahi huringa ā-wā me ngā wāhanga rui me te hauhake o ngā hua. I te mākete o roto, ko te hauwhā tuarua me te hauwhā tuatoru o ia tau ngā wā tino hokohoko mō ngā ara mīhini ahuwhenua. I te mākete o Āhia ki te Tonga-mā-rāwhiti, ko te hauwhā tuatahi me te hauwhā tuawhā o ia tau ngā wā tino hokohoko mō ngā ara mīhini ahuwhenua. I te nuinga, kāore te mākete o te ao mō ngā tono o raro i te rite tonu te ā-wā, nō reira kāore i te mārama te ā-wā o te umanga ara rapa.