Ngā rāhui whakangungu pōro i roto i tō mātau taonga kua hanga hei whakamahere mō ngā hua nui me ngā whenua ā-rākau katoa. Ngā rāhui whakangungu ā-ahuru (e kore e mōhiotia ana ki te huarahi roa) he whakamahi i ngā pū ahuru ā-matawhirihiri (tomo 28L), whakatakoto i te urunga i roto i ±15mm i raro i ngā hua e tuhi ana ki 40 ton, me te whakangungu kaweake (800–1,200 N·s/m) hei whai mana i te mahi. Ngā rāhui whakangungu ā-pāpā (mō te hanga) hei kitea ngā pāpā ā-ahuru torutoru (90x12mm) me ngā pūkeka parabola, whakatumanako i te whakarongo ki ngā hua pakiaka e tuhi ana ki 18 ton, me ngā whakangungu kaweake i waenganui hei whakaiti i ngā whiuwhiu. Ngā rāhui whakangungu ā-haika (mō te haere i waho) he whakapae i te whanonga pukapuka 300mm, me ngā pū haika ā-nitrogena (12,000N whakahoki), me te whakatika ā-mātātuhi mō ngā whenua kore-taha. Ko ngā rāhui katoa ka whakauru ngā pā whakangungu (whitiwhiti 45mm) hei whakaiti i te kaweake ā-taha e 40%. Whakaaetia ō rātau take whakangungu hei whakaatu i ngā kawenga-kaweake, ngā waehanga whakahaere, me te tirotiro matua mō ngā momo kaweake ā-wā.