ECTP 2009

Architectural Initiative to achieve Sustainable Society in Japan

ECTP CONFERENCE 2009

25 NOVEMBER 200925 NOVEMBER 2009BRUSSELS

Tatsuo Okamoto

TAKENAKA CORPORATION

ECTP 2009

■Key Issues for Sustainable Society in Japan

1

■Key Issues for Sustainable Society in Japan1 Reductions of Greenhouse Gas Emissions1.Reductions of Greenhouse Gas Emissions

2.Takenaka’s Sustainable Activities- Technologies and Works -

“ ”2-1 Concept of “Sustainable Works®”

2-2 Environmentally - friendly Usey y2-3 Environmentally - friendly Design2 4 E i t ll f i dl C t ti2-4 Environmentally - friendly Construction2-5 Ecological Systemg y

■For the future■For the future

ECTP 2009

■Key Issues for Sustainable Society in Japan

2

■Key Issues for Sustainable Society in Japan1 Reductions of Greenhouse Gas Emissions1.Reductions of Greenhouse Gas Emissions

2.Takenaka’s Sustainable Activities- Technologies and Works -

“ ”2-1 Concept of “Sustainable Works®”

2-2 Environmentally - friendly Usey y2-3 Environmentally - friendly Design2 4 E i t ll f i dl C t ti2-4 Environmentally - friendly Construction2-5 Ecological Systemg y

■For the future■For the future

ECTP 2009Paradigm Shift from Mass Consumption Society to Low-Carbon Society

3

25CO2 emission/person

USA20

Australia

15

SouthAfrica Germany Japan

Norway

10

15

China Romania

South Africa

MalaysiaSpain

5

10

Nigeria

India

Brazil

RomaniaMexico

0

5

0Source ：Pekka Huovila, The 2008 World Sustainable Building Conference

Dissipation of Japan’s advanced low-carbonization technology into the world through its achievements in i l d l i i d h

1 10 100 Per-capita GNI

environmental model cities and other cases.Source ：Shuzo Murakami, Building Research Institute

ECTP 2009Prime Minister Hatoyama’s Commitment - U.N. Summit 2009

4

Political situation of Japanese government

25% reduction of greenhouse gas emissions by 2020comparing to 1990 level

the U.N. Summit on Climate Change 2009.9.22

ECTP 2009Japan’s Energy Consumptions in Private, Industry,and Transportation Sectors

5

YEAR 1990=1

Consumption in industries stay at around the same levelsConsumption in industries stay at around the same levels.Private sector consumption continue to rise.

ECTP 2009CO2 Emissions in Japan’s Construction Industry 6

･World’s 4th CO2-generating country

Non-housing construction 5 6%Housing construction 5.2%

g g y(5%) ･World’s 9th CO2 emission per GDP(0 46 kg CO2/US$)

Housing operation

Non-housing construction 5.6%Building repair 1.3%

(0.46 kg CO2/US$)

329Mt-C

Housing operation Energy 12.5%

Non-housing operationenergy 11.4%

Other industry63.9%

Source: Architectural Institute of Japan, Global Environment CommitteeLife Cycle Assessment Sub-Committee

Japan’s CO2 emission estimate (1990)Japan s CO2 emission estimate (1990)

ECTP 2009Overview of Energy Consumptionin Japanese General Office Buildings

7

Air conditioning related：44%

5%

Air conditioning related：44%

31%9% Heat source

Water supplyPneumatic conveyance

Others：35%

21%

Pneumatic conveyanceHot water supplyLightingW ll tl t3%

9%

Wall outletsPower equipmentOthers

1%21%

Li hti l t d：21%

Survey by The Energy Conservation Center, Japan: Tenant buildings with the rentable ratio of over 60% d i d i h h

Lighting related：21%

and equipped with heat source systems

ECTP 2009

■Key Issues for Sustainable Society in Japan

8

■Key Issues for Sustainable Society in Japan1 Reductions of Greenhouse Gas Emissions1.Reductions of Greenhouse Gas Emissions

2.Takenaka’s Sustainable Activities- Technologies and Works -

“ ”2-1 Concept of “Sustainable Works®”

2-2 Environmentally - friendly Usey y2-3 Environmentally - friendly Design2 4 E i t ll f i dl C t ti2-4 Environmentally - friendly Construction2-5 Ecological Systemg y

■For the future■For the future

ECTP 2009Concept of “Sustainable Works®” 9

ECTP 2009

■Key Issues for Sustainable Society in Japan

10

■Key Issues for Sustainable Society in Japan1 Reductions of Greenhouse Gas Emissions1.Reductions of Greenhouse Gas Emissions

2.Takenaka’s Sustainable Activities- Technologies and Works -

“ ”2-1 Concept of “Sustainable Works®”

2-2 Environmentally - friendly Usey y2-3 Environmentally - friendly Design2 4 E i t ll f i dl C t ti2-4 Environmentally - friendly Construction2-5 Ecological Systemg y

■For the future■For the future

ECTP 2009

Integration of building and mechanical systems Utilization of perimeter environments and natural

Operating CO2 Reduction -Technology 11

g g y

Reduction of

penergy

STL

Reduction of loads by exterior wall

Harnessing of natural energy

STL

Dehumidificat-ion through exterior wall

Use of floor slabs

Double skin Exterior louvers

Air conditioning and lighting

Double skin Exterior louvers

Operation evaluation and new energyg g

utilizing building materials

U d dUnderground thermal storage

Commissioning technology

Biomass energy, lithium ion batteries, etc.

New energy solution

ECTP 2009

Building OutlineEnergy Commissioning and Improvement 12

Building Name Takenaka Corporation Tokyo Main Office

Completion Sep-2004Completion Sep-2004

Gross Floor Area 29,747㎡

㎡

Number of Floors 7 space

D i /B ild T k k C ti

Typical Floor Area 4,150㎡

Design/Build Takenaka Corporation

MJ/ 2MJ/ｍ2・year

2,000

1 500

・Turbo Refrigerator parameter tuning

・Enlargement of natural ventilation and ▲10%

1,500

1,000

500

g

night purge

・Promotion of Cool-biz and Warm-biz

Transition of Tokyo Main Office

2005 2006 2007 ［year］2008(mild cooling and heating)

・Installation of Individual Lighting SystemTransition of Tokyo Main Office Primary Energy consumption・Experimental Installation of LED Lighting

System

ECTP 2009Long-life Maintenance 13

Interior and exterior renewal:Highly durable paint

Tokyo Tower

Highly-durable paint7th recoating6th recoating5th recoatingg4th recoating3rd recoating2nd recoating1st recoatingCoating at construction

ECTP 2009

Restoration of the Main Hall of Toshodai-ji TempleLong-life Use & Renewal 14

Restoration of the Main Hall of Toshodai-ji Temple

Toshodaiji Temple was founded in 759 by Chinese priest Ganjin. About a quarter of a century after that the Kondo or Mail Hall was completed.

ECTP 2009Restoration History of Toshodai-ji Main Hall

Original8th c.

15ECTP 2009

Main Hall

AD700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000AD700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000

originalcompletion

GenrokuRepair

MeijiRepair

HeiseiRepair

BuneiRepair

1270 1693 4 1898 9 1998 2009780?

Repairat 17th c.

Elevated roofKnee bracing

Hanegi

1270 1693-4 1898-9 1998-2009780?

Repairat 19th c.

Knee bracing removed

Twofold HanegiRoof truss

Steel rod

ECTP 2009Why inward drift occurs? 16ECTP 2009

2.Unable to resist lateral force A&B1.Inward Lateral Force A&B resulted by deep overhang of Roof Weight

3.Column drift and capital block rotation occur

Drift and Rotation of

Lateral Lateral

Rotation of Column Capitals

Force A Force B

ECTP 2009

■Key Issues for Sustainable Society in Japan

17

■Key Issues for Sustainable Society in Japan1 Reductions of Greenhouse Gas Emissions1.Reductions of Greenhouse Gas Emissions

2.Takenaka’s Sustainable Activities- Technologies and Works -

“ ”2-1 Concept of “Sustainable Works®”

2-2 Environmentally - friendly Usey y2-3 Environmentally - friendly Design2 4 E i t ll f i dl C t ti2-4 Environmentally - friendly Construction2-5 Ecological Systemg y

■For the future■For the future

ECTP 2009 18Built Environment Assessment Tool in Japan

Comprehensive environmental performance assessment tools for buildings in the world

ECTP 2009CASBEEComprehensive Assessment System for Building Environmental Efficiency

19

BEE=1.2

ECTP 2009Labeling CASBEEComprehensive Assessment System for Building Environmental Efficiency

20

CASBEE Distribution Chart

Comprehensive Assessment System for Building Environmental Efficiency

BEE=3.0 BEE=1.5 BEE=1.0100

S A B+g Q

The Tokyo Main Office

fBui

ldin

g

【Labeling for BEE】S ：Excellent

BEE=4.9Distribution Range of Goal

The Tokyo Main Office

73

BEE=0.550

B-

Qua

lity

of

A ：Very GoodB+：GoodB-： Fairly poorAverage Value

C

nmen

t Q

B-： Fairly poorC ：poor

0

Env

iro Current Distribution Range

： CASBEE assessment results for

1005000

Environment Load of the Building L

16Building Contractors Society 2006 design and built projects (23companies, 591 projects)g

ECTP 2009Project : Comprehensive Sustainable Design 21ECTP 2009

Takenaka Corporation Tokyo Main OfficeTakenaka Corporation Tokyo Main Office

ECTP 2009Main Measurements of Sustainable architecture 22

Rooftop gardens Light wells Ice storage

Low-emission glass windows

Natural draft

Hybrid air yconditioning using natural wind

Rooftop solar heat ll ti d t

Low-temperature water th l t

Utilization of i tcollection ducts thermal storagerainwater

ECTP 2009

C i i f

Recycling resources 23

Cyclite : Recycling technology of concrete Corrugated Cardboard Duct

Cardboard

Aluminum sheet

Assemble

CycliteMounting

Eccentric rotor

I ll

Eccentric rotor

Concrete is broken up and reused as aggregate

Installment

ECTP 2009Lighting Design with Circadian Rhythm 24

Morning Daytime Evening

Work Begins Meeting Work EndsHigh

re a

nd

Lunch

tem

pera

tur

nanc

e

Low

Col

or t

illum

in

Stair and Office Office Conference Dining Offi Conference TiUnderground floorLow Stair and light wall

Office room

Office room

Conference room

Dining hall

Office room

Conference room

TimeUnderground floor and passage

ECTP 2009

■Key Issues for Sustainable Society in Japan

25

■Key Issues for Sustainable Society in Japan1 Reductions of Greenhouse Gas Emissions1.Reductions of Greenhouse Gas Emissions

2.Takenaka’s Sustainable Activities- Technologies and Works -

“ ”2-1 Concept of “Sustainable Works®”

2-2 Environmentally - friendly Usey y2-3 Environmentally - friendly Design2 4 E i t ll f i dl C t ti2-4 Environmentally - friendly Construction2-5 Ecological Systemg y

■For the future■For the future

ECTP 2009Reduction of Resources 26

GIFU CITY TOWER 43

Reduction of South Sea area’s timber form material

A 56 % i S h S ’ i b

･Use of Precast Concrete members

･Approx. 56-% cut in South-Sea area’s timber

Reduction rate in South Sea area’s timber

60

Reduction rate in South Sea area s timber

Reduction rate (%)

30

40

50

0

10

20

2003 2004 2005 2006 2007 20082003 2004 2005 2006 2007 2008

ECTP 2009Energy Saving at Construction Site :Hybrid Tower Crane

27

CHARGE

･Total power requirement: 7% reductionCHARGE

･High safety

Reduction of power reception systems･Reduction of power reception systems

･Energy saving type power storage control system

USE

Accumulator battery

ECTP 2009

Hokkaido Toyako Summit International Media Center

Project : CO2 reduction of Temporary Building 28ECTP 2009

Hokkaido Toyako Summit International Media Center

Work summaryBasic plan and design developed and construction supervised by Hokkaido Regional Development Bureau, Ministry of Land, Infrastructure,Transport and Tourism and Yamashita sekkei Inc.Designed by Nihon sekkei Inc.Technology of reducing environmental load supported by Takenaka Corporation.C t t d b T k k I t Chi ki It S i l C t ti J i t V tConstructed by Takenaka. Iwata Chizaki. Itou Special Construction Joint VentureStructure : Steel Structure 2 floorsTotal floor area :10,692 ㎡Construction Site :Izumikawa, Rusutsumura, Abuta-gun, Hokkaido

ECTP 2009 29

Before demolitionBefore demolition

After demolition

ECTP 2009Hokkaido Toyako Summit International Media Center

30

99% of building materials is reused and recycled

Reuse 71% Recycle 28% 1% 3RReduceReuse99%recycled ReuseRecycle

99%

Reuse R R l R lR Reuse Reuse Recycle RecycleReuse

Lumber Form Snow Room Floor M t i l (P l tt )

Natural Coolant R f i t

Non-fluorocarbon C t

Cardboard DuctMaterial (Palette) Refrigerator Component

Insulation

ECTP 2009 31ECTP 2009

ECTP 2009Snow Cooling System 32

ECTP 2009 33ECTP 2009

ECTP 2009

■Key Issues for Sustainable Society in Japan

34

■Key Issues for Sustainable Society in Japan1 Reductions of Greenhouse Gas Emissions1.Reductions of Greenhouse Gas Emissions

2.Takenaka’s Sustainable Activities- Technologies and Works -

“ ”2-1 Concept of “Sustainable Works®”

2-2 Environmentally - friendly Usey y2-3 Environmentally - friendly Design2 4 E i t ll f i dl C t ti2-4 Environmentally - friendly Construction2-5 Ecological Systemg y

■For the future■For the future

ECTP 2009TechnologyRoof vegetation membrane Wall vegetation system Vegetation concrete

35

g g y g

40㎜

20㎜

Fastening pin

Push ring Plant

Surface course

500㎜

15㎜20㎜

Water retention and drainage mat

Mat vegetation

Section Porous concrete

Surface course

Root protection sheet

500㎜

500㎜ Crushed stoneWater-retaining material + fertilizer

Low-alkaline cement paste

Evaluation of biodiversity

Heat island countermeasures effects evaluationeffects evaluation

ECTP 2009

Across Fukuoka

Projects 36ECTP 2009

Across Fukuoka

ECTP 2009Poole College Junior and Senior High School 37ECTP 2009

ECTP 2009 38ECTP 2009

Waterfall in the courtyardBiotope

Entrance Bridge Water Stream throughthe campus

ECTP 2009

■Key Issues for Sustainable Society in Japan

39

■Key Issues for Sustainable Society in Japan1 Reductions of Greenhouse Gas Emissions1.Reductions of Greenhouse Gas Emissions

2.Takenaka’s Sustainable Activities- Technologies and Works -

“ ”2-1 Concept of “Sustainable Works®”

2-2 Environmentally - friendly Usey y2-3 Environmentally - friendly Design2 4 E i t ll f i dl C t ti2-4 Environmentally - friendly Construction2-5 Ecological Systemg y

■For the future■For the future

ECTP 2009Sustainable Works toward 2050 40

Target in 2050: Building Environmental Performance

ECTP 2009Takenaka’s Environmental TechnologyWind power generation Roof vegetation

100 fi

41

建設

時

ruct

ion 3R Solar batteries

Natural ventilation and id i li

100-year waterproofing

At c

onst

r

Long life

CO2

outsideair cooling

Light shelfDaylightreduction

Solar batteries

Daylight

Task-ambient lighting and HVAC

oper

atio

n

CO2reduction

Thermal storage slab

Automatic control of daylight

Dur

ing Wall

vegetation Cladding with air vent

Ultra-less-water lavatories

Vegetation technologyrv

atio

n

Ultra less water lavatories

Regenerative elevatortechnology

Biodiversity

men

t con

ser

nera

tion

Longer life of building(seismic isolation technologyCO2 absorption

and urban environmentEn

viro

nman

d re

gen

High-thermal insulation cladding

High-efficiency heat source

(seismic isolation technology, 500-year concrete, etc.)

ECTP 2009Osaka Abeno Project 42

OBSERVATION

RESTAURANTGARDEN

HOTEL

GARDEN/RESTAURANT

OFFICE 300 m

OFFICEHOTEL

MUSEUM/GARDEN

RESTAURANT

DEPARTMENT STORE-

STATIONSTATIONScheduled to open in 2014

ECTP 2009

II Acti e Meas resI Passi e To er B ilding

PASSIVE×ACTIVE×COMMUNICATION 43

II. Active MeasuresI. Passive Tower Building

CO2 d ti i dVoid structure熱回収

光

CO2 reduction in new and existing areas

Void structure

排熱

Curtailment in electricity for lighting by adopting daylighting Variable air conditioning and & 風

熱ホテル

Renewable energy

lighting control systemボイド

光

III Communication

オフィス

熱回収

R d ti i l d

Abeno A-EMS(Abeno Area energy

III. Communication風

光

ダンパー集中冷却塔

風

Reduction in energy loads in the department store

( gyManagement System)

冷Use of rainwater and water-savingwater-saving

ECTP 2009 44

Thank you for your attention