KAJIMA CSR REPORT 2008 12
Providing Valuable Spaces for Everyone
Trust is based on quality and the ability to provide added
value. This is the starting point of craftsmanship and the
guiding light for Kajima's design, construction, property
development and property management activities. Kajima
will continue to take advantage of its strengths to deliver
premium-quality projects with added value, always
striving to earn trust with a spirit of true craftsmanship.
Shibaura Island
Kajima leverages its superior design and construction
services to create pleasant, safe and secure community
spaces that enhance the value of the surrounding
urban environment.
Restoring industrial land for the communityThe role of the waterfront regions that once supported
Japan’s rapid economic growth as centers for maritime
transport is evolving with the changing industrial
structure. The Shibaura Island project transformed the
Shibaura area (Minato-ku, Tokyo), which was an urban
area with few ties to the community, into a people-
friendly island of lush greenery and plentiful water, now
home to about 10,000 people in 4,000 households.
Shibaura Island was designated as the first high-rise
residential development area under Japan’s City Planning
Act. Kajima participated in the plan to redevelop this
urban area in a collaborative effort including public and
private organizations. Kajima designed and constructed
three of the four blocks in the project, primarily in the
ultra high-rise residence area, and also designed and built
part of the seawall.
Creating comfortable and secure homes for long-term livabilityKajima was convinced that, when providing such a large
number of homes in a prime urban location like
Shibaura Island, the buildings had to not only deliver the
comfort and safety that Kajima’s ultra high-rise
residences are known for, but also anticipate and provide
for future lifestyles. For Air Tower, one of Shibaura
Kajima’s Infrastructure and Services—Superior Quality with Added Value
Shibaura Island: From left, Air Tower, Grove Tower, Cape Tower
KAJIMA CSR REPORT 2008 13
Providing Valuable Spaces for Everyone
Kajima’s Infrastructure and Services—Superior Quality with Added Value
Island’s ultra high-rise condominiums, Kajima adopted a
double-tube structure and clearly demarcated the basic
structure, facilities and interiors so that residents could
select from a variety of dwelling unit plans and room
layout could even be changed in the future.
Kajima also included basic functions to ease daily life
for the elderly and created airtight and highly insu-
lated buildings in conformance with Japan’s housing
performance label system for design and construction.
In addition, Kajima envisioned the future comfort of
these homes by incorporating the Kajima IT
Condominium System, which provides security and
convenience and also improves building management.
In developing this project, Kajima succeeded in creating
an area where a large population can live comfortably
for the long term, going far beyond merely enabling
temporary prosperity. Although each block of the
project’s urban area was developed independently, the
layout, external appearance and plans for outdoor
facilities were coordinated to create a rich and varied
living environment for the entire area. Thanks to the
expansive exterior space, a diverse community—
families, elderly people, residents with pets, and many
others—now enjoys an urban oasis spreading out
beneath the windows of every home.
A new message for TokyoEven by Tokyo standards, this is a major development
project that has brought considerable value to both
Shibaura Island and the surrounding area. One example
is the splendid use of the water there. To achieve this,
the first of the Tokyo Metropolitan Government’s Canal
Renaissance Promotion Zones, Kajima communicated
closely with government agencies, found solutions for
various regulatory and construction issues, and built a
waterfront cityscape unlike any before it. Commercial
facilities and open-air terraces feature cafes where
people can relax and look out over the water.
At the nearby floating pier, both tourists and local
residents use the regularly scheduled water buses.
Tokyo has long been a place where people talk about
their urban lifestyles in terms of a city located on dry
land, but Kajima has now created a new waterborne
district, adding a whole new dimension of value to this
magnificent city.
Kajima’s job is to make structures featuring low envi-
ronmental impact, high functionality, and long service
life. The company focuses not just on what is needed at
the present, but also on the quality that will be called
for by future generations. A community built to last just
keeps getting better as the years go by, and provides the
type of environment that people truly desire to live in.
Kajima recognizes that this is the kind of place that
makes a city sustainable, and is dedicated to creating
more of these truly high-quality urban environments.
Exterior space seems boundless
Air Terrace, a commercial facility, adjacent to Air Tower
Shibaura Island, seen from the water
KAJIMA CSR REPORT 2008 14
Providing Valuable Spaces for Everyone
A New Subway Hub in Shibuya for Tokyo Metro’s Fukutoshin Line and Tokyu Railway
Subterranean development in urban areas often looks
like a battle with underground objects, including
utility lines for electricity, gas and water and sewage
systems, and optical fibers for telecommunications.
Moreover, existing train lines and passenger movement
must not be obstructed when constructing a new
subway station. Kajima overcomes all these challenges
using advanced technologies, and creates pleasant
station spaces that provide both safety and comfort.
Kajima’s Infrastructure and Services—Superior Quality with Added Value
The “Underground Spaceship” seen from five levels underground
Dramatically innovative design for the new Shibuya StationThe new Shibuya Station, the origin point for the
Fukutoshin Line, was built by a Kajima joint venture
approximately 30 meters directly below the Tokyo
Metro Hanzomon Line’s Shibuya Station. The station
needed a massive underground space for its four levels,
two platforms and four tracks.
Fukutoshin Line Route Map
Ikebukuro
Zoshigaya
Nishi-waseda
Higashi-shinjuku
Shinjuku
Kita-sando
Meiji-jingumae
Shibuya Fukutoshin Line
shinjuku-sanchome
Constructed by Kajima JV
JR L
ine
Marunouchi Line
Seibu Ikebukuro Line
Tobu Tojo Line
Tokyu Toyoko Line
Tokyu Den-en-toshi Line
Keio Inokashira Line
Ginza LineHanzomon Line
Yurakucho Line
above groundunderground
KAJIMA CSR REPORT 2008 15
Providing Valuable Spaces for Everyone
Kajima started building this underground space by
driving piles into Meiji Dori Avenue, one of Tokyo’s
busiest trunk roads, to construct an underground wall
and an open cut tunnel. Excavating directly under the
Hanzomon Line’s station was the biggest challenge, but
Kajima overcame this by digging out eight columns of
pilot tunnels immediately below the existing station
structure, and then installing a total of 112 steel piles.
The steel-frame beams were laid parallel with the pilot
tunnels and mounted on the piles so that eight columns
of steel-frame beams supported a station structure with
a total weight of 24,500 tons.
The massive underground space, known as the
“Underground Spaceship,” was designed by architect
Tadao Ando to resemble a spaceship floating deep
below ground. This underground spaceship, which is
encompassed by an elliptical capsule 80 meters long
and 24 meters wide, uses a natural ventilation system
and a radiant cooling system that saves about 1,000
tons of carbon dioxide emissions annually.
Tunnel between stations uses new environmentally friendly technologyThe Kajima joint venture was responsible for excavating
the span between Meiji-jingumae Station and Shibuya
Station, equivalent to 738.5 meters out of the 8.9 kilo-
meters in tunnels of the new route between Ikebukuro
and Shibuya. A variety of measures were taken during
construction to reduce the environmental impact.
Kajima has developed a technique called the
“Excavation Method of Adjustable Cutter” (EX-MAC)
to reduce the volume of soil unearthed during construc-
tion, introducing a new shield machine that flattens the
tunnel cross-section vertically from a circular shape
(composite circular shape) for this project. This reduced
the cutter excavation cross-section by about 10 percent
and decreased the volume of concrete required for
filling by about 40 percent.
Kajima’s Infrastructure and Services—Superior Quality with Added Value
Escalator in the “Underground Spaceship”
Platform level
Composite circular shape tunnel (between Shibuya and Meiji-jingumae Station)
KAJIMA CSR REPORT 2008 16
Providing Valuable Spaces for Everyone
Kajima’s Infrastructure and Services—Superior Quality with Added Value
Senayan Project: A Massive Asian Development Project
Senayan Square, located in the center of Indonesia’s
capital city of Jakarta, is a mixed-use commercial facil-
ity built on a vacant lot that had previously been home
to an aging sports facility. This approximately 20-
hectare site includes the Plaza Senayan shopping mall
with a floor area of 100,000 square meters, two office
buildings and two high-rise luxury condominiums.
P.T. Senayan Trikarya Sempana (STS), one of Kajima’s
Indonesian subsidiaries, is responsible for this urban
redevelopment project. Senayan Square is a build-
operate-transfer (BOT) project for the Indonesian
government in which STS develops and manages the
facility and then transfers it to the government at no
cost after 40 years.
Developing vibrant centers for community lifeKajima is committed to good corporate citizenship,
and is dedicated to growing side by side with local
communities by creating outstanding commercial
facilities. Kajima also regularly supports cultural and
artistic events and philanthropic initiatives.
One of Kajima’s cultural initiatives is the Khatulistiwa
Literature Award, launched in alliance with local
Indonesian publishers and novelist associations in
2001. The prize is awarded every year to the best works
of literature and poetry written and published by
Indonesians. The winning pieces are translated into
English so that they can be introduced to a foreign
audience.
Since 2000, Kajima has planned and administered a
fashion design contest in affiliation with a French
clothing design school to encourage young Indonesian
designers. The winners are given a scholarship to
attend design school as well as living allowances.
In addition, Kajima makes the atrium of the shopping
mall available for seasonal concerts and ballet
presentations by children from orphanages.
Senayan Square continues to growAt the end of 2007, the second office building was
completed in Senayan Square, and due to the high
occupancy rate, construction of a third office building
will begin in 2008.
Kajima will continue to give back to local communi-
ties, not only by developing and operating excellent
facilities, but also by creating new ways to enable more
people to enjoy a comfortable life.
Senayan Square Overview
Shopping Mall Plaza Senayan
Central Senayan 1 (left) and Central Senayan 2 (right)