Reference 4

Accomplishment of a Strong Disaster Resilient City
Promotion of seismic resistanceand fireproof of buildings (CWHD)

Development of fire-inceptingzone of principal fireproof axis

Promotion of Disaster Resilient
Urban Development
Facilitating disaster resilient urban
development for close-set wooden
housing district and promoting
seismic resistance and fireproof ofbuildings as well as constructing
necessary roads and parks

Development of wide-areadisaster prevention center

Promotion of countermeasures
for torrential rain

Promotion of seismic resistance ofurban infrastructure and public facilities

From Realization of a Strong Disaster Resilient City, Basic Strategy 7,
Tokyo City Planning Vision (revised), July 2009

Distribution of the Close-set Wooden Housing
Close
Close-setDistrict

Loop Road 7

清瀬市

足立区
板橋区
北区

東村山市
東久留米市

葛飾区

A Big Earthquake Will Certainly Occur Someday
According to the Central Earthquake Research Committee, theoccurrence probability of a big earthquake in MinamiMinami-Kanto area isabout 70% in the coming 30 years

練馬区
荒川区
西東京市

豊島区

＜Collapsed and burned buildings＞

小平市
文京区
国分寺市

JR Chuo Line

立市

台東区

中野区

武蔵野市
小金井市

江戸川区
千代田区

中央区

渋谷区

江東区

調布市
港区

JR Yamanote Line世田谷区
多摩市

狛江市

稲城市

Component ratio
Collapsed andburned471,586

目黒区

Loop Road 8

Liquefaction
3%
13,356transportation
6%
390 Collapse of Bldg
27%
1,737

Component ratio
Death 6,413

Landslide
1%
2,795

品川区

Burned out
73%
345,063
大田区

About 23,000 ha

Falling Objects
12%769

Shaking
23%
110,372

杉並区

三鷹市

府中市

＜Death＞

墨田区

新宿区

Partially damaged
Shaking 334,125
Liquefaction 11,529

Fire
55%
3,517
Injured (including seriously-injured) 160,860〇 Assumption: North Tokyo Bay Earthq., M7.3、18:00 of winter, wind speed 15m/s（Ref）TMG Disaster Prevention Committee「Damage estimation for a local earthquake, May 2006」

Urban Development

1Reference 4

Seismic risk assessment and zoning (Sixth time)(Feb. 2008)
Objectives

Promotional plan for a disaster prepared city
(March 2004)(1) Objective

Conducted every 5 years with the objectives below based on the TMG Disaster
Prevention Ordinance・As the basic information for disaster resilient urban development
・Used for selecting the areas to implement seismic prevention projects
・Used for boosting and raising public awareness on disaster prevention

Contents of investigation
Assessment for the following three risksfor each Cho and Chome when an
earthquake occur
・Risk of collapse of buildings
・Risk of fire・Integrated risk

(2) Area

23 wards and 7 cities in the Tama area (CWHD)(3) Contentsand period

Master plan

FY2003〜FY2025（23 years）

Implement program

FY2003〜FY2015 (13 years)(4) Basic
concept

Total risk grade

Concept of Fire
ire--intercepting Z
one and Fire-safe Living Area
FFire
Fire-intercepting
Zone
Fire-safe

Urban area inside the firesafe living area

fire-intercepting
zone

Urban area inside the firesafe living area

Prevention offire spread

Urban area in a disaster-Resistant living area
•Fireproof of Bldgs•Sufficient open space

Improvement offire resistance
Fireproof building ,etc

Fire-safe living area

fire-intercepting zone

Securing the safety of the disasterresistant living area

Urban Development

Basic Policy for Fire-intercepting Zone
FireFire-intercepting
Principal fireproof axis
Major fire-intercepting zone

Major trunk road、river with large width
Trunk roadGeneral fire-intercepting zone Roads and rivers except those abovementioned

Objectives
Among the all City planning road
Ratio of Principal fireproof axis

•Road improvement

City planning roadFire-safe living area

① To build a disaster resistant urban structure
Creating fire-intercepting zone, expending evacuation shelter② To improve the disaster prevention capability of district
Considering the fire-safe living area, blocked by the fire-intercepting zone, as abasic unit
Promoting implementation to the whole area with considering the characteristics
of each area
③ To upgrade the earthquake- and fire- proof capacity of each individual buildings
Assistance and guidance for fireproof and promotion of seismic retrofitting forprivate buildings

Fireproof Bldg

Fire-safe living area１KmX１Km
About the same size as an elementaryor junior high school district・In response to the TMG Disaster Prevention Ordinance・To prevent disaster before an earthquake and the expansion ofdisaster after it occur
Promotion of improvement of urban structure throughstrengthening the safety and fireproof of buildings and urban
facilities against an earthquake

95％ (by 2015)

Strategy• Improvement of road• Fireproof Bldg along a road (Urban fireproof promotion program)

Preventing Large fires in urban
area after earthquakes• Guidance by regulations (ex. Fireproof regulation, etc.)2Reference 4

Basic policy for urban redevelopment
Definition of CWHD
・Wooden housing >=70%
・Old wooden housing >=30%
・Fireproof area <60%, etc.

Urban area
CWHD

23,000ha

Redevelopment 27 areas, 6,500ha

Overview of the TMG Integrated Disaster
Prevention ProjectCriteria for redevelopment
・Within risk (collapse, fire) 5 area
・Fireproof area <60%, etc.

Priority redevelopment
area 11 area, 2,400ha

Goal
Within priority and redevelopment areas
The ratio of Fireproof area

Creating new evacuation shelter
and fire-intercepting zone

Redevelopment of the areas withdense old wooden housing

70% (by 2015)
Urban fireproof promotion project (outside)
Objective area : 24

CWHD redevelopment project (inside)
Objective area: 50

Strategy
Redevelopment area
Rehabilitation project（(ex.: CWHD redevelopment project)
Guidance regulation (ex: Fireproof regulation in TMG building safety regulation

Priority area
Other than above

Infrastructure development project (ex: road project)

Redevelopment of Outside of CWHDTMG Urban Fireproof Promotion Project

TMG Urban Fireproof Promotion Project
ExamplesEvacuation route project

Around fire-intercepting zone

Around emergency road

Otakebashi road area(Arakawa ward)

BeforePeriod:FY1987〜FY2000
Fireproof ratio: 30.1%→58.5%

After

Around evacuation area

Around special disaster prevention facilities

Fireproof Bldg
along the road

The example showing a fireproof promotion
project was effectively conducted in the time
when the road redevelopment was performed

Urban Development

3

Reference 4

Redevelopment of the Inside Structure
TMG CWHD Redevelopment ProjectPark development（＋Quakeproof water tank）

Assistance for rehabilitationof Bldgs along maincommunity road

〇Ensure the disaster prevention activity space〇Prevention of fire spread〇Improvement of living environmentTMG CWHD Redevelopment Project
Example（development of main community road）
BeforeBeforeSubsidy for demolishing , designand construction cost
〇Promotion of fireproof〇fire spread interception

Assistance for rehabilitationof old Bldgs

Development ofresidential road

Subsidy for demolishing ,design and construction cost

〇Vanishing the difficult area during fire fighting〇Disappear dead end〇Ensuring the condition of rehabilitation〇Promotion of fireproof〇Improvement of living environment〇Improvement of housing condition

AfterAfter

Development of community housing

Ensuring the continue residence of theresidents who has difficulties due to therehabilitation and redevelopment ofpublic facilities

Development of main community road
（Widening road and undergrounding power line）〇Vanishing the difficult area during fire fighting〇Securing the evacuation route

Increased road width

Increased road width
Road width before
redevelopment
Kitacho, Nerima ward

Road width before
redevelopment
Kyoshima, Sumida ward

TMG CWHD Redevelopment Project

TMG CWHD Redevelopment Project

Example (development of park)

Example (Promotion of rehabilitation)
BeforeBeforeBefore

After

After
After

New park

Egota, Nerima ward

Urban Development

Wkaba, Shinjuku ward

Kamijujo, Kita ward

4

Reference 4

Community-based Redevelopment ProjectCommunityProjectCommunity-based
Image

Outline of the Integrated Development ofRoad and Roadside【Before】

BeforeTogether with the road development,
promoting the effective land use of roadside to
develop fire-intercepting zone, evacuation
road and promoting collective housing withreflecting the opinions of local residents

After
Ownershipexchange
Improvement of disaster resistant bybuilding collective housing (fireproof orsemi-fireproof Bldg)

Objective districts
Width of Urban planning roadDisasterprevention public
facilities (road)

Higashi-ikebukuro（Toshima ward）(Subsidiary road No. 81)

Fireproof Bldg

Disaster prevention
public facilities(road, park)

Fireproof Bldg

【After】
Widening of community road

Purchasing remained landand rehabilitation

Kanegabuchi（Sumida ward）(Subsidiary road No. 120)
Doshida and Takamatsu（Nerima ward）(Subsidiary road No. 230)

Ownership exchange for disasterprevention Bldg or move-out

Area of single-family
housing (fireproof orsemi-fireproof Bldg)

Ownership exchange for SFH

Urban planning road (fire-intercepting zone)

Jujo（Kita ward）(Subsidiary road No. 83)
Megurohonchou（Meguro ward）(Subsidiary road No. 46)

Collective housing

Rehabilitation on theremained land

New fire regulation of TMG Bldg safety ordinanceTotal floor area 500㎡ （or >=３ stories） 1500㎡ （or >=4 stories）▼Restriction of semisemifireproof area▼

Wooden, fireproof housing Semi-fireproof Bldg

Regulated in 2003

Fireproof Bldg

Total floor area 500㎡ （or >=4 stories）▼New restriction ofsemisemi-fireproof areasemi-fireproof Bldg

Fireproof Bldg

○Achievement： as of Aug. 2009 3,020ha （11 ward,1 city）

Community disaster prevention plan

Regulated in 1997

＜Objective＞
Ensuring fire spread interception and evacuation road by improvement ofpublic facilities, such as main community road, and promotion of fireproof
buildings along the road
Besides the restriction on height and wall surface, the restriction on thestructure and aperture ratio of a building is applied○Achievement： as of Aug. 2009, 409ha (13 districts)

Urban Development5