Opening of Takenaka Central Building South, a model case for office building stock revitalizationRefurbished into an ever-growing smart building with Building Communication System(BCS)Plus

Nov 15, 2022
Takenaka Corporation
Asahi Facilities

Takenaka Corporation (President: Masato Sasaki) and Asahi Facilities (President: Toshiki Okazaki), a building management company in the Takenaka Corporation Group, opened Takenaka Central Building South on October 3, consolidating the offices of seven group companies.
In this project, an existing 23 year-old office building was converted into a smart building to meet the changing needs of tenants in response to social demands for decarbonization and the diversification of work styles in recent years. During the renovation, the companies incorporated decarbonization and building operations management solution technologies, centered around Takenaka’s proprietary Building Communication System(BCS)Plus.(hereinafter referred to as the “BCS Plus”) Takenaka Corporation and Asahi Facilities have positioned Takenaka Central Building South as a smart building that will grow and evolve together with advanced technologies. The companies will continue to develop and implement related technologies and propose it as a model case for office building stock revitalization.

BCS Plus

BCS Plus is a solution package technology for smart buildings that consists of the cloud-based building data platform BCS, an IoT sensor network that responds quickly to changes in the environment and technological changes, a facility menu that is scalable and provides optionality, and an app menu designed for user convenience. Operational performance of building and equipment systems can be improved simply by updating software without updating building equipment.

BCS Plus

As a model case for office building stock renovation, this project focused on the following three areas.

  1. Office buildings ready for further decarbonization at the operational stage
    We plan to reduce CO2 emissions by approximately 50% from the pre-renovation actual levels of existing buildings by improving facade performance, installing high-efficiency heat plant sources and LED lighting, controlling outdoor air volume, installing solar power, and introducing natural ventilation. In addition, we aim to further reduce CO2 emissions by connecting building equipment data with BCS Plus even after the building is put into operation.
Life cycle CO2 emissions
  1. Development and demonstration sites for ever-growing smart buildings
    BCS Plus will be used to develop and demonstrate related technologies with the aim of reducing operational CO2 emissions and improving productivity in building facility management.
    1. Using building equipment data, Image analysis information (location information, amount of clothing, etc.) from 360-degree camera using AI technology, and operational data from environmental sensors, automatic control of air conditioning outlets and natural ventilation openings operations is introduced as a facility menu. In the future, further use of image analysis information will enable a proof-of-concept of lighting and air-conditioning controls that respond to the visual and temperature comfort.
    2. In building facility management, AI, IoT, and robots will be utilized to improve productivity in equipment management, security, cleaning, and other areas, as well as to build and provide new building facility management services with the aim to service the growing number of smart buildings in the future. In addition, the companies have set up a base in the building that will serve as a model for the next generation of building facility management by Asahi Facilities, and advanced building facility management practices will be implemented.
Central management center
  1. An office building with a common area to encourage interaction among tenants
    The interior of the building was planned to connect the walking flows by a newly installed stairs and to connect each tenant by establishing common areas with various themes at node points. Creating new contact points and fostering a sense of unity among the tenants aims to create an office space that promotes collaboration, interaction, and enhances creativity.
Newly installed atrium staircase

Construction Overview

Location 1-3-3,Shinsuna, Koto-ku ,Tokyo
Usage Office
Structure 7F/Steel structure
Total Floor Area 12,695.47㎡ (after renovation)
Design & Construction (Renovation) Takenaka Corporation
Renovation Period 2021.9~2022.7
Completion of existing building 1999