casbee program yokohama city: reporting system for … · yokohama city’s reporting system for...

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October 19, 2016

CASBEE PROGRAM Yokohama City: Reporting System for Environmentally Friendliness of Buildings

Ishii Akira

Assistant Director, Building and Environment

Coordination Division, Housing and Architecture

Bureau, City of Yokohama, Japan

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What buildings are “environmentally friendly”?

CASBEE stands for Comprehensive Assessment System for Building Environment Efficiency.

It is a system that considers the environmental aspects of a building (environmental loads that affect the global or regional environment and quality or performance of the building that may help improve the surrounding environment) from various angles and is used to make a comprehensive evaluation of the building in terms of environmental performance.

Global warming (energy-saving measures), depletion of resources (measures for

conservation of resources and for recycling), heat island effect (greening of buildings),

depletion of the ozone layer (prohibition of CFC), room air pollution (measures for

prevention of sick building syndrome), large-scale earthquake disasters (earthquake-

proofing), air pollution, generation of noise, vibration, foul odors, loss of traditional

townscape, environmental destruction due to land development

Environmental problems related to buildings

Source: IBEC

Background of Development on CASBEE

R&D: Japan Sustainable Building Consortium (JSBC)

Became a general incorporated association in December 2008

Promotion: Institute for Building Environment and Energy Conservation (IBEC)

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Academia

Industry

Government

Ministry of Land,

Infrastructure, Transport

and Tourism (Housing

Bureau, Government

Building Department,

National Institute for Land

and Infrastructure

Management), Urban

Renaissance Agency,

Tokyo Metropolis, Osaka

Prefecture and others.

Architectural offices,

construction companies,

specialist contractors,

energy business companies, etc.

Universities,

independent

administrative

corporations,

building research

institutes, etc.

Review Committee

established in April 2001

Source: IBEC

Development of CASBEE by the Tripartite Cooperation

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Virtual boundary

Inside the boundary

Q: Evaluation by environmental quality of a building

Outside premises

L: Evaluation by environmental burden of a building

Neighboring

building

Neighboring

building

Consumption of resources, emission of CO2, etc.

Exhaust, noise, waste heat, drainage, etc.

Outline of CASBEE - Q and L

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Energy

consumption

Circulation of

resources

Local

environment

Indoor

environment

Classify and reconstruct in terms of

Q (quality) and

L (load)

Q1: Indoor environment

Q2: Service performance

Q3: Outdoor environment

(inside premises)

Numerator of BEE

L1: Energy

L2: Resource and materials

L3: Environment outside

premises

Denominator of BEE

Q: Environmental quality of a building

L: Environmental burden of a building

A total of about 80 minor items are included in these four categories.

There are many items that have both aspects of Q and L.

Those items are therefore classified and reconstructed into Q and L.

To begin with, subjects of evaluation are classified into four major categories.

Source: IBEC

Reconstruction into Four Major Evaluation Areas and Q and L

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Rank

S: Excellent

A: Very good

B+: Good

B-: Fairly poor

C: Poor

BEE = 1.2

C

B-

B+ S A

44

53

0

50

100

50 100

L : Building environmental load

Q :

En

vir

on

men

tal

qu

ality

o

f a b

uil

din

g

BEE=3.0 BEE=1.5 BEE=1.0

BEE=0.5

0

Source: IBEC

Environmental Labeling Using BEE

A BEE value is indicated as the gradient of a straight line in this graph, and the gradient represents the degree of a building’s sustainability.

CASBEE Family

Building

Housing

CASBEE for Detached Housing (Existing )

Local Government version of CASBEE

CASBEE-Osaka

CASBEE-Yokohama

CASBEE-Nagoya CASBEE for schools*

24 local governments, Including above

CASBEE-Fukuoka

Checklist for housing health

CASBEE for Heat Island (HI)

CASBEE for Real Estate

Checklist for Community Health CASBEE for Blocks

CASBEE for Urban Development (detailed version) CASBEE for Urban Development

Checklist for housing renovation

Checklist for resilient housing

CASBEE for Interior Space

CASBEE for Urban Development (pilot version for worldwide use)

* Prepared by The Ministry of Education

CASBEE for Housing Unit (New construction)

CASBEE Family

Source: IBEC

Block

Urban

CASBEE for Detached Housing (New construction)

CASBEE for Building (Existing )

CASBEE for Building (Renovation)

CASBEE for Building (New construction) CASBEE for short-term use

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Yokohama City’s Reporting System for Environmentally-Friendliness of Buildings

Yokohama city’s Reporting System for Environmentally-Friendliness of Buildings promotes the comprehensive improvement of the environmental aspects of buildings by recommending that the building owners to prepare “reports on environmentally-friendliness of buildings.” The Reporting System is composed of two layers, a reporting system and a certification system.

Report for Environmentally-Friendliness of Building is prepared using the evaluation system CASBEE Yokohama, which is a version of CASBEE for New Construction (brief version) partly re-edited to match the needs of Yokohama city.

CASBEE Yokohama [Detached House] is applied to detached houses.

Notification is mandatory.

Building with a total floor area of 2,000 m2 or more

(excl. detached houses)

Legal basis: Yokohama City Ordinance on Preservation

of the Living Environment

Designated building

Evaluated by CASBEE Yokohama

Notification is arbitrary.

Detached houses

Non-designated building (buildings other than designated ones)

Building with a total floor area of less than 2,000 m2

(excl. detached houses)

Evaluated by CASBEE Yokohama

Evaluated by CASBEE Yokohama [Detached House]

Legal basis: Yokohama City Guideline on Notification under the Reporting System

for Environmentally-Friendliness of Building for Non-designated Buildings

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1. Reporting System (launched in July 2005):

Yokohama City Ordinance on Preservation of the Living Environment

The ordinance stipulates that owners of buildings that have a total floor area of 2,000 m2 must

provide a self-assessment of their buildings, as per CASBEE Yokohama, to the city at the time

of building planning. Evaluation results submitted to the city are also disclosed on the official

website of Yokohama city.

Since April 2012, owners of buildings with a floor area of less than 2,000 m2, including detached

houses, are allowed to submit the assessment reports to the city if they so desire.

2. Certification System (launched in April 2006):

Yokohama City Guideline on Evaluation and Certification System for Environmentally-

Friendliness of Building

Yokohama city certifies that a building is recognized as being a duly environmentally-

friendliness of building, based on the evaluation of special advisors. This certification system is

intended to promote CSR (corporate social responsibility) of building owners in regard to the

environment and is applied to buildings if their owners wish.

Reporting System and Certification System

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Important Points Emphasized by Yokohama City

The city puts priority on the following four aspects, based on local characteristics

(Energy Saving) Energy Saving

Performance of Buildings Yokohama City promotes

reduction of energy consumption by the

household- and business sectors, which is

responsible for huge amounts of greenhouse gas

emissions.

(Smart Wellness Community) Healthy and comfortable

working and living environments

Yokohama City promotes useful measures for urban development

in order to enable its citizens to realize good health and longevity.

We indicate “comfortable and workability” for non-residences

and “healthy and sage” for multifamily housing and

detached houses.

(Resilience) Consideration for Disaster

Prevention Yokohama City promotes measures to prepare for

disasters such as earthquakes.

(Township and Townscape) Contribution for regional and town development Yokohama city promotes measures to realize green town development using

history and nature, based on Yokohama City’s performance

for its unique urban design, which has been promoted

in other big cities.

Examples of Measures (other than detached housing)

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Consideration for townscape • Consideration for landscape of neighboring districts • Restoration and preservation of historic buildings

Control of heat load of building • High performance glass • Blocking of sunlight by eaves • Improvement of thermal insulation

Consideration of regional

characteristics • Provision of public squares and sidewalk-shaped open spaces as regional oasis

Improvement of the thermal

environment on the site • Ensuring the green spaces and open spaces • Orientation to capture breeze

Preservation and creation of the

biological environment

• Biotope

• Arrangement of waterfront

Reliability

• Thermal storage system

Energy management system: BEMS

Reliability

• Cogeneration system

Earthquake resistance /

base isolation

• Base isolation structure

Reliability

• Utilization of

rainwater

Utilization of natural energy

• Photovoltaic generation

• Solar power generation

High efficiency of equipment system

• High efficiency lighting

• Utilization of high COP heat source

equipment

Improvement of intellectual

productivity

• Communication space

Upgrading of the service life of

components and members

• Utilization of long life materials

Reliability • Emergency water well


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T-1

EW-1


T-2

W-1

T-3

Reliability



Reliability


Earthquake resistance /

base isolation

• Base isolation structure

Reliability

• Utilization of

rainwater







equipment


productivity






T (Township and Townscape)

◆T-1：Consideration for townscape

• Consideration for landscape of neighboring districts

・Restoration and preservation of historic buildings

◆T-2： Consideration on regional characteristics

・Provision of public squares and sidewalk-shaped

open spaces as regional oasis

◆T-3：Preservation and creation of the biological

environment

・ Biotope ・ Arrangement of waterfront

E (Smart Wellness Community)

W (Township and Townscape)

◆EW-1： Control of heat load of building

・ High performance glass

・ Blocking of sunlight by eaves

・ Improvement of thermal insulation

◆W-1： Improvement of the thermal environment

on the site

・ Ensuring the green spaces and open spaces

・ Orientation to capture breeze


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R-1

E-1

ER-1

R-2

R-3







equipment


productivity






R (Resilience)

◆R-1： Reliability

・ Thermal storage system

◆E-1： Energy management system: BEMS

◆ER-1: Reliability

・ Cogeneration system

◆R-2： Earthquake resistance / base isolation

・ Base isolation structure

◆R-3： Reliability

・ Utilization of rainwater


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Consideration for townscape • Consideration for landscape of neighboring districts • Restoration and preservation of historic buildings


Consideration on regional

characteristics • Provision of public squares and sidewalk-shaped open spaces as regional oasis

Improvement of the thermal

environment on the site

• Ensuring the green spaces and

open spaces

• Orientation to capture breeze

Preservation and creation of the

biological environment

• Biotope

• Arrangement of waterfront

Reliability



Reliability


ER-2

E-2

W-2

R-4

R-5

◆ER-2: Utilization of natural energy

・ Photovoltaic generation

・ Solar power generation

◆E-2: High efficiency of equipment system

・ High efficiency lighting

・ Utilization of high COP heat sourceequipment

◆W-2: Improvement of intellectual productivity

・ Communication space

◆R-4: Upgrading of the service life of


・ Utilization of long life materials

◆R-5: Reliability

・ Emergency water well

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• High performance glass • Blocking of sunlight by eaves

Structure for long-term use

Automatic lighting system (in case of blackouts)

Windows for effective crime prevention

•Eco-friendly exterior plan •Secure feeding site/watering place

•Photovoltaic generation •Solar power water supply

Natural ventilation

•High efficiency lighting •High efficiency air conditioning

Energy management system: HEMS

•High thermal-insulation bath tub •High efficiency water heater

Upgrading of earthquake resistance

•Consideration on surrounding scenery •Landscaped garden and access path

Interior finishing that utilizes natural materials

Appropriate ventilation

Fire preventive planting

Continuous green by planting hedges

Fuel cell cogeneration

Examples of Measures (detached housing)

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EW-1

R-2

R-1

W-1

T-1

E-1

E-2

•High thermal-insulation bath tub •High efficiency water heater

R-3

•Consideration on surrounding scenery •Landscaped garden and access path

Interior finishing that utilizes natural materials

Appropriate ventilation

Fire preventive planting

Continuous green by planting hedges

Fuel cell cogeneration


◆E-1 ・ Photovoltaic generation

・ Solar power water supply

◆E-2 ・ Natural ventilation

◆R-1 ・ Structure for long-term use ◆R-2 ・ Automatic lighting system (in case of blackouts)

◆EW-1 ・ High performance glass

・ Blocking of sunlight by eaves

◆W-1 ・ Windows for effective crime prevention

◆T-1 ・ Eco-friendly exterior plan

・ Secure feeding site/watering place

◆R-3 ・ Upgrading of earthquake resistance

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E-3

E-4 E-5

T-2

W-1

W-2

R-4

T-3

E-6


• High performance glass • Blocking of sunlight by eaves

Structure for long-term use

Automatic lighting system (in case of blackouts)

Windows for effective crime prevention

•Eco-friendly exterior plan •Secure feeding site/watering place

Natural ventilation

◆T-2 ・ Consideration on surrounding scenery ・ Landscaped garden and access path ◆T-3 ・ Continuous green by planting hedges

◆E-3 ・ High efficiency lighting

・ High efficiency air conditioning

◆E-4 ・ Energy management system: HEMS

◆E-5 ・ High thermal-insulation bath tub

・ High efficiency water heater

◆W-1 ・ Interior finishing that utilizes natural materials ◆W-2 ・ Appropriate ventilation

◆R-4 ・ Fire preventive planting

◆E-6 ・ Fuel cell cogeneration

CASBEE横浜（2016年版）v.1

4　横浜市重点項目についての環境配慮概要 <集合住宅>

各項目について配慮した内容を、該当する番号（①～）を示し記述してください。建物名称

建築物の省エネルギー性能　(E)　Energy Saving 重点項目への取組（５点満点）【省エネルギー性能】 3■省エネルギー性能　（国土交通省告示に基づく表示）

この建物の設計一次エネルギー消費量　 10 ％削減

　　　　　一次エネルギー消費量基準適合

　　　　　外皮基準適合

　　　　　受付日

■エネルギー対策　（①建物外皮の熱負荷抑制　②自然エネルギー利用　③設備システムの高効率化　④効率的運用）

健康・快適な職住環境　(W)　Smart Wellness Community 重点項目への取組（５点満点）【健康・安心】 3■室内環境対策　（⑤外皮性能）

◆断熱等性能等級等級４（相当）

■健康・安心対策　（⑥健康対策　⑦防犯対策）

■その他の対策　（⑧自然材料・通風の工夫など）

◆工夫の有無なし

防災への配慮　（R）　Resilience 重点項目への取組（５点満点）【防　災】 3■耐用性・信頼性　（⑮耐震・免震　⑯部品・部材の耐用年数向上　⑰信頼性）

地域・まちづくりへの貢献　（T）　Township & Townscape 重点項目への取組（５点満点）【地域・まちづくり】 3■室外環境（敷地内）対策　（⑱生物環境　⑲まちなみ・景観　⑳地域性への配慮）

太陽光発電などの導入　環境配慮技術の導入（太陽光・熱利用、エネルギーマネジメントシステム以外）

蓄熱設備　・雨水等利用設備　・　

エネルギーマネジメントシステム導入

28-000

○○マンション

2016/XX/XX

HEMS MEMS

少ない多い

▲誘導基準

(10%削減)

▲省エネ基準

0

CEMS

■使用評価マニュアル： ■使用評価ソフト：

1-1　建物概要 1-2　外観

建物名称 ○○ビル階数地上○○F

建設地横浜市○○ 構造 RC造

用途地域商業地域、防火地域平均居住人員 XX 人

気候区分６地域年間使用時間 XXX 時間/年

建物用途事務所, 評価の段階実施設計段階評価外観パース等

竣工年予定評価の実施日 2014年7月8日図を貼り付けるときは

敷地面積 XXX ㎡作成者 ○○○ シートの保護を解除してください

建築面積 XXX ㎡確認日 2014年7月10日

延床面積 5,400 ㎡確認者 ○○○

2-1　建築物の環境効率（BEEランク&チャート） 2-2 ライフサイクルCO2 (温暖化影響チャート） 2-3　大項目の評価（ﾚｰﾀﾞｰﾁｬｰﾄ）

2.2

標準計算

2-4　中項目の評価（バーチャート）

Q　環境品質 Q のスコア = 3.4Q1 室内環境 Q2 サービス性能 Q3 室外環境（敷地内）

3.5 3.2 3.4

LR　環境負荷低減性 LR のスコア = 3.8LR1 エネルギー LR2 資源・マテリアル LR3 敷地外環境

4.5 3.3 3.5

3　設計上の配慮事項

総合その他

Q1 室内環境 Q2 サービス性能 Q3 室外環境（敷地内）

LR1 エネルギー LR2 資源・マテリアル LR3 敷地外環境

このグラフは、LR3中の「地球温暖化への配慮」の内容を、一般

的な建物（参照値）と比べたライフサイクルCO2 排出量の目安

で示したものです

注）　「Q2　サービス性能」に対する配慮事項を簡潔に記載し

てください。

注）　「Q3　室外環境（敷地内）」に対する配慮事項を簡潔に

記載してください。

CASBEE-建築(建築)2014年版 CASBEE横浜（ 2016年版） v.1.0

注）　「LR1　エネルギー」に対する配慮事項を簡潔に記載し

てください。

注）　「LR2　資源・マテリアル」に対する配慮事項を簡潔に記

載してください。

注）　「LR3　敷地外環境」に対する配慮事項を簡潔に記載し

てください。

2016年12月

注）　設計における総合的なコンセプトを簡潔に記載してください。注）　上記の６つのカテゴリー以外に、建設工事における廃棄

物削減・リサイクル、歴史的建造物の保存など、建物自体の環

境性能としてＣＡＳＢＥＥで評価し難い環境配慮の取組みがあ

れば、ここに記載してください。

注）　「Q1　室内環境」に対する配慮事項を簡潔に記載してく

ださい。

4.2

3.5

2.8

1

2

3

4

5

3.4 3.4 3.2

1

2

3

4

5

4.1

5.04.7

4.5

1

2

3

4

5

3.0

4.1

3.63.2

1

2

3

4

5

4.0

3.0

3.5

1

2

3

4

5

水資源

1

2

3

4

5

Q2 サービ

ス性能

Q3 室外環

境

(敷地内)

LR3

敷地外環境

LR2 資源・

マテリアル

LR1

エネルギー

Q1

室内環境

3.5 3.1 3.0

1

2

3

4

5

2.2

28

61

0 50 100

0

50

100

環境

品質

Ｑ

環境負荷 L

S A B+

B-

C

3.0

0.5

1.5 BEE=1.0

音環境機能性生物環境

非再生材料の使用削減

耐用性

・信頼性

対応性

・更新性

まちなみ

・景観

地域性・

アメニティ

★C: ★★: -B★★★: +B★★★★A: ★★★★★S:

Q3のスコア=

LR3のスコア=LR2のスコア=

Q2のスコア=Q1のスコア=

LR1のスコア=

温熱環境光･視環境空気質環境

汚染物質回避

建物外皮の熱負荷

自然エネルギー

設備システム効率化

効率的運用

地球温暖化への配慮

地域環境への配慮

周辺環境への配慮

BEE =

①参照値

（

30%: ☆☆☆☆☆ 60%: ☆☆☆☆ 80%: ☆☆☆ 100%: ☆☆ 100%超: ☆

）2 m・年/2CO-kg（

②建築物の取組み

③上記+②以外の

オンサイト手法

0 46 92 138

建設修繕・更新・解体運用オンサイトオフサイト

④上記+

オフサイト手法

100%

79%

69%

69%

18

The outlines of reports on environmentally-friendliness of buildings submitted to the city are disclosed to the public through, for example, the city’s website.

Ranking indication of LCCO2

Ranking indication of comprehensive evaluation

Indicates measures for important items

(one to five)

Evaluation result sheet (important items) Evaluation result sheet

Publication of the Outlines of Reports on Environmentally-friendliness of Buildings

Indicates the marks in the case of installing the photovoltaic generation,

energy management system and others.

Indicates energy-saving performance

19

Comprehensive evaluation

Use of sunlight and solar heat

Reduction rate that is calculated based on annual energy consumption of standard buildings is shown.

Reduction rate of energy consumption

The degree of compliance with the four important items of Yokohama city is indicated by the number of double-leaf marks.

Compliance with important items

Submission date for submitting of notification to Yokohama City is shown.

Submission no. for submitting of notification to Yokohama City is shown.

Submission No. Version number of the software

When a building is advertised either for sale or for rent, the Built Environment Performance Labeling, which indicates the degree of compliance of the building with environmental performance criteria, must be indicated in the advertisement. * For a non-designated building whose notification was submitted on a voluntary basis, indication

of the labeling on the advertisement is also voluntary.

Labeling of Built Environment Performance

Yokohama City Built Environment Performance Labeling (apartment housing)

Use of sunlight / heat

Reduction of energy consumption XX %

Import

ant item

s Energy saving

performance

Health / Security

Disaster prevention

Locality / Town development

Comprehensive Evaluation

CASBEE Yokohama 20XX

This indication is the result of a self-evaluation by building owners

The sun mark and character are shown when photovoltaic generation system or solar heat system is installed.

The environmental performance of a building is indicated by the number of stars (one to five).

Excellent

Very good

Good

Slightly poor

Poor

The version number of the software

used for evaluation is shown.

submission date: month-day, 20XX

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