No ke kumu kūʻai haʻahaʻa, hiki i nā geotextiles ke hoʻolōʻihi i ke ola o nā hale i kēlā me kēia lā ma o ka pale ʻana i ka hui ʻana o ka lepo subgrade a me ke kumu aggregate, a me ka hoʻopaʻa ʻana i nā subgrades maikaʻi ʻole.