Coeru Shibuya Offices and Commercial Building

Coeru Shibuya Offices and Commercial Building
© Naohiro Ogura

COERU SHIBUYA OFFICES AND COMMERCIAL BUILDING

Maeda Corporation

ARCHITECTS
Maeda Corporation     

MECHANICAL ENGINEER 
Takumi Koga

ELECTRICAL ENGINEER   
Sho Roppongi

STRUCTURE ENGINEER
Yu Kurosawa

MANUFACTURERS   
Nozawa

CONTRACTORS
Maeda Corporation

STRUCTURE ENGINEERS
Holzstr

PROJECT ARCHITECT
Osamu Sakurai

ARCHITECT
Takao Ito

PHOTOGRAPHS
Naohiro Ogura

AREA
1408 M²

YEAR
2022

LOCATION
Shibuya City, Japan

CATEGORY
Office Buildings, Commercial Architecture

While the demand for timber materials for building construction has been increasing for recent years, Maeda Corporation and Holzstr in collaboration have developed Timber-Steel Hybrid structural brace “Mokkou-Kumiko.”

Coeru Shibuya Offices and Commercial Building
© Naohiro Ogura
Coeru Shibuya Offices and Commercial Building
© Naohiro Ogura
Coeru Shibuya Offices and Commercial Building
© Naohiro Ogura

This structure binds a steel plate by exposed red pine wood unitizing it into a lattice system that takes advantage of both toughness of compression by wood, and its tension by steel making high seismic resistance.

This structural system has been applied for COERU SHIBUYA for the first time, as the first project of the COERU series that tries to break the boundary between office and commercial facilities responding to diverse demands expected in coming years.

Coeru Shibuya Offices and Commercial Building
© Naohiro Ogura
Coeru Shibuya Offices and Commercial Building
© Naohiro Ogura

In this project, the hybrid lattice system was uniquely applied for two of its façades in a highly visible way, facing vibrant front streets in Shibuya, appealing to its use of exposed wood to high-rise buildings in a largely urban setting.

The exposed wood of the lattice system can be seen from both inside and outside without any steel bolt or gusset plate on its surface completely wrapping its steel axis by wood giving organic sense to its interior and exterior space.

Coeru Shibuya Offices and Commercial Building
© Naohiro Ogura
Coeru Shibuya Offices and Commercial Building
© Naohiro Ogura

The second means that makes wooden material a part of the building structural system is the Timber hybrid beam in which steel beams are covered by timber masses.

In case of fire, a certain depth from the surface of timber masses is intended to be carbonized layer to stop the combustion of the structural member and protect the steel beam inside.

Coeru Shibuya Offices and Commercial Building
© Naohiro Ogura
Coeru Shibuya Offices and Commercial Building
© Naohiro Ogura

Those timber-steel hybrid beams are applied to the structure above the 10th floor, and it is also structurally calculable in the same way as steel structure.

To be more environmentally friendly and sustainable, this project is supposed to use recyclable electricity pursuing the global environmental standard “RE100” with that corporation trying to use only recyclable electricity for their corporation activities.

Coeru Shibuya Offices and Commercial Building
© Naohiro Ogura
Coeru Shibuya Offices and Commercial Building
© Naohiro Ogura
Coeru Shibuya Offices and Commercial Building
© Naohiro Ogura

All the attempt to pursue sustainability in this relatively compact-scale building is intended to lead to more environmentally friendly urban projects.


Coeru Shibuya Offices and Commercial Building
© Naohiro Ogura
Coeru Shibuya Offices and Commercial Building
© Naohiro Ogura
Coeru Shibuya Offices and Commercial Building
© Naohiro Ogura


Coeru Shibuya Offices and Commercial Building
Plan - Reference Floor
Coeru Shibuya Offices and Commercial Building
Plan - Site