New Tokyo Main Office Building - Aiming for Factor 4 or Above Integrating design and engineering
Factor 4 advocated by Weizsaecker and other scientists aims to double affluence, halve resource consumption, and quadruple resource productivity by revolutionizing efficiency. The environmental efficiency in CASBEE (Comprehensive Assessment System for Building Environmental Efficiency) is based on the same approach.
In creating the New Tokyo Main Office Building, we aimed for Factor 4, i.e.,a building environmental efficiency (BEE) of 4.0 or higher in CASBEE. By integrating the design and engineering technology which Takenaka has traditionally developed through members of its design, structure, facility, construction and technical teams, design and construction with a viewpoint connected with cost were carried out while reviewing feedback using Takenaka Comprehensive Assessment System for Building Environmental Efficiency. As a result a high environmental performance with a BEE of 4.6 was achieved.The building environmental performance (BEE) exceeds 4, meaning it is located within the region exceeding Factor 4.