TeHongere-C Pirau Mahi Taumahae aro ana ki ēnei wero mā te whakakotahitanga o te hangarau tika me te pūtaiao rauemi matatau:
Ātete waikura teiteiNgā taumata whakapūmau matatau (he nui ake i te Z275, i te AZ150 rānei) ka tukuna e ēnei awa he paparanga konutea tiaki e ārai ana i te waikura mō ngā tau maha, e āhei ai te huringa ora 25 tau o ngā panera rā kia rite ki tana pūnaha whakairinga.
Te Painga "Poua me te Mokowā"Mā ngā mokowā tapahi-tika ka taea te huihui tere, te hono pūmau, me te kore e hiahiatia he whakarewa i te papa mahi. Ehara i te mea ka whakaiti noa i te utu mahi engari ka tiakina hoki te kounga o te paninga piauau ka pakaru i te wera o te whakarewa.
Te Pono o te HangangaTeKōtaha CKua hangaia kia tutuki ai ngā paerewa o te ao pēnei i te ASTM A653 me te EN 10346, ā, he teitei te ōwehenga kaha ki te taumaha, e taea ai te tāuta i ngā kōwae mata-rua taumaha i raro i ngā kawenga hukarere nui, hau nui rānei.