Hoʻohana huahana:
1. ʻO nā mea hoʻonani i loko a me waho e like me ka pā kila, ka pā kila, ka pā pale metala, ka pahu kukui metala, nā puka aluminika a me nā puka makani, nā papa hoʻolaha, ka pā kūkulu hale, ka papa kiaʻi kūkulu hale, etc.
2. ʻO ke kila kihi ākea, ke kila awāwa, ka pā hao, ka pā waihoʻoluʻu, ka pā kini, ka papa PC, a me nā mea metala a me nā mea hao ʻole i hui pū ʻia no ka hoʻokomo ʻana.
3. Ma ka 'enekinia hale kila, ka riveting a me ka hoʻopaʻa 'ana o ke kila ka waihoʻoluʻu kile kila ma ka kihi kila, kanal kila, a me I-beam, kaʻa kino, pahu pahu, moku hana hale, refrigeration lako a me nā papahana hui 'ē aʻe.