ʻO ka ʻenekinia ikehu hāʻawi ʻia he ala hoʻolako ikehu i kūkulu ʻia ma ka ʻaoʻao o ka mea hoʻohana, hiki ke hoʻohana kūʻokoʻa a pili ʻia paha i ka pā. He ʻōnaehana ikehu hou kēia e hoʻoholo ai i ke ʻano a me ka hiki ke hoʻonui i ka waiwai a me nā pono kaiapuni a hiki ke hoʻohui a hoʻopaʻa pono i ka nui o ka ikehu o ka mea hoʻohana a me ke kūlana hoʻokaʻawale waiwai, me ka hoʻohana ʻana i ka hoʻolālā pane a me ka hoʻonohonoho modular. Loaʻa iā ia nā hiʻohiʻona o ka hoʻohana ʻana i ka ikehu kūpono, ka pohō liʻiliʻi, ka liʻiliʻi o ka pollution, ka hana maʻalahi, a me ka hoʻokele waiwai.

Hoʻolālā ʻia nā huahana huahana e like me ka pre-feasibility study, feasibility study report, project proposal, project application report, due diligence report, regulatory reporting, special plan, preliminary design, construction design, as-built drawing design, fire protection design, safety Implement design, occupational hygiene design, environmental protection design and etc.