Hana ʻia me ke kila kila 304 kiʻekiʻe, ʻaʻohe wai, kūpaʻa i ka corrosion a maʻalahi hoʻi e hoʻomaʻemaʻe.
Ma hope o ka hoʻolālā kūikawā, hoʻohui pū ʻia ka mīkini, hana mechanized, ʻenehana hoʻoheheʻe ʻole ʻia, mesh mesh, a me ka nui pololei.
ʻO ka hana anti-slip maikaʻi, ka mana hoʻouka kiʻekiʻe, ke kūpaʻa paʻa ikaika, paʻakikī a paʻa.
Mea ikaika, hale paʻa, kūpaʻa hopena ikaika, ʻaʻohe burrs, lōʻihi lōʻihi.