Last Uploaded: January, 2010

Dentsu Head Office Building

Architectural DataFeaturesCasbee ScoreTechnical Details建物リストに戻る
Ceramic printed glass
Ceramic printed glass Office air conditioning zone on a typical floor (air conditioning control by zone) Inside view of office Super mega frame and damper
From the adjoining Hamarikyu Onshi Teien (Garden) (harmony with surrounding environment) Southwest side (boomerang-shaped) East side (boomerang-shaped) Atrium (living space air conditioning)

Special Features

Q-1 Indoor Environment
  • Air conditioning system: Utilizes outlets with 4-direction variable flow rate function and wireless thermostats for living space.
  • Daylighting control: Utilizes ceramic printed glass and automatically controlled blinds.
  • Air conditioning control by zone: The air conditioning of the interior is controlled by a 3.6m x 7.2m module.
  • Lighting control: Control per span, task light control for each individual
  • External surface performance
    Window: SC=0.22, U=1.352 W/(m2・K）; Exterior wall: U=0.67 W/(m2・K）
  • Humidity control: Equipment capacity of approximately 45% in winter
  • Ventilation amount: 30 (CMH/person)
  • CO2 concentration monitoring control
Q-2 Quality of Service
  • Working space: 13 m2/person
  • Easy to change because of pre-wiring on the OA floor. OA power supply capacity: 50 VA/m2
  • Ceiling height: 2.7 m; story height: 4.1 m
  • The interior space shows various expressions with gradations from east to west.
  • Meets the requirements set forth by the "Smooth Use Standard" of the Heart Building law.
  • Earthquake resistance: Damage control design by dampers, improved earthquake resistance by adopting super mega frames
  • Durable period of aluminum curtain walls and decorated steel panels: 40 years
  • Upgradeability of equipment and appliances: Keeping an upgrading route, sequential upgrading, redundancy, backup, and other actions
Q-3 Outdoor Environment on Site
  • Building plan in harmony with the surrounding environment with consideration given to continuity with the Hamarikyu Onshi Teien and the town
  • The printing ratio and colors of the ceramic printed glass used for the exterior material are changed according to the direction.
  • On the south side, ceramic printed glass with 12 gradations from white to gray is laid from east to west, forming a façade with diversifying expressions.
  • The boomerang shape gradually changes in appearance when viewed from different angles, and accentuates the urban landscape.
LR-1 Energy
  • A BEMS is introduced.
  • Air conditioning monitoring, power monitoring, etc. are controlled in an integrated manner by integrated monitoring equipment.
  • Waste heat from cogeneration equipment is recycled.
  • Air flow windows fitted with ceramic printed glass are utilized.
  • Basic and functional lighting using natural light introduced through ceramic printed glass
  • Outside air cooling system utilizing an atrium as an air route
  • Limited living area air conditioning of the atrium
  • Cooling and humidification by water humidification for efficient use of outside air cooling
LR-2 Resources and Materials
  • Water-saving type toilet bowls and toilet flushing sound simulator have been installed.
  • Rainwater is used as reclaimed water.
  • Sewage reclaimed water from a broad area is recycled.
  • Electric furnace steel is used for sub beams, and Portland blast furnace slag cement is adopted for underground concrete.
  • System ceilings, steel panel walls, and OA floors have been adopted.
  • Inergen and dry chemical fire extinguishers
  • Restriction on use of materials difficult to recycle, such as polyvinyl chloride lining piping and FRP water tanks
LR-3 Off-site Environment
  • In the town, only the lower layer of the Dentsu Head Office Building receives warm water produced by the heat recovery HP of the DHC.
  • The Dentsu Head Office Building receives blow water from the cooling tower for the DHC and uses it as flushing water.
  • Low-noise type equipment and appliances are used.
  • The boomerang shape considerably reduces winds blowing through buildings and electromagnetic interference with the surrounding area.

Other Features

  • Design achieving harmony among architectural ideas, structure, and equipment
Previous BuildingPrevious Building Next BuildingNext Building
These cases are described based on assessment results obtained using CASBEE.
CASBEE is a method for rating the environmental performance of buildings using Building Environmental Efficiency (BEE) as an indicator, which is based on the results of separate scores obtained for Q-1~Q-3 (Quality) and LR-1~LR-3 (Load Reduction).