Ko te rākau pū-pū e whakamahia ana mō te tāutanga ora o ngā here waea me ngā here waea whenua, ā, he pai hoki mō te tāutanga o ngā ara iahiko o runga me raro whenua me ngā momo hononga pito. Ko te āhuatanga matua o te rākau pū-pū-pū ko te pai o te mahi me te watea o te whakahaere. He mea hanga te tinana o te rākau ki te ngongo whatu epoxy kaha-teitei me te ngongo pultrusion, ā, kua paahitia e ngā hua katoa te whakamātautau auau mana o te 100kV/300mm. He ngāwari te horoi i ngā wāhanga katoa o te rākau pū-pū-pū kia ngāwari ai te tiaki, ā, kāore e hiahiatia kia wetewetehia i te wāhi hei horoi. Kei te wātea ngā rākau pū-pū i roto i ngā tae karaka me te kōwhai, ā, kei te wātea i roto i te momo kotahi, i te momo wāhanga rānei.