Ko te rārangi pūhiko whakatō pū kē ki runga i ngā mahi whakairo rākau me ngā mahi whakairo mīhini. Kei roto i te rārangi ēnei āhuatanga e tino rite ana, ko ngā waehu matua hei whakamahere i te wā mo te hanga o ngā pū kē ki roto i te whenu. I hangaia ngā pū hiko i te HSS me te āhua pai rawa, ka whai ake nei i te wehi me te hanga o ngā totohu pai. He pai tēnei mo te hanga meenga, ngā pūtaka whare, me te whakaputu mai i ngā whenua mīhini, ka whakapai i ngā mataki me te whanonga o ngā huataki.