Te hanganga tuara o ngā waka kōwhaiwhai hei hoko he mētaki i te whakatika ā-maire me te whanonga whakarite rūma. I hangaia ki te whakamahi i te tirohanga ā-wae matua, ko te tuara nuinga e whai ana i te tahinga 2.5° ki mua hei whakatetere i te wai i te tahikura, i hangaia mai i te ake pararahi 1.5mm me te koreta (85g/m²) hei whakahoki i te kōkiri. Ko ngā pūtake rohe-rohe i roto (pūtake C, 100x50mm) i whakapuarea i waenga o ngā 400mm, hei whakatū tonu i te kuhunga whakaweheweherea i runga i te 500 kg. Ki ngā momo eleeetika, ko te tuara he wāhi whakatakoto whakamahiti mo ngā paepae ra (momohia 1.2kW), i whakauru nei ki te rongoā whakahaere pari mo te whakangungu o te take whakatutuki. Ko te taha o te tuara i whakapakarihaia ki te whakapakari 50mm i te inoi, hei whakataki i ngā pakitara i te wā o te tirotiro, me te whakapakari i te gasket kumi silinea (-40°C ki +120°C) hei whakamau i te kīwaha. Mo ngā tūrangi tuara-tahi (whakarite ≥ 2.3m), ko te whakaae tuara e kī ai ngā poutū hiranga atu (120x60mm) hei whakarite i te whakapapa. Ko te whakamātau i ngā tauwhiri hau e whakaatu ana he 12% te itinga o te huringa i mua i ngā hanganga tuara horahora, hei whakapai i te whakawaekawe take. Tuku tonu ki tā tātou rōpū hanga hei wheako i ngā momo 3D me ngā tuhinga tohu kuhunga.