Māmā ke kaumaha, maʻalahi ka lawelawe ʻana, maʻalahi ke kūkulu ʻana: He māmā loa ka mea paipu uila PVC, kamaʻilio, ma kahi o 1/5 o ka paipu metala, i hui pū ʻia me ka paipu PVC i hui pū ʻia me nā manaʻo kūkulu wikiwiki, no laila e maʻalahi ka lawelawe ʻana, ka hoʻouka ʻana a me ka wehe ʻana, ke kūkulu ʻana, hiki ke mālama i nā kumukūʻai a me ka manawa kūkulu.