He maha nga kaihanga tohu, ki te hiahia koe ki te pono, ko te hanga me te whakaurunga kei te kaha ake te paerewa, me nga waahanga haumaru hangahanga kei te waahi.I taua wa, he uaua tonu te hanga o te tohu umanga, he karaehe toughened papa kopikopiko, ka taea te whakarite i nga papa papa whakarewa, a ko te wheketere tohu karaehe he kaihanga tohu, i whakamahia hei hanga tohu kamupene arumoni nui, tohu noho, tohu tari, tohu hōhipera, tohu rangatōpū wāhi ataahua, tohu kura, tohu whare tari, tohu tari taone.
Ko te roopu hoahoa katoa o nga kaihanga tohu i roto i te punaha whakahaere whakapumautanga kounga hua putaiao me te punaha whakahaere mo o taatau kaihoko ki te whakarato i te huinga katoa o nga otinga hoahoa punaha tautuhi hua.Mo tenei mahi whakangao konganuku, me mahi pai te tangata ki te ine ine paerewa, ka mau ki nga momo tawhā hangarau o te papanga konganuku, me te tatau i te kai o te tohu tohu, tohu tohu ranei.Ka taea hoki e nga tukanga maimoatanga rau te whakauru i te whakatikatika, te whakakoi me te whakamahana wera, te tango hinu, te aukati i te waikura, me etahi atu. E rua nga tikanga maimoatanga: te whakakikorua wai me te whakakikorua waiariki papa-rua.