Mori Building Comprehensive Earthquake Protection

Turning cities from places to ﬂee in the eventof an earthquake into places of refuge

Mori Building Co., Ltd. PR Department

6-10-1 Roppongi, Minato-ku, Tokyo 106-6155

TEL: 03-6406-6606 FAX: 03-6406-9306

April 2019

The Mori Building ideal of a "Vertical Garden City"

Hope in the sky
Green on the groundJoy beneath the surface
Opening up the space between buildings
ensures both brightness and privacy.

The spirit of challenge produces harmony. We are creating vertical city
functions that utilize the sky, ground, and underground each for the purposes
it is best suited for. By using the sky and underground, we can return greeneryto the surface. In this way we are creating a revolutionary space which allows
comfortable, fulﬁlling lives that do not place excessive burdens on theenvironment or the people. This is the "Vertical Garden City" ideal that Mori
Building is working to achieve.

Rice ﬁelds on the rooftops. From planting to harvest, the Vertical
Garden City creates opportunities to experience the rites of eachseason in the middle of the city.

Live where you can walk between home and work. Shorter
commuting time means more time to spend at leisure orwith family.

With more greenery and water on the surface, birds and insects
return to the city. Surface spaces are open spaces, for both people
and nature, and are a great place for children to play.

Replacing buildings and apartments with high-rises and moving
surface facilities underground creates a city with a good environment
and land that is covered with water and greenery.

You may be able to see cows and horses
in the middle of the city!

Increasing the amount of greenery and water greatly
reduces the heat island eﬀect. Redevelopment creates anenvironmentally friendly city.

Flowers can blossom even underground
if we let the light in.

The underground becomes a center of the arts, with theaters, concert
halls, art museums, libraries, studios, and other cultural facilities. There
are actually many facilities which do not need windows.

Underground spaces arenaturally cool during thesummer and warm during
the winter, helping toconserve energy.

In fact underground facilities are highly resistant to earthquakes.
The Mori Building cities are safe both above and below ground.

Cars travel on underground roads which are separated
from pedestrian paths, making everybody safer andreducing traﬃc congestion.

Vertical Garden City concepts
Safety andsecurity

Together with the urban infrastructure needed to support continuity of business and everyday lives, including buildings with superior
earthquake resistance and dependable energy supply systems, we are preparing organizational systems and human elements such as
emergency supplies to serve as a center for disaster readiness in order to create a safe and secure city.

GlobalEnvironmentand greeneryWe are actively working for greater urban greening as we aim for a harmony between cities and nature, creating expansive cityscapesthat are rich with vegetation and water on the surface. We are also using the latest technologies and working to create goodenvironments that are also highly energy eﬃcient.

Community

Cultureand arts

A creative city always overﬂowing with the most advanced information and arts gives rise to inspiration and new values. The city
itself can also be used as a form of media, creating lives that are ﬁlled with intellectual stimulation.

As a global standard urban environment that is suitable for a new international city center, we develop a stage where a variety of players
can be active, regardless of nationality, promoting a diverse range of communications and new connections.

The city is full of places and opportunities for encouraging communication among the local community that has developed there overgenerations and new residents, visitors, and others.
A true, mature community is a powerful support for a city, and it instills love for and pride in the city.

Mori Building Comprehensive Earthquake Protection

1

Working to create cities that are places ofrefuge in the event of a disaster2

Construction of a Safe Urban Infrastructure through Redevelopment
1-1

Safe and secure living achieved through redevelopment

01

1-2

Examples of urban infrastructure construction: The Hills Series

02

Hardware Earthquake Countermeasures
2-1

Earthquake resistance of super high-rise buildings

03

2-2

Roppongi Hills Mori Tower: The highest grade of earthquake resistance performance in Japan

04

2-3

Earthquake countermeasures to match the characteristics of the building

05

2-4

Original earthquake resistance standards that exceed the new ea rthquake-resistantdesign standards required by regulations

Safety and security are two of the most important and urgent issues which face Japan as a

Column（1）:Geographical characteristics of Minato City, Highly earthquake-resistant underground spaces

nation that is frequently subject to natural disasters such as earthquakes and typhoons.

2-5

The likelihood of an earthquake directly striking the capital of Tokyo is growing, and in order〜New measures taken following the Great East Japan Earthquake（1）〜to protect our lives and property, and also in order to gather people, products, ﬁnance,
intellect, and information from around the world, it is essential that we regenerate Tokyo as ahighly disaster-resistant city.

2-6

Stable supply of power from an independent power station (Roppongi Hills)

2-7

Emergency power generation system using city (medium-pressure) gas〜New measures taken following the Great East Japan Earthquake（2）〜Column（2）: Changes since the Great East Japan Earthquake:

The idea of city disaster-readiness also means changing a city from a place to escape in the

The growing need for safety and the state of companies' BCP (business continuity plan) formulation

event of a disaster to a place where one can ﬁnd refuge. By creating a grand design for the

2-8city and then conducting redevelopment and other work in stages based on the design, we
can reorganize and rebuild the aging urban infrastructure and narrow alleyways of the citywhile using global top-class vibration-damping technology to make the city into a center of

Post-earthquake building damage estimation system: e-Daps

07
08
09
11
13

14

Earthquake countermeasures for elevators

15

Column（3）: Mori Building's main earthquake countermeasure initiatives

17

Overview of Disaster Readiness Plan (Preface), Basic Disaster Readiness Policy

18

disaster-readiness.
3

Software Earthquake Countermeasures

We have declared our intention to make the city a place where one can ﬁnd refuge in time of

3-1

Disaster readiness organization system that can provide a rapid initial response even at night and on holidays

19

disaster, and are taking steps to carry it out.

3-2

Continual training of disaster-readiness personnel

20

3-3

Area management‒based disaster prevention network with Roppongi Hills as the hub

21

3-4

Customer satisfaction with the Mori Building management system

22

3-5

Disaster supplies and wells for use in disasters

23

3-6

Independently-developed information gathering system “Disaster Portal Site”

24

3-7

Reinforcing soft measures̶New measures following the Great East Japan Earthquake (3)

24

3-8

Improving overall area disaster readiness capabilities through collaboration
with government organizations, residents, neighborhoods, and ot her parties

26※ As of May 2017. Information in this document is subject to change without notice.

1｜Construction of a Safe Urban Infrastructure through Redevelopment

1-1

1-2

Safe and secure living achieved through redevelopment

The Mori Building redevelopment methods which rebuild the urban infrastructure are highly eﬀective in increasing thedisaster-readiness of a city, and produce improvements to areas of closely-packed wooden buildings. By consolidating areas ofhigh-density low-rise buildings into super high-rise buildings that are highly resistant to earthquakes and ﬁre, and also by conducting
development that is integrated with regional roads and other infrastructure, it is possible to create a nearby place of refuge and to
improve the disaster-readiness of the entire region.
Mori Building is working to make eﬀective use of our limited city space and create spaces and areas of greenery where people can relax
and where there is plenty of space to gather if necessary, in order to create safe and secure living for everybody.

800 m2 × 50 stories × 75%(eﬀective usage rate)(Building-to-land ratio 2.7%)= 30,000 m2 = 3 ha

Examples of urban infrastructure construction: The Hills Series

An excellent example of urban infrastructure reconstruction can be seen in the Hills Series of large-scale multipurpose redevelopment projects.

ARK Hills (1986)〜The starting point of large-scale redevelopment in areas of densely-packed wooden buildings〜

District area: Approx. 5.6 ha
ARK Hills was the ﬁrst private large-scale
redevelopment project in Japan, and turned an area ofdensely-packed wooden buildings into an advanced
multipurpose city district.
The oﬃce building, ARK Mori Building, incorporates
the most advanced vibration-damping systems of thetime, and provides earthquake safety that isequivalent to the latest super high-rise buildings built
after the year 2000.
Before redevelopment

Roppongi Hills (2003)

After redevelopment〜Creating urban infrastructure for a city that is a place of refuge〜

District area: Approx. 12.0 ha

100 m2 × 300 houses = 30,000 m2 = 3 ha
300 densely-packed houses can be consolidated into one 50-story super high-rise. This results in ample open space at the base.

Use of the space at ground level andabove creates open spaces all around.

Vibration control systems create super high-rises withhigh earthquake resistance.

This urban redevelopment project was on the largest scale ofany private project and involved the creation of a revolutionary
new foundation for urban safety that includes roads and otherinfrastructure.
In preparation for a possible scenario in which 5,000 people areunable to return home, the largest private stock of emergency
supplies has been prepared. The neighborhood association
composed of local residents and workers also conducts general
disaster readiness training every year, and it is preparing to be acenter of regional disaster readiness in terms of both
Before redevelopment
infrastructure and human capabilities.
●

After redevelopment

Examples of infrastructure work during the Roppongi Hills projectThis project not only replaced the buildings, but also improved the regionaltransportation network, separated the spaces for pedestrian and vehicle
traﬃc, and involved other steps for the construction of a safe urban
infrastructure.
Before the project, the area contained complex narrow streets where ﬁretrucks could not enter in case of a ﬁre, and was highly susceptible to disaster.
By combining the fragmented properties and collecting the isolated buildings
together into a super high-rise, it was possible to create larger roads and wide
open spaces on the ground.
District before redevelopment

Toranomon Hills (2014)

Construction of regional arterial
roads, open spaces, and otherspaces through redevelopment〜Model project for urban renewal through a public-private partnership making use of a Multi-Level Road System 〜District area: Approx. 1.7 ha
Making use of a Multi-Level Road System, this innovative
project uses land eﬀectively by constructing buildings in space
above and below roads, redeveloped into a zone allowing
construction. The Loop Road (Kanjo) No. 2, which connects
central Tokyo and the oceanfront over its 14km length, runs
underground beneath a 247m tall building. This is a modelcase for new urban development that makes maximal use of
precious land and enables the creation of a multifunctional
and advanced multi-level city within central Tokyo.
Wide roads and traﬃc infrastructure can be constructedat the same time.
01

Active use of underground spaces which are highly
resistant to earthquakes

Before redevelopment

After redevelopment* The project was undertaken by the Tokyo Metropolitan Government, with Mori Building acting as a "speciﬁed builder."02

2｜Hardware Earthquake Countermeasures
Vibration-damping systems that are also eﬀective with long-period seismic vibration

Earthquake resistance of super high-rise buildings

Although there is concern of an earthquake directly striking the Tokyo Metropolitan Area, it is already known that the short-frequency
vibration of a near-ﬁeld earthquake will not cause serious damage to super high-rise buildings. While approximately 240,000 mid- andlow-rise buildings were destroyed or collapsed during the Hanshin-Awaji earthquake, which reached a maximum of 7 on the Japaneseseismic intensity scale, no super high-rise buildings suﬀered major damage.
On the other hand, long-period seismic vibration occurs at locations farther from the epicenter, and moves the ground more slowly.
Despite the slower acceleration, this causes super high-rise buildings to sway more than smaller buildings, producing the phenomenon
known as resonance.
Near-ﬁeld earthquake

Long-period seismic vibration

Smaller buildings shake violently,

High-rise buildings sway largely

while high-rise buildings move

while lower buildings move little.

little at all.

Duration is short, with large vibrations
repeating rapidly.

Resonance

Duration is long, with small vibrations
repeating over a longer cycle.

Vibration-damping systems are highly eﬀective as a means of reducing the swaying of super high-risebuildings during an earthquake. Vibration-damping systems can be broadly divided into two types:
viscous dampers in which the resistance of oil or a viscous ﬂuid absorbs the vibration, and steel
dampers which concentrate damage in vibration-damping material in order to protect pillars andbeams. Viscous dampers are eﬀective in absorbing all levels of movement from swaying caused bywind to major earthquakes, while relatively inexpensive steel dampers are particularly eﬀective inmajor earthquakes. Using these vibration-damping systems in combination makes it possible toachieve broad-ranging eﬀects while keeping costs down.
(Examples of use: Roppongi Hills Mori Tower, ARK Hills Sengokuyama Mori Tower, Toranomon Hills
Mori Tower, etc.)
1

2

3

4

5

5+

6

6+

●

●

Results from Tonankai earthquake simulation for Roppongi Hills Mori Tower
With vibration-damping systems
Without vibration-damping systems

Results from Tonankai earthquake simulation
for Roppongi Hills Mori Tower Withvibration-damping systems Without
vibration-damping systems Displacement

Roppongi Hills Mori Tower: The highest grade of earthquake resistance performance in Japan

Roppongi Hills Mori Tower utilizes a combination of semi-active oil
dampers (viscous dampers) and unbounded braces (steel dampers) toachieve the highest grade of earthquake resistance performance inJapan, ensuring that the building will continue to function even in theevent of an earthquake on the same level as the Great Hanshin-Awaji
Earthquake Disaster. These systems greatly reduce building
movement, whether swaying due to wind or movement due to major
earthquake, delivering high levels of safety and comfort to theresidents. During the Great East Japan Earthquake, at the restauranton the 51st ﬂoor not a single wine glass fell over.

Viscous dampers

Viscous wall damper

It is now said that a Tonankai earthquake islikely, and will produce strong long-period
seismic vibrations in the Kanto area.
Simulations show that in the event of a
maximum magnitude Tonankai earthquake, thevibration-damping systems will reduce
movement on the 54th ﬂoor of the Roppongi
Hills Mori Tower by approximately half.

2-2

Vibration-damping systems which absorb seismic energy in super high-rise buildings●

The concern with long-period seismic vibration is that a high-rise building will resonate, producing large movement and causing
repeated deformation of the building over a long period of time. In this case as well, vibration-damping systems can have a large eﬀect.
Although the eﬀects depend on the types and number of vibration-damping systems used, it is possible to reduce movement due tolong-period seismic vibration by 50%.

Displacement

2-1

Semi-active oil dampers
356 installed in the building
Electrical control adjusts the ﬂow of oil inside the dampers,
absorbing all kinds of movement from swaying caused by the wind
to major earthquakes.

Oil damper

Steel dampers

7（Seismic intensity）

Viscous
damperSteeldamper

Low yield-point steel
damping wall

Unbonded brace

Unbonded braces
192 installed in the building

Three eﬀects of vibration-damping systems：Halving of building sway *Analysis of readings from seismographs installed in key buildings reveals that seismic mitigation systems reduce three values insuper high-rise buildings during an earthquake: the amplitude (deformation), duration, and speed (acceleration) of building
movement.
Our company provided seismographic survey data,measured at the Roppongi Hills Mori Tower during theGreat East Japan Earthquake, to Professor Kazuhiko
Kasai, an authority on anti-seismic engineering andhead of the Structural Engineering Research Center,
Tokyo Institute of Technology. Together we engaged injoint research into seismic mitigation and vibration
damping eﬀects. The research demonstrated thatvibration control devices halved building displacement(measured value of 32cm on one side)* and also
showed an eﬀect on early convergence of swaying.
* Amplitude of sway in the y direction measured in the Roppongi Hills Mori Tower
during the Great East Japan Earthquake (30cm in the x direction). The amplitude ofsway without seismic mitigation systems was estimated by computer simulation to
be 61cm.

03

These braces use a soft steel that has the ability to stretch, and iseﬀective in absorbing energy when an earthquake occurs.

Roppongi Hills Mori Tower

Displacement measured at the top (54F) of the Roppongi Hills Mori Tower during
the Great East Japan Earthquake.

04

2｜Hardware Earthquake Countermeasures

2-3

Earthquake countermeasures to match the characteristics of the building

In accordance with our own earthquake resistance standards, our company selects a variety of construction methods according to advantages indevelopment and utilization of space.

ARK Mori Building (1986)

Atago Green Hills Forest Tower (2001)

This building was designed so that in the event of a major
earthquake, vibration is concentrated in the "slit wall"
vibration-damping systems in order to protect pillars and beams,
minimizing structural damage.

Ordinarily 50 ‒ 100-ton oil dampers were used in residencebuildings of this size, however in order to obtain larger
vibration-damping eﬀects, we made use of the large installation
space available and installed 200-ton dampers.

Toranomon Hills Mori Tower (2014)

Ceiling

This building employs three types of vibration control device: oil dampers, brake dampers, and unbonded braces. These achieve advanced
anti-seismic performance allowing continuity of business without major damage, even in the event of a major earthquake on par with theGreat Hanshin-Awaji Earthquake or the Great East Japan Earthquake. By adopting such vibration control devices, Toranomon Hills Mori
Tower achieves JSCA* "Special Grade" seismic resistance performance.
* Japan Structural Consultants Association

Oil dampers (516 units installed)
Slits

These exert an eﬀect incontrolling vibration fromstrong wind or even major
earthquakes, by absorbing
the energy of vibration
through ﬂuid resistance.

Brake dampers* (620 units installed)
The frictional force of thebraking material converts
the vibration energy into
frictional heat, lessening
damage to the building.

Floor
Slit wall

200-ton oil damper

Motoazabu Hills (2002)

Roppongi Hills Keyakizaka Complex (2003)

Focusing on living comfort of the housing complex, a base isolating
structure was used, however because there were also concerns thatswaying of a super high-rise building during an earthquake could pull
the building out of its foundations, additional steps were taken suchas the use of high-strength base isolation rubber and broadening of
the building's base.

This building uses Mori Building original green mass dampers ‒dampers which use the 3,650 tons of soil in the rooftop garden as acounterweight. Ordinarily considered a disadvantage, the weight ofthe soil was instead put to good use.

Base isolation rubber* Has properties similar to those of steel dampers

Unbonded braces (steel dampers)(82 installed in the building)
These braces use a soft steel
that has the ability tostretch, and is eﬀective inabsorbing energy when an
earthquake occurs.

ARK Hills Sengokuyama Mori Tower（2012）
The dual use of viscous wall dampers,
which are eﬀective for a wide range ofmovements from wind-inducedswaying and small- and medium-scale
earthquakes to large earthquakes, andbrake dampers, which are particularly
eﬀective for large earthquakes, as
vibration control devices makes it
possible to control not only unpleasantswaying caused by the wind but also
small to large earthquakes andlong-period earthquake vibrations, theimpact of which on super-high-risebuilding are a source of concern.
Brake dampers

05

Viscous wall dampers

DamperBase isolation rubber

Omotesando Hills (2006)
Intermediate vibration dampers were
installed between the residence ﬂoors
and shop ﬂoors. This created adiﬀerent span between the housing
and commercial spaces and prevented
noise from cleaning of the shops
below form reaching the residences,while also improving the earthquake
resistance performance of the entire
building.

Intermediate vibration-damping systems

Shanghai World Financial Center(2008)
Following the September 11 terrorist
attacks in New York City, the design planfor this building was reviewed and a dual
tube structure (megastructure on
periphery and a steel-reinforced corewall at the center) was adopted. The
structure will prevent the entire building
from collapsing even if localized damage
occurs in excess of expectations.

Structural model

ARK Hills Front Tower (2011)
Utilizing the characteristics of the ﬂoor structure
which places parking areas on ﬂoors 3 ‒ 5, atsame height as the neighboring Tokyo
Metropolitan Expressway, large numbers ofvibration dampers were placed in these ﬂoors
instead of the usual balanced arrangement on
standard ﬂoors. Collecting the dampers on theseﬂoors makes more eﬀective use of the standard
ﬂoors possible.

Vibration-damping systems
collected on three ﬂoors(shown in red)

06

松戸市
北区

葛飾区

2｜Hardware Earthquake Countermeasures

練馬区

1

西東京市

荒川区

2-4

Original earthquake resistance standards that exceed the new earthquake-resistantdesign standards required by regulations

市川市

豊島区

池袋

Geographical characteristics of Minato City
文京区

Mori Building uses its own original high standards for earthquake resistance in all the large-scale buildings which we operate and manage (total ﬂoor
space more than 10,000 m2). All of them feature earthquake resistance performance that is at or above the new earthquake-resistant design
standards required by regulations.
Earthquake resistance performance
Level
exceeding
new seismic
performancelevel *1

New seismic
performancelevel *2

Old seismic
performancelevel *3

三鷹市

2017

Toranomon Hills Mori Tower

2014

Emergency power generator
for shared tenant use (installed).

杉並区

2012

Emergency power generatorsfor business continuity

ARK Hills Front Tower

2011

Space available for installationof tenant generators.

2009Space available for installationof tenant generators.

2004

Space available for installationof tenant generators.

Roppongi Hills Mori Tower

2003

Power supplied by specially designatedpower supply business facility.

The Prudential Tower

2002

Space available for installationof tenant generators.

Atago Green Hills Mori Tower

2001（2007）

Emergency power generator
for shared tenant use (installed).

Roppongi Hills Gate Tower

2001

江戸川区

Heights
above
sea level

中央区

Tokyo

2000

Koraku Mori Building

2000

Space available for installationof tenant generators.

ARK Mori Building

1986（2005）Space available for installationof tenant generators.

Roppongi First Building

1993

Space available for installationof tenant generators.

Toranomon 37 Mori Building

1981（1999）

Toranomon 36 Mori Building

1981（2004、
2012）

Emergency power generator
for shared tenant use (installed).

Toranomon 35 Mori Building

1981（2001、2011）

Emergency power generator
for shared tenant use (installed).

Toranomon 33 Mori Building

1977（1999、
2007）

Toranomon 30 Mori Building

1975（2007）

Roppongi Hills North Tower

1971（2004）

Toranomon 15 Mori Building

1969（2010）

77m

市川市

江東区

Toranomon

4m

Shimbashi
Roppongi

3 m ‒ Less than 4 m

Roppongi Hills

Shibuya

調布市

Shiodome

Kamiyacho

1 m ‒ Less than 3 m

Hamamatsucho

Minato-ku

0 m ‒ Less than 1 m-1 m ‒ Less than 0 m
浦安市

世田谷区

Meguro狛江市-4 m ‒ Less than -1 m
Water

目黒区

ShinagawaArea where our buildings
are located
臨海副都心
多摩区
品川区

高津区

Mori Building super high-rises are supported by a strong
ground foundation.

●

Reference: Ground structure in area around Minato City
Comparatively new soil layer composed of landﬁll,
leaf soil, and other soil Ordinarily a weak stratum

宮前区

Surface soil (N = 1 ‒ 5)

中原区

大田区

Loam layer (N = 1 ‒ 5)

Tokyo layer (N = 10 ‒ 50)

Tokyo gravel layer(N = 50 or more)

幸区

Space available for installationof tenant generators.

Akasaka Tameike Tower

Source: Geographical Survey Institute

千代田区

Emergency power generator
for shared tenant use (installed).

2013

ARK Hills
Sengokuyama Mori Tower

Holland Hills Mori Tower

新宿
Topographical map of ground height
above sea level in Tokyo Metropolitan Area

渋谷区

GINZA SIX

Hirakawacho Mori Tower

秋葉原

Other
Space available for installationof tenant generators.
Emergency power generator (installed).

ARK Hills South Tower

新宿区●

Disaster
Adoption
Emergency
ELV long-period
damageof vibration
earthquake earthquake Emergency
estimation
wells
control
warning countermeasuressystem:*4
devicessysteme-Daps

墨田区
台東区

中野区

15 ‒ 30 m
in Minato City area

Building nameYearcompleted(renovated)

上野

Nearly all of our buildings are located on high ground in areas where liquefaction is unlikely to occur. In addition, the buildings
are supported by stable structures and a sturdy ground foundation.

武蔵野市

Layer composed of volcanic ash. This soft,
reddish-brown soil layer is popularly known
as akatsuchi (red earth).
Layer composed primarily of sand reaching to
the Tokyo gravel layer.
Layer composed of sand and gravel.
This layer is hard and strong, and is often usedas the supporting base for pile foundations.

川崎区

Kazusa layers (sandy layers)(N = 50 or more)±0
Sandy earth
Pile foundation

Hard earth-30m
Direct foundation

Kazusa layers (clay layers)(N = 50 or more)

Extremely hard sandy layer positioned at the
top of the Kazusa layers
Group of layers located at the bottom of the
Kazusa layers.
Ordinarily known as "hardpan".
Soft rock layers composed of semi-solid clay
and silt. Impermeable to water.

Highly earthquake-resistant underground spaces
Little earth movement

Underground structures are sturdy.

Because deformation of underground spaces in the lateral direction
is limited by the densely packed ground, movement during anearthquake is small. This performance was veriﬁed from the resultsof earthquake measurement during the Northwest Chiba
Earthquake (July 23, 2005).

Because underground structures are built to resist soilpressure, the outside is surrounded by a thick wall, creatinga strong structure like a concrete box. During the Great
Hanshin-Awaji Earthquake Disaster, there was less damage
to subways and other underground facilities compared withthe heavily-damaged above-ground structures.

Acceleration (gal)Renovation forearthquake resistance※1 Level exceeding new seismic performance level: Earthquake resistance performance that exceeds the standards determined by the current Building Standards Law※2 New seismic performance level: Earthquake resistance performance that meets the standards determined by the current Building Standards Law※3 Old seismic performance level: Earthquake resistance performance that meets the standards prior to revision of the Building Standards Law in 1981

Time (s)※4 ELV long-period earthquake countermeasures are installed according to the length of elevator shaft(measures to prevent ropes becoming caught when resonance occurs).

07

Renovated building
nameCompleatedCompletion ofrenovation

Toranomon 11 Mori Building

1966

2010

Nishi-Shimbashi 2-chome
Mori Building

1966

2008

Toranomon 15 Mori Building

1969

2010

Edomisaka Mori Building

1974

2009

Acceleration (gal)Renovation for improving earthquake
resistance as well as renovation of theexterior and other elements has been
completed at all operating buildings whichwere constructed before the new seismic
performance standards were established in
1981, and all are operating at full capacity
following the renovations.

Time (s)Earthquake
Renovation of the Toranomon 15 Mori Building08

2｜Hardware Earthquake Countermeasures

2-5

Post-earthquake building damage estimation system: e-Daps〜New measures taken following the Great East Japan Earthquake（1）〜Our company has developed e-Daps (Earthquake Damage Presumption System), a system able to make preliminary assessments of damage tobuildings immediately following an earthquake. We have adopted the system in Roppongi Hills, Toranomon Hills, and other major buildings.
e-Daps automatically performs real-time analysis of acceleration of sway and deformation in a building, based on the building's speciﬁc
structural properties and data from seismographs installed inside. Where assessment of structural safety is diﬃcult to perform visually, thesystem enables assessment on the basis of measurement data, allowing ﬁrst response with priorities ordered.
By building in a unique mechanism that can immediately determine the presence of long-period earthquake vibrations to which high-risebuildings are vulnerable, we have equipped the system with functions to issue warnings before shaking becomes signiﬁcant. The ability toperform measurement-based safety checking immediately following a large earthquake contributes to tenants' BCP and to the safety andsecurity of residents, and is an eﬀective aid when sheltering stranded persons.

Full-time monitoring of earthquake vibrationin the Security Control Center of each building

Simple display and voice-based announcements that are intuitively understandable even to non-experts
e-Daps display

Occurrence ofearthquake
1

2

3

Real-time deployment using dedicated lines

4

Disaster Response Headquarters

2

5

Design and Engineering Division

5

The Disaster Response Headquarters and Design andEngineering Division are able to view the displays for all
e-Daps-equipped buildings.

❶ Display of seismograph data waveforms ❸ Display of ground surface maximum acceleration;
maximum acceleration and displacement inside❷ Real-time display of building swaythe building, and ground surface seismic intensity

Immediately communicate determination results❹ Display indicating presence of long-period earthquake vibrations❺ Elevation display of building damage estimation analysis(building frame damage, toppling of household goods)

The system enables speedy and eﬀective disaster readiness and response by automatically e-mailing reports to concerned parties and by linking
with the proprietary Disaster Portal Site system that enables centralized online management of the damage status of buildings managed andoperated by our company.

Buildings with e-Daps disaster damage estimation system in operation (Total: 12)

Roppongi Hills
Mori Tower

Motoazabu Hills
Forest Tower
09

Toranomon Hills
Mori Tower

Roppongi Hills
Residence C

ARK Hills Sengokuyama
Mori Tower

Roppongi Hills
Residence D

ARK Mori Building

Atago Green Hills
Forest Tower

Atago Green Hills
Mori Tower

ARK Towers

Hirakawacho
Mori Tower

Omotesando Hills

Bulletins

Automatic email sending feature

Linkage with the Disaster Portal Site

Assessment results are automaticallyconverted to an A4-sized report for
immediate use by tenants and otherconcerned parties as brieﬁng materials.

Along with a PDF-based bulletin, an email containing
the assessment results is automatically sent to allconcerned parties. This enables immediate
understanding of the situation even from remote areas.

By linking with our own disaster information collection system,
the system indicates ﬂoors to be given high-priority checking, andis eﬀective in wide-area damage estimation and support fromneighboring buildings.
10

2｜Hardware Earthquake Countermeasures

2-6

Stable supply of power from an independent power station (Roppongi Hills)

Roppongi Hills uses its own energy plant (specially designated power supply business facility) to supply electrical power to the area.
Because this plant uses city gas (medium pressure gas) as the fuel, it is not aﬀected by power restrictions on the use of electricity and is able
to provide an extremely stable supply of electrical power .
The use of a power supply with triple redundant safety allows us to construct a power supply system with high reliability exceeding that ofordinary S-class buildings.

By combining excess capacity and energy-conservation, power was supplied from Roppongi Hills to TEPCO following the Great East Japan
Earthquake at times when demand was compressing supply as shown below .
March 18 ‒ April 30, 2011

Supply period

Private area

July 1 ‒ September 22, 2011

24 hours

Supply hours
6:00 ‒ 20:00: 4,000 kW
20:00 ‒ 06:00: 3,000 kW

Supplied power

Roppongi Hills Mori Tower

Shared(Common) area

Supply of power from Roppongi Hills to TEPCO

6:00 ‒ 20:00: 5,000 kW
20:00 ‒ 06:00: 4,000 kW（4,000 kW = Amount of power consumed by 1,100 ordinary households）

Area use of private power generation and exothermic energy systems
Roppongi Hills has constructed an energy network covering the entire area, and uses energy eﬃciently everywhere. A system known as"large-scale gas cogeneration + district heating and cooling (DHC)" has been introduced. With this system, electrical power is generated bymedium pressure gas at the underground energy plant, and the waste heat is used for heating and cooling of oﬃces, hotels, andcommercial facilities within the area.
Roppongi Hills Mori Tower
Power

Roppongi Hills Residences
Power

Steam

Chilledwater

Power grid

Uninterrupted(Continuous)
backupCity(mediumpressure) gas(Tokyo Gas)

Generator

Kerosene

Power station

Chilled
water

Power

Chilledwater Steam

Smokestack

Medium pressure gas line

Shiba G

11

Ogishima Plant

Sodegaura Plant

Water

Cooling water for gas engine

Steam absorption refrigerator(Uses the energy of steam toproduce chilled water)

Gas engine power generator

Back-up power(electrical grid)

Kerosene

Emergency power generator

Power supply facilities

Hot water absorption refrigerator(Produce chilled water using the cooling waterfrom the gas engine for energy)

Heat supply facilities

Roppongi Hills is composed of oﬃces, residences, commercial facilities, a hotel, and other multipurpose facilities. Because demand for
power and heat is stable and peak power demand is equalized, eﬃcient energy use is achieved.
Moreover, the cogeneration system produces both electricity and heat together, and the waste heat from power generation is put to bestuse, reducing energy consumption by 16% and CO₂ emissions by 18%.
A 42% reduction in emissions of the NOx (nitrogen oxides) which are a cause of air pollution is achieved by the use of gas turbine
denitriﬁcation equipment and low NOx boilers. The system we have constructed has an extremely low environmental impact.

10% reduction

Reduction in primaryenergy consumption

229×103GJ/year

Medium pressure line

Negishi Plant

Steam header

Steam (for heating)

Yodobashi G

High pressure line

Steam header(For reference) Environmental characteristics

Medium pressure line

Oi governor station

City gas

Water

Power receiving
equipment

Medium pressure gas lines were not damaged during the Great
Hanshin-Awaji Earthquake Disaster

Steam boiler

SteamPower distribution
equipment

System diagram of city gas supply network

Roppongi Hills

Cooling tower(on hotel roof top)

Exhaust heat boiler

City gas

A looped and networked supply route is used for the city gas (medium pressure gas) that is used as fuel for power generation (normal
power generation) at Roppongi Hills. In addition, the city gas medium pressure lines are more resistant to earthquakes than the electrical
power infrastructure, and are a highly reliable utility infrastructure.

Meguro G

Power

Exhaust gas

High reliability of city gas (medium pressure gas) supply

Shinkashigawa
governor station

Heat supply pipe

6KV power distribution cable

Exhaust gas

Hitachi Plant

TV Asahi
Chilledwater Steam

TrenchProvides power in the case of emergencies
when the supply from city (medium-pressure) gas
and power companies is interrupted

●

Steam

Power SteamPowerdistribution
equipment

Power company(grid power)

Chilled water

Hollywood Beauty Plaza/ Metro Hat
Keyaki-zaka Terrace

Grand Hyatt Tokyo
Keyaki-zaka Complex

Does not break evenwhen bent 180°

Primary energy consumption
2,036×103GJ/year

CO₂ reduction

27% reduction
39×103ton-CO₂ /year
Emissions
103×103ton-CO₂ / year

NOx reduction

40% reduction
19.1tons/year

Emissions
28.2tons/year
Results from FY 201312

2｜Hardware Earthquake Countermeasures

2-7

Emergency power generation system using city (medium-pressure) gas〜New measures taken following the Great East Japan Earthquake（2）〜Changes since the Great East Japan Earthquake:
The growing need for safety and the state of companies' BCP (business continuity plan) formulation

Introduction of emergency private power generation to enable business
continuity in the ARK Hills Sengokuyama Mori Tower Project

Since 2003, our company has conducted The Survey of Oﬃce Needs in Tokyoʼs 23 Cities* to assess oﬃce market demand trends. Following
the Great East Japan Earthquake, the survey has revealed a growing desire for seismic resistance and safety in tenant buildings, as well asoﬃce environments that support business continuity.

ARK Hills Sengokuyama Mori Tower (completed in August 2012) has adopted an emergency power
generation system through design changes made after the Great East Japan Earthquake. The systemallows tenant companies to continue with business as usual during a power outage by supplying
electricity privately generated using city (medium-pressure) gas. Because of this, we have constructed anelectrical supply system that can fulﬁll 85% of the ordinary demand for electrical power in an emergency,
supporting the BCP of companies by ensuring extremely high dependability that exceeds the levels
oﬀered by ordinary high-grade buildings.

*A questionnaire-based survey concerning oﬃce demand, targeting the top 10,000 companies (by capitalization) that have headquarters located within the 23 Cities of Tokyo. Conducted in October 2016.

Reason for new lease plans change in ranking

Power supply on standard oﬃce ﬂoors during power outages

Approximately 85% of expectedpeak energy use can be supplied.

ARK Hills
Sengokuyama
Mori Tower

Electrical power can also be supplied to the oﬃces in
addition to the disaster-readiness equipment andother shared parts.
【Normal Conditions】
Distribution
equipment

TEPCO【Blackout】
Backup ①

City gas supply
network
BackupCity gas (medium pressure gas)

Emergency
generator(dual type)Backup ②
Fuel oil (expanded tank capacity)*1 Emergency equipment (such as ﬁre-ﬁghting equipment and smoke ventilation equipment)prescribed in the Fire Services Act and Building Standards Law, and the minimum necessary
safety systems (security, some equipment) necessary to maintain the building as decided
by the building management company.
*2 Ordinary electrical load excluding the above, such as lighting, OA outlets, and air conditioning

Shared areas
Air conditioning in shared areas*Adjust according to the building overall power demand

No. 1

No. 1: To Expand Business /To Accommodate an Increase in Employees

No. 2

No. 2: More Floorspace per Floor

No. 3

No. 3: Better Location

No. 4

No. 4: Anti-seismic Design
No. 4: Lower Rent / Lower-Priced Building

No. 5
No. 6

No. 6: Higher Grade Facilities

No. 7

No. 7: Superior Security

No. 8

No. 8: Disaster Prevention Systems / Backup Systems

When companies were asked about their business continuity plans, over half of the respondents indicated that they "Have a plan
formulated," which rises to 80% with the inclusion of "Intend to formulate a plan." These responses were high in the ﬁnancial and insurance
industry and in foreign-aﬃliated companies. Those companies which have formulated a business continuity plan, when questioned about
the content of their plans, revealed high response rates for items including "Means for verifying safety of employees," "Securing ofearthquake readiness supplies," and "Means for handling stranded employees." Five years after the Great East Japan Earthquake, the majority
of companies continue to forge ahead with preparation plans. At the same time, the 21% response rate for "Do not intend to formulate"reveals the need to raise awareness concerning the importance of plans and to provide know-how concerning their formulation.

BCP status(2016)

Existing BCP

020

Dedicated oﬃce areas
Within dedicated oﬃce area
Air conditioning

Lighting

Suspend perimeter
air conditioning only

Planning to Revise
Existing
BCP
60

40

27%

Overall（2,045）

No BCP,
but Planningin Progress

27%

No BCP &No Plans（%）
to Make BCP 100

80

27%

19%

〈By industry〉
51%

Financial/Insurance（154）

Power supply on standard oﬃce ﬂoors during power outages

Lighting
in shared areas*Top 8 of 17 items

2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016

29%
26%

12%

28%

9%

Non-manufacturing（1,393）

24%

21%

Manufacturing
（475）

26%

27%

28%

19%

27%

26%

27%

20%

〈By capitalization〉
Japanese Company（1,763）31%

Foreign Company
（254）

28%

25%

17%

Content of BCP ※ Multiple answers allowed. ※ Total number of responding ﬁrms is counted as 100.
（%）
100

2016（1,081）

80
60
40

93%

89%

66%

65%

20

Sinks
* Hot watersuspended13

Toilet water

Elevator operation* Staged operation following the completionof safety checks by staﬀ, when S-wave earthquake
controlled operation has been enacted

For server room

Expanded
power source

Air conditioning （50VA/m2）

Oﬃce equipment
outlet power source（45VA/m2）（total 95VA/m2）

58%

54%

Evacuation
Procedures

Securing
Communications

40%

39%

32%

Establishmentof a Backup
Oﬃce

Coordination
with the Building
Management
Company

UPS(Uninterruptible
Power Supply)

0
Procedures toConﬁrm
Employee
SafetyEmergency
Supplies/
Provisions for
Employees

Procedures for
Employees
who canʼt
Return Home

Information
SystemBackup
Procedures

14

2｜Hardware Earthquake Countermeasures

2-8

Following the countermeasures, the following long-period earthquake motion was detected and the eﬀects of the countermeasures wereveriﬁed. In all cases, the elevators were stopped safely after detection (no passengers were trapped inside) and operation was restoredautomatically.

Earthquake countermeasures for elevators

Mori Building has developed original earthquake-resistance systems for the elevators that are essential for movement in high-risebuildings.

Safe stop followed by rapid restoration of service
So that elevators can be restarted quickly, we have constructed a system of cooperation with the elevator maintenance companies sothat a minimum of one elevator in each bank can be returned to service quickly in the event of an emergency. When the Great East
Japan Earthquake struck, as soon as the earthquake was detected all elevators were controlled to a safe stop on the nearest ﬂoor. No
persons were trapped in the elevators, and users were all guided to safety. In Roppongi Hills Mori Tower, the ﬁrst elevator returned toservice two hours after the earthquake, and at least one elevator in each bank was returned to service within 3.5 hours.
●

Flow of elevator return to service at Roppongi Hills Mori Tower following the Great East Japan Earthquake
14:00

15:00
14:46

16:00

15:10 15:15

Earthquake occurs.
Controlled operation
automatically stops
elevators.

17:00

15:48

16:55

Wait for 30
minutes due tolevel 6 aftershocks.

Elevator company
personnel arrive at
Roppongi Hills.

18:00
18:04

At least one elevatorin each bank returned
to service.

First elevator returned
to service.

Safety inspection
started.

July 16, 2007

Niigata Prefecture Chuetsu Earthquake
Seismic intensity 7 (M6.8) Minato City: Seismic intensity 2

May 8, 2008

Ibaraki Prefecture Earthquake
Seismic intensity 5- (M6.7) Minato City: Seismic intensity 3

28 elevators detected long-period earthquake
movement, stopped safely, and returned to service
automatically. No passengers were trapped inside.

June 14, 2008 Iwate-Miyagi Nairiku Earthquake
Seismic intensity 6+ (M7.2) Minato City: Seismic intensity 2(For reference) Original ﬁre escape measures for super high-ris e buildings
Installation of intermediate refuge ﬂoors at the Shanghai World Financial Center super high-rise
Although ﬁre escape stairways are eﬀective means of vertical escape in a super high-rise building, it is diﬃcult even for someone in good shape
to descend all at once to the bottom ﬂoor, and under Chinese law a "refuge ﬂoor" must be installed every 15 ﬂoors as an emergency evacuationsite where people can stay safely for an extended period of time.
The Shanghai World Financial Center, a 492 m super high-rise with 101 ﬂoors, has seven intermediate refuge ﬂoors installed ‒ one for every 12
ﬂoors, shortening the evacuation distance in case of disaster. At the same time, a pressurizing smoke-control system has also been installed toprevent smoke from entering the refuge ﬂoors.
An evacuation plan using the elevators has also been introduced, and evacuation simulation software was used to verify the evacuation
instructions. An emergency power supply was also prepared for the elevators that can be used for evacuation, and improvements for evacuation
were enacted together with improvements to elevator operation and other software elements.

No further stops on or after 3/11
(except for controlled automatic stops due toaftershocks).

World's ﬁrst elevator control for long-period earthquake motion
At the time of the Niigata Chuetsu Earthquake in October 2004, emergency stops occurred in elevators in Tokyo super high-rises,
located far from the epicenter, due to long-period earthquake motion. Some parts of the elevator shafts were damaged and otherproblems occurred.
Based on this information, Mori Building studied improvements together with elevator manufacturers, and created the world's ﬁrst
elevator control system for long-period earthquake motion in the Roppongi Hills Mori Tower using a combination of two originallong-period earthquake motion detection systems. We also took steps to prevent ropes in the elevator shafts from becoming caught,
and strive to ensure that the elevators are able to move safely.
These long-period earthquake motion countermeasures are also being applied at other Mori buildings where there are concerns of
the same eﬀects.

Pendulum system

Pendulum system

Long-period earthquake motion
spectrum method
Speed

Point B
Point A●

Measures to prevent rope catching

Brackets and other guards are installed on
projections inside the elevator shafts
where the ropes could become caught.
（Plan view of inside of elevator shaft）

Time
At normal times
Initial movement
AnalysisStrength

This component (peak)of long-period earthquake
motion is detected.

Beforeimprovement（Rope）

Seven intermediate refuge ﬂoors

Simulation of evacuee movement by stairs to the refuge ﬂoors

Original evacuation simulation system for ﬁre evacuations of super high-rise buildings* Acquired patent in 2013

Mori Building has developed a ﬁre evacuation
simulation system for super high-rise buildings incooperation with Kozo Keikaku Engineering Inc. Thissystem allows more eﬀective studies of evacuationplans in case of ﬁre in a super high-rise building withconsideration for the diﬀerent characteristics ofindividual evacuees.
The system creates a highly detailed model ofindividual evacuee behavior and movement
characteristics (for example, those who are less able toevacuate such as disabled and elderly people), andsequentially simulates the decision-making andmovement of each individual according tocircumstances during the evacuation, in order toproduce a simulation that is a better match with reality.

●

Simulation image of evacuation in Toranomon Hills

Whole ﬂoor view

Close up image of elevators

Close up image of stairs

Evacuation
towards elevators

Evacuation
towards stairs

Toranomon Hills: First* acquisition of certiﬁcation for mixed-use super high-rise buildings.
Operation of evacuation plans making use of emergency elevators
When earthquake
occursAfter an earthquake, the pendulum which
resonates due to the motion of the building
contacts the electrical contacts at Point A
and Point B, allowing detection of long-period earthquake motion.

15

Spectrum component
analysis

PeriodComponent analysis is performed of theinitial movement immediately following anearthquake in order to detect long-period
earthquake motion

After
improvement

We have established an evacuation plan at Toranomon Hills, certiﬁed by the Tokyo Fire Department, that makes use of emergency
elevators to ensure a means for evacuating people with diﬃculty walking in the event of ﬁre.
With the certiﬁcation, we are able to have senior citizens, people with disabilities, or other people who have diﬃculty walking wait
temporarily in evacuation areas until the arrival of ﬁreﬁghting teams, then have Security Control Center staﬀ operate emergency elevators
to help such people evacuate.
* Based upon the "Evacuation safety measures for persons with diﬃculties walking, etc. in high-rise buildings, etc. " launched by the Tokyo Fire Department in October 2013.
Toranomon Hills was the ﬁrst mixed-use super high-rise building to acquire certiﬁcation. Toranomon Hills has also acquired the Fire Safety Building Certiﬁcate (February 2016).

16

2｜Hardware Earthquake Countermeasures

Mori Building's main earthquake countermeasure initiatives
Our company has enacted a variety of measures as part of our mission to create safe, secure, disaster resistant cities, including physicalmeasures for buildings and organizational measures involving operations. We further strengthened these measures following The Great
Hanshin-Awaji Earthquake of 1995, and have worked toward further improvement of our disaster readiness capabilities while continually
undertaking revisions under changes in social conditions and technological innovations and through varied training.

Overview of Disaster Readiness Plan (Preface)＜January 17, 1995: The Great Hanshin-Awaji Earthquake＞
1995

Began active adoption of seismic mitigation and seismic isolation systems

At Mori Building, we consider it our social responsibility to carry out urban planning which can serve

Research and development based on seismograph data in major buildings

as centers of disaster readiness for the surrounding areas, based on the concept of "turning cities from

Aug. Launched disaster response organization and formulated earthquake emergency response plans
Launched disaster readiness oﬃce
・Constructed earthquake disaster system involving all Mori Building employees, including preparation of supplies by employees.
Distributed emergency supplies and foods to major buildings.

1996

Jan. Began Mori Building Comprehensive Earthquake Training for all Mori Building employees

2003

Apr. Opened Roppongi Hills "place of refuge"・Prepared 10,000-meal food stockpile (about 200,000 meals for Mori Building overall) for residents and visitors (stranded persons)・Installation of or own city (medium-pressure) gas-burning energy plant, etc.

places to ﬂee into places of refuge". We have carried out a broad range of programs aimed at building
safe, secure, and disaster-resistant cities, not only from the hardware side of the buildings, but on thehuman and organization side as well.
Disaster readiness and other crisis management plans now occupy an extremely important place inevaluations of corporate value. We hope that all employees will maintain a high awareness of disasterreadiness on a daily basis, and will prepare for the worst eventualities in a way that will ensure the best

2004

Jan. Began Roppongi Hills Earthquake Training for oﬃce workers residents, etc.

2005

Jun. Began placement of AEDs (automated external deﬁbrillators) in key facilities

response.

Oct. Full-scale operation of long-period earthquake vibration detection system in Roppongi Hills Mori Tower
2008

Apr. Full-scale operation of our original Disaster Portal Site information collection system

The term "Business Continuity Plan" (BCP) is one that is often heard these days, and it is now essential

2010

Apr. Coordinated suspension of elevator operation and start of in-building broadcasts,
making use of the emergency earthquake warning system

2010 Dec. Completed earthquake resistance renovations for all operating buildings constructed prior to enactmentof new earthquake resistance standards (1981)＜March 11, 2011: The Great East Japan Earthquake ＞
2012

Feb. Held ﬁrst earthquake workshop for residents at Roppongi Hills
Mar.

to construct systems which focus on restoring building function rapidly following a disaster, andwhich support the continued business and lives of building tenants and residents.
This overview of the disaster readiness plan will serve as the basis for disaster readiness at ourcompany. We hope that through further study and training in the future, it will contribute to evensafer and more secure urban planning in the future.

Concluded cooperative agreement with Minato City, Tokyo on sheltering stranded people during disasters (Roppongi Hills)
Construction of original disaster information provision system making use of area-restricted broadcasts

Jul. Construction of backup Disaster Response Headquarters in ARK Hills
Concluded a cooperative agreement with Minato City, Tokyo on sheltering stranded people during disasters(ARK Hills Sengokuyama Mori Tower).

Basic Disaster Readiness Policy

Aug. Adopted city (medium-pressure) gas-based emergency power generation system for business continuity
at ARK Hills Sengokuyama Mori Tower

Sep.

Held ﬁrst training for sheltering stranded persons as part of Mori Building Comprehensive Earthquake Training

1. Top priority shall be given to ensuring the lives and safety of tenants, residents, and visitors who use

Published "Mori Building Comprehensive Earthquake Protection" as a way to let society beneﬁt from our know-how
on the creation of safe, secure cities

the buildings and facilities that are owned or managed and operated by our company, as well as the

Adoption of bicycles for disaster readinesspeople in nearby areas and our company's employees.

Held "Social Disaster Readiness Training" together with Yahoo! Japan, Twitter Japan, and J-WAVE

2. Respond quickly in the event of an earthquake in order to minimize damage.

2013 Mar. Released Great East Japan Earthquake seismograph data and analysis results from Mori Building properties academic bodies
Aug. Began operation of e-Daps post-earthquake building damage estimation system at Roppongi Hills
2014 Mar. Construction of original wireless system making use of general commercial wireless as a new meansof communication in a disaster
Apr. Conclusion of memorandum of understanding with NHK concerning emergency and disaster broadcast earthquake
announcements in Mori Building-managed properties

3. Maintain the functions that support continued business operations of tenants and continued
everyday lives of residents.
4. Cooperate with the local, Tokyo, and Minato City police and ﬁre departments, and other related
government organizations, in order to contribute to society.

Aug. Held the ﬁrst "Survive the Night" nighttime post-disaster living experience event at Roppongi Hills
as an awareness-raising activity for residents
Began distributing original "Emergency Kit" disaster readiness supply kits to residents
Oct. Held ﬁrst "Overnight Stay in Mori Building" awareness-raising activity in ARK Hills for tenant companies
2015

17

Oct. Participated in conference to create measures for handling people congregating around Roppongi Station

2016

Jul. Concluded a Residentsʼ Communication Agreement with Minato City, Tokyo (Mori Building).

2017

May Concluded a cooperative agreement with Shibuya City, Tokyo on sheltering stranded people during disasters(Omotesando Hills).

(This overview and basic policy are distributed to all Mori Building employees.)18

3｜Software Earthquake Countermeasures

3-1

Disaster readiness organization system that can provide a rapid initial responseeven at night and on holidays

3-2

Mori Building is committed to helping local residents maintain their daily lives and businesses continue operating to the extent possible after adisaster occurs. All 1,400 employees in the company are well prepared to swiftly implement, whenever necessary, our disaster-response systemfor promptly engaging in recovery activities.
Non-working hours, including nighttime and holidays, account for about three-quarters of the total hours in a year. If a disaster strikes duringoﬀ-hours, the prompt implementation of emergency eﬀorts is crucial. Mori Building, at its own initiative, has established a range of
emergency-response measures, including providing several housing units for disaster readiness for staﬀ within a 2.5-km radius of our businessfacilities. In addition, specialized training is organized on a regular basis for these employees. We also have adopted a disaster readiness nightwatch system.
●

Shift to disaster response organization

Automatically shift
when an earthquake withan intensity of 5 or more
(on the Japanese scale)occurs in Tokyo 23 cities

Normal conditions
President

When an earthquake occurs
Disaster Response
Headquarters Secretariat(Executive Oﬃce)

Environmental
Promotion Committee

Safety Council

Disaster
Readiness Oﬃce

Oﬃce

Continual training of disaster-readiness personnel

In addition to the general disaster-readiness training that is conducted throughout the company twice each year, disaster-response personnel also
participate eight times a year in the monthly disaster-readiness training, and are working continuously to maintain their skills. One uniquecharacteristic of our company is that all employees are required to obtain ﬁrst aid skills certiﬁcation.
●

Schedule of earthquake preparedness training
TargetMori Building comprehensive
earthquake preparedness training

All company employees

Roppongi Hills earthquake
prevention training

Roppongi Hills
Neighborhood Association and tenant

Disaster Prevention Day
training Company

Members (Employees) of administrative(management) departments

Residence Div. Training

Disaster prevention company
residence residents

Personnel safety
veriﬁcation training

All company employees

On-foot training

All company employeesFirst-aid training

All company employees(attended once every three years)

Jan.

Feb.

All managers take turns staying overnight at Roppongi Hills to support our disaster response organization as well as ensure our preparedness forﬁrst-response measures such as information gathering and prompt decision-making.

Mori Building provides disaster-response employees with company-owned accommodations within a 2.5-km radius of Roppongi Hills to enable
them to respond quickly in the event of an emergency. About 100 employees who live in the area have been appointed as disaster-response
personnel charged with providing ﬁrst-response assistance if an emergency occurs.

Mori Building
disaster preparedness drill

First aid drill

中野区
Nakano● System of disaster response personnel
in case of emergency

文京区
BunkyoLoop Road 7

19

Taito

墨田区
Sumida

新宿区

Disaster readiness night watch(on station 365 days a year)
千代田区
Shinjuku

ChiyodaRoppongi Hills

江戸川区

中央区

Edogawa

江東区
Koto

Shibuya

多摩区

台東区

Chuo

Setagaya

Jul.

Aug.

Sept.

Oct.

Nov.

Dec.

Mori Building disaster
preparedness drill (Headquarters)

Each year, we organize a commute-by-walking drill for all employees to prepare them for the
possibility of public transportation being disrupted. If a disaster strikes, employees may berequired to report to work and assist in emergency-response eﬀorts, or to leave work and help
look for family members not accounted for. The drill is designed to help employees remain calmand safe in emergencies and choose appropriate walking routes and/or emergency shelters.
"Mori Building Emergency Route Map
for Time of Disaster"Seven members of the Building Management Department reside in a house near Roppongi Hills. These employees remain on standby to respondto emergency situations and set up our disaster response organization together with emergency night-duty personnel.

世田谷区

Jun.

Disaster-readiness personnel training

Accommodation for Building Management Department personnel

渋谷区

May

Commute-by-walking drill

Staﬀ housing units for disaster readiness

10 km radius

Apr.

Company
Residence Div.

Housing Div.

Commercial
Facilities Div.

RescueActivities Div.

Building
Recovery Div.

Oﬃce Sales Div.

Urban Planningand Development Div.

Residential Dept.

RetailDevelopment Dept.

Property
Management Dept.

Building
Management Dept.

Oﬃce
Business Dept.

Disaster readiness night watch system

Employees living within a 10 km radius
杉並区(approximately 500
staﬀ)
SuginamiMar.

2.5 km radius

目黒区
MeguroIn September 2016, Mori Building won an award presented by the chief of the Tokyo Fire Department for
distinguished ﬁrst-aid provision in a local area. Mori Building was the ﬁrst property developer to win thisaward, which recognizes the companyʼs relentless eﬀorts to ensure its ﬁrst-response capabilities.
Businesses and organizations that actively implement ﬁrst-response initiatives in their local communities
are nominated by 81 ﬁre stations in Tokyo, and winners are chosen for implementing the most eﬀective
initiatives and serving as role models. Winning this award is a testament to our commitment todeveloping “cities to escape to” in both tangible and intangible forms, as well as our innovation,
continuity, training and development programs, and contributions to our local communities.
〈Rationale for award:〉●●

港区
MinatoFirst real estate developer awarded for ﬁrst-aid provision

Disaster-readinesspersonnel housing
Total: Approx. 100 staﬀ

●
●

●

品川区
ShinagawaMori Building has participated in a life-saving training course for the past 16 years, with 95% of its employees having completed basic
life-saving training.
Mori Building independently conducts ﬁrst-aid training and has 72 employees trained as ﬁrst responders and also qualiﬁed as life-saving
trainers.
Mori Building has 66 AEDs installed in its properties, available whenever needed.
Mori Building utilizes its own equipment for disaster drills that it jointly organizes with nearby residentsʼ associations, and the company
promotes ﬁrst-aid skills in its local communities.
Mori Building has entered into agreements with local authorities to support people stranded in emergencies.

20

3｜Software Earthquake Countermeasures

3-3

Many of our properties are located within walking distance of Roppongi Hills, which possesses strong continuity support capabilities.
Therefore, Roppongi Hills has been positioned as the disaster prevention core hub, and we support the daily life and business continuity of
our customers during emergencies through a network that consists of hubs such as ARK Hills and Toranomon Hills and buildings withpermanent management staﬀ.

Akasaka Sta.

Akasaka Tameike
Tower

Omote-sando Sta.

i
ka

Rin

Tameike-sanno Sta.

93.8% were satisﬁed.

Kasumigaseki Sta.

2km●

Property management technologies

6.7%

Somewhatsatisﬁed

Very satisﬁed

37.5%

Neither

56.3%

93.3% were satisﬁed.

53.3%

Very satisﬁed

40.0%

Tranomon Sta.

e

Lin

Sot

Tokyo Teleport Sta.

obo

ARK Hills Front Tower
e

om

am

rik
Yu

ARK
Mori Building

1km

ori

Ave

.
●

Toranomon Hills
Mori Tower

ARK Towers

dorpalette town

Aomi Sta.

Ro

i-

ng

o
pp

ARK Hills

ARK Hills
South Tower.

ve

Roppongi
ARK Hills
First Building Sengokuyama
Roppongi-itchome Sta.
Mori Tower

iA

r
do

Roppongi Sta.

Kamiyacho Stn.

Roppongi Hills

Tok
y

●

iya

Line

Atago Green Hills
Mori Tower●●

Resident"Although some lights were out and the numbers of elevators in service reduced during the period of power conservation after the earthquake, I
was not inconvenienced. Longer waits for the elevator meant more chances to talk with the other residents, and actually helped improve ourcommunication."

Tokyo M

Daimon Sta.

Azabu-juban Sta.

Motoazabu Hills

Owner of a property managed by Mori Building"Among the several properties which I own, the contact I received from Mori Building was especially fast and accurate, and this was very
reassuring. I hope they will continue to provide the same level of service."

Onarimon Sta.

Holland Hills Mori Tower

Business tenant (General Aﬀairs Division Manager, foreign-owned ﬁnance company)"Although Roppongi Hills was not subject to power restrictions, by increasing the excess power (from the power generation system) during timesof limited power, Through Mori Building, we were able to supply power to TEPCO, and were able to take active steps for contributing to society."

Atago Green Hills
Forest Tower

Atago Green Hills
Hib

Business tenant (oﬃcial, foreign-owned ﬁnance company)"Although all of the Mori Building staﬀ were themselves in trying circumstances, they all showed the top level of professionalism and made every
eﬀort for the safety of our employees and the continuity of our business. The Mori Building staﬀ are on the top global level, and we are grateful tothem."

Shimbashi Sta.

etro Nan

Roppongi Hills
Residence C

Roppongi Hills
Mori Toweretroboku LineoM

Other comments received from business tenants and residents of our oﬃce buildings at the time of the earthquake

Uchisaiwaicho Sta.

ri-d

e.

da

Lin
Aoyama-itchome
Sta.
e

i Av

iyo

6.2%

Somewhatsatisﬁediya-Ch

Neither

Response to earthquake

Hibiya Sta.

Kasumigaseki Sta.

Kokkaigijido-mae Sta.

Hib

tro

●

3km

Omotesando Hills
MeTo
Ha k yonz M
o m etTo
on ro
Gi k yo
Lin
nz M
e
aL e
ine troyo

Customer satisfaction with the Mori Building management system

The results from a survey of customer satisfaction following the Great East Japan Earthquake related to the buildings managed by Mori
Building showed that the accumulation of eﬀorts made on a daily basis was proving eﬀective and that our response on the day of theearthquake was highly rated.

The Prudential Tower

Akasaka-mitsuke Sta.

Meiji-jingumae Sta.

To
k

3-4

Area management‒based disaster prevention network with Roppongi Hills as the hub

Mori Building's highly-regarded ﬁreﬁghting team
Hub building

Akabanebashi Sta.

Shibakoen Sta.

Building withpermanentmanagement staﬀ

※Reference: 2017 Mori Building Handy Map

Disaster-readiness center functions staﬀed by disaster management professionals
A disaster-readiness center has been established to serve as the center of activities at each building in the above network in case ofdisaster. This center is staﬀed full-time, and works daily to construct a comprehensive disaster-readiness system in cooperation withthe employees of specialist management, facility, and security companies, so that the members can function as disastermanagement professionals at times of emergency.

In order to smoothly carry out initial response and emergency measures in a disaster and to ensure the safety of users of our facilities, weare forming in-house ﬁreﬁghting organizations in each of our facilities, in accordance with the Fire Service Law.
When ﬁres, earthquakes, or other disasters occur, in-house ﬁre-ﬁghting teams are expected to perform initial reporting, contact, andﬁreﬁghting, provide prompt evacuation guidance, and so on, to quickly minimize damage. Our company performs regular education andtraining centered on front-line staﬀ such as the Security Control Center and residence front desks, while also coordinating with staﬀ fromsecurity and facilities partner companies. We also participate actively in the in-house ﬁreﬁghting activity examination committees heldby local ﬁre stations, and work to enhance our skills. Every year several of our in-house ﬁreﬁghting teams in each jurisdiction take part inthese examinations, with each achieving an excellent track record.

Our initiatives involving safety and security have earned high regard, including letters of appreciation and commendations from theTokyo Fire Department, for making major contributions to communities.

21

22

3｜Software Earthquake Countermeasures

3-5

3-6

Disaster supplies and wells for use in disasters

In the case of disasters, such as earthquakes, ﬂooding, and violent winds, it is necessary to not only have developed equipment andmaterials‒related measures, such as those concerning building safety performance and physical stores, but also to accurately gather informationand tie this to appropriate recovery activities in order to ensure the safety of visitors, tenants, employees, and other parties. We have introduced
and operate the Disaster Portal Site, an independently developed (in-house) information gathering system to quickly ascertain the state ofdamage caused to facilities by various events ranging from earthquakes to ﬂoods, strong winds, and acts of terrorism and to quickly launchbusiness recovery measures. The system makes it possible to ascertain and grasp information on various issues, including the state of damage(damage to the various buildings, ﬁres, power outages, elevator problems, etc.) and the safety of front-line administrative staﬀ at a single glance
and in real time during an emergency.

The largest scale stock of private emergency disaster supplies
Following the Great Hanshin Awaji Earthquake, we started to establish emergency store depots (warehouses) andstoring goods in the case of earthquakes. At the current time, we have food stores equivalent to about 270,000
meals (of which about 100,000 are at Roppongi Hills), one of the largest amounts in the private sector. We also
stock various types of items required during disasters, such as blankets, medical supplies, mechanical equipment,
and simple (portable) toilets, at each facility.
These preparations include a total of about 100,000 meals for area visitors (stranded people), consisting of 9 meals
per person (3 meals per day for 3 days) and ensuring daily nutrition of about 1,600 to 1,700 Kcal per person.
We revise the content of the stockpiles as necessary, for example purchasing aluminum blankets (cold-resistant,heat-retaining sheets) after the Great East Japan Earthquake. Recently, we have been working to prepare special
stockpiles for small children, senior citizens, and persons with food allergies.
【Primary supplies】◇Food:*270,000 meals, for about 100,000 persons
Water, canned foods, crackers, instant rice, retort pouch meals, food bars, other◇Stored items：
Blankets, aluminum blankets, pharmaceuticals, air mattresses, portable toilets, sanitary napkins, diapers,
dust masks, AEDs, stretchers, generators, hydraulic jacks, shovels, pickaxes, tarps, plywood,
megaphones, plastic tanks, ﬂashlights, radios, other

Independently-developed information gathering system “Disaster Portal Site”

Distribution of disaster supplies
after the Great East Japan Earthquake【Intended recipients 】
Residential tenants,
residents, area visitors(stranded persons), local
neighborhood associations,
Mori Building employees,
partner companies, etc.
Roppongi Hills emergency supply
warehouse"Emergency Kit" to aid residents' peace of mind
We provide residents with our own original Emergency Kits, These containselect supplies needed for living securely at home for about a week
following a disaster that has a major impact on daily living. Each kit
includes an instruction manual in English and Japanese for easy use byforeigners as well. We also hold workshops oﬀering hands-on experience
using the kits, and work to increase residents' disaster readiness awarenessand their self-help and at-home refuge capabilities. We also assist withpurchases of additional items for the kits, enabling customization to every
family's needs.

LED light, lantern,
portable toilet (30 bags),
shampoo towels (30 sheets),
body towels (24 sheets),
water tank (10ℓ),
bandages,
gloves,duct tape,waterproof bag,carrying cart

Bicycles for emergencies (Survival City Bikes)
Immediately after the Great East Japan Earthquake, many roads in the Tokyo metropolitan area where overwhelmed with people and cars, making
them virtually impassable. Bicycles were widely used as a highly eﬀective means of transportation in the aftermath of the disaster, so Mori Building
has prepared mountain bikes modiﬁed for emergency use. These bicycles will help expedite ﬁrst-response eﬀorts, including patrolling properties
and surrounding areas and gathering vital information from ward oﬃces.

Key Features of Emergency-use Bicycles(1)Large (29-inch) wheels
Larger wheels increase the ability to ride over uneven surfaces and maintain stabilizing
contact with road surfaces.
(2) Easy tire repairs
Mountain bike tires are highly resistant to punctures, but if one occurs the inner tube can bechanged in about 5 minutes.
(3) High mobility
The bikes are equipped with disc brakes for superior braking and 30-speed gears fornegotiating hills and rainy conditions. Weighing just about 14 kg, they are also light enoughto be carried over obstacles when necessary.

Voluntary construction of disaster wells
We have voluntarily constructeddisaster wells in a total of 17 locations at
the major facilities which our company
manages. At time of disaster, these canbe used to supply water for domestic
use to the facilities where they are
installed and the surrounding
communities.
23

Suspension fork

29-inch wheels

30-speed gears

Disc brakes

Model name: Trek X-caliber【Facilities where located】
Roppongi Hills (2 locations), Toranomon Hills, Omotesando Hills,
ARK Hills, ARK Hills South Tower, ARK Hills Forest Tower, ARK Hills
Sengokuyama Mori Tower, ARK Forest Terrace, Holland Hills,
Atago Green Hills, Motoazabu Hills, Hirakawacho Mori Tower,
Akasaka Tameike Tower, Koraku Mori Building, Toranomon 37 Mori
Building, Roppongi Residences (company housing)

Disaster well
(Roppongi Hills)

Water release training

3-7

Reinforcing soft measures ̶New measures following the Great East Japan Earthquake (3)Emergency information service systems for visitors and residents
Based on lessons learned from the Great East Japan Earthquake, we have developed unique emergency information service systems for various
target groups and have made them available at Roppongi Hills since 2011. These area-speciﬁc systems provide information in a timely andeﬀective manner to occupants of our residential properties as well as visitors and people stranded at the properties. The information is
speciﬁcally prepared for these designated areas, so it is very useful when a disaster strikes. Mori Building entered into a Residentsʼ
Communication Agreement with Minato City, Tokyo, in July 2016, ensuring our access to earthquake, heavy rain, and other disaster information
provided by Minato City via mobile devices and computers as well as monitors provided in our buildings and TVs in residential properties. The
service is being extended sequentially to Roppongi Hills oﬃce blocks and Toranomon Hills.

【Area broadcasting systems】【Support Web for Stranded People】【Residence community vision】

Target:Visitors and people stranded at our
properties
Method:Temporarily operated monitors
Content:
Information from local governments, e.g.
Minato City, and information regarding
crime prevention (police department), traﬃc,Mori Building properties, etc.

Target:Visitors and people stranded at our
properties
Method:Smartphones, computers, etc.
Content:
Information from local governments, e.g.
Minato City, and information regarding
crime prevention (police department), traﬃc,Mori Building properties, including ITV feeds
from cameras, etc.

Target:Residents
Method:TVs in residential units
Content:
Concierge information (notices to occupants),
information from local governments, e.g.
Minato City, and information regarding crime
prevention (police department), traﬃc,weather, and Mori Building properties,
including emergency news24

3｜Software Earthquake Countermeasures

3-8

Multi-layering of communication methods in a disaster:Construction of an original wireless system making use of general commercial wireless
We have acquired a general commercial wireless* license from the Kanto Bureau of Telecommunications, Ministry of Internal Aﬀairs andCommunications, and have constructed an original digital wireless system. Since 2014, we have been rolling out a system for large-scale facilities
that we envision as sheltering people stranded by disasters. General commercial wireless is eﬀective as a means of communication that is
resistant to congestion, even under increased communications load following a large-scale disaster. We use the system as a means of
information transmission, both within facilities and connecting the Disaster Response Headquarters (Roppongi Hills) with individual facilities. In
addition, by connecting through FWA (Fixed Wireless Access), we are able to communicate at once with all personnel who have transceivers.
* Unlike simple wireless in which limited frequencies are shared, general commercial wireless is able to make exclusive use of multiple digital frequencies allotted over a limited area,
eliminating worries over congestion even under increased communications load following a large-scale disaster.

Generalcommercial
wireless
Transceiver

Omotesando Hills

ARK Mori
Building

Since the Great East Japan Earthquake, the limitations of public assistance in times of large-scale, wide-ranging disasters have become apparent,
reaﬃrming the importance of self-reliance and cooperative assistance.
In addition to strengthening collaboration with government bodies, our company holds training and workshops for area residents, oﬃce workers,
and store staﬀ, and creates opportunities for community bonding to foster self-reliance and cooperative assistance. We are also working tostrengthen collaboration with concerned parties in our neighborhoods to improve overall area disaster readiness capabilities.

Roppongi Hills Neighborhood Association ‒ Increasing awareness of disaster readiness in the local community
Roppongi Hills is home to a deeply rooted neighborhood association that comprises a diverse range of parties including oﬃce operators, shop
staﬀ, and others in addition to approximately 800 households. This association has as its primary goals "safety and security, disaster-readiness, andcrime prevention", and has carried out a broad range of disaster-readiness activities in the local community.
The Great East Japan Earthquake further strengthened the community bonds and heightened awareness of the needs for self-reliance andcooperation. In February 2012, upon request from the residents of Roppongi Hills Residence, Mori Building together with Minato City and the
Azabu Fire Department conducted a disaster-readiness exercise. A total of 100 people, including foreign residents, participated in the exercise,
which raised disaster-readiness awareness and was also an opportunity to reinforce community bonds.

Relay antenna

Toranomon Hills
Mori Tower
Roppongi Hills
Mori Tower

Improving overall area disaster readiness capabilities through collaboration
with government organizations, residents, neighborhoods, and other parties

FWA wireless
FWA antenna

Palette Town
（Odaiba）

Emergency kits in elevators
To help people trapped in elevators during an earthquake or power outage, we provide emergency kits* in cabinets inside the elevators onproperties owned and/or managed by Mori Building. Some 650 elevators (including passenger, emergency, and service elevators) in our oﬃce,
commercial, and residential properties have been provisioned.
Emergency kit:
･Portable toilet･Wet wipes･5 bottles of water･LED ﬂashlight･Thermal blanket, etc.

Disaster-readiness exercise

Earthquake exercise conducted each year jointly by theneighborhood association and Mori Building

Furthermore, through the Roppongi Hills Neighborhood
Association, we conduct earthquake preparedness training incollaboration with Mori Building; hold events, including the
Roppongi Clean-up, which involves picking up trash in the
Roppongi area, and seasonal events such as a New Yearʼs event,spring festival, and Obon festival, as contributions to the local
community, and strive to develop and foster the local
community.
Roppongi Clean-up

Bon dance festival

Awareness-raising activities for oﬃce workers and store staﬀ
Image of contents in emergency kit

In residence elevator

In oﬃce elevator

Creation of a system for sheltering stranded people at large-scale facilities
Our company is readying a system for sheltering as many as 10,000 stranded people* at our large-scale facilities. In addition, at Roppongi Hills(March 2012) and Toranomon Hills (June 2014), we concluded a cooperative agreement with Minato City, Tokyo on sheltering stranded people
during disasters, as we work under public-private partnerships to create safe, secure, disaster resistant cities that will also serve as centers fordisaster readiness in their surrounding regions.
* 5,000 people at Roppongi Hills, 3,600 people at Toranomon Hills, and additional people at ARK Hills Sengokuyama Mori Tower, Omotesando Hills, etc.

Excerpt/summary of the agreement
1) Provision for temporary evacuation sites for stranded people
2) Provision for food supplies, drinking water, etc.
for stranded people
3) Provision for tools to guide stranded people to evacuate
4) Provision for guidance and related personnel
to assist people stranded at train stations, etc.

25

Among our activities to raise awareness, we create and distribute a "Earthquake
Countermeasures Handbook" collecting information on the preparations for
emergencies that we request oﬃce and retail store tenant companies to undertake.
Content of the "Earthquake Countermeasures Handbook"・Restrictions on all staﬀ returning home at once ・Enforcement of ﬁreﬁghting plans
・Implementation of safety veriﬁcation for employees and their families
・Ensuring safety in oﬃces and shops ・Preparation of emergency supplies
Requiring employees to shelter in oﬃces is a likely measure for dealing with persons
unable to return home. Accordingly, in 2014 we implemented the "Overnight Stay in
Mori Building" project in ARK Hills. Through the experience of overnight stays in theirbuildings, companies were able to check the practicality of their manuals in terms ofactions, supplies, and so on, and improve their self-reliance and cooperative
assistance skills through presentations by experts.

Earthquake Countermeasures Handbook(for oﬃce building tenants)

Participation in the conference to create measures for handling people congregating around Roppongi Station
During disasters, a large number of people congregate around Roppongi Station, including those stranded and unable to return home. Given therisk of impeded rescue activities, earthquakes, crowd accidents, and other secondary disasters, we participate as a member, along with Minato
City, ﬁreﬁghters, police, railway companies and other local companies, in a conference to create measures for handling people congregatingaround Roppongi Station, and otherwise cooperate in improving disaster readiness in the area.
26