Its structure, with a wide top and a narrow base, wastes 30-40 % in steel reinforcing beams and is a huge waste in natural resources. In terms of structural mechanics, the new financial building in Chicago will be much more economical and effective, and will save more than 30 % in building materials. That's the engineering aesthetics of the future.
根據綠建築的「減廢」指標，因為不必要的造型、不合理的結構而造成建材的大量浪費，就是不永續的建築；同樣是超高大樓，芝加哥金融大樓將結構力學發揮得既經濟又效率，節約了 3 成以上的建材，才是未來工程美學應追求的方向。