Heoi anō, me ngā pūtu me ngā nati hei hono i te mata, me wero te mata o te mea mahi, ka nui ake te kukū o te ahotea i roto i te mea mahi, ā, ka taea hoki te kino i te wāhanga, inā koa i te wāhanga poka, he ngoikoretanga tēnei o te hononga tīwiri. Ā, ka kiia he nati.
Ka hangaia ngā pūtu me ngā nati kia rite ki ngā paerewa rerekē, ā, e tika ana mō ia umanga. He rerekē rawa ngā paerewa o ngā pūtu me ngā nati ahumahi mai i ngā pūtu koi, ngā mata wiri, ngā whatunga me ngā pūtu rakau, ā, he rerekē hoki ngā taumata e hangaia ana. E rua ngā momo taputapu ka taea te whakamahi mō ngā pūtu me ngā nati ahumahi. Ko ngā taputapu miro matotoru ka whakamahia ngā niho tino pai rawa atu i roto i ngā hononga me ngā taputapu pai: ka whakamahia anake mō ngā pūtu me ngā nati maitai kounga teitei, ā, ka taea te whakangawari i te raro o te taumata, ā, ka ngaro pea ēnei rara.
I ngā wā o mua, i hangaia ngā pūtu ahumahi i roto i te āhua o ngā pūtu hexagonal, i roto rānei i te āhua o ngā pūtu uwha, he tokotoko miro-katoa, he tokotoko taputapu-katoa rānei. He roa ōrite te matua tīwiri o te pūtu hexagonal i te taha o te tīwiri, ā, ka inehia te diameter o waho mai i te rara o waho. Ko tētahi momo pūtu me ngā nati ahumahi hou e kiia ana ko ngā tīwiri tūhono hexagonal. He hoahoa hou ake tōna i ngā tīwiri hexagonal. Kua kitea haeretia he wāhi whānui i roto i te ahumahi me ēnei rā i runga i te maha o ngā mīhini ahumahi, inā koa nā tōna hononga watea. Kei raro nei ka arotakehia e mātou ngā paerewa pūtu me ngā nati ahumahi e whakamahia whānuitia ana.
He rerekē ngā momo o ngā pūtu me ngā nati ahumahi, he mea hanga i te rino, te maitai me te kowiri tira. He iti te waro o ngā pūtu me ngā nati rino i hangaia i ngā momo 4.8 me te 5.6, he ngohengohe, he ngāwari hoki te whakakikorua, ā, he mea hoko noa i te āhua o te whakakikorua hiriwa kua pania ki te konukōre matao. Ko ngā pūtu maitai te momo pūtu ahumahi e whakamahia whānuitia ana, ā, e whakamahia ana i ngā momo e whai ake nei.
Ka whakamahia hoki ngā momo pūtu kowiri tira i roto i ngā ahumahi he iti iho te kaha kume i tō ngā pūtu maitai, arā, ko te kaha kume i roto i te ahumahi he rite ki te 700 N/m2, inā koa i roto i ngā ahumahi e pāngia ana e te hau waikura i raro i ngā āhuatanga makuku. E rua ngā momo mahi a ngā pūtu maitai, ko tētahi he momo 304, e kiia nei ko te A2, ā, ko tētahi he momo 316, e kiia nei ko te A4.
Wā tuku: Hakihea-23-2021
