Post on 09-Apr-2020
Living in SustainabilityLiving in SustainabilityCase Sharing ofCase Sharing of
KwaiKwai ShingShing West EstateWest Estate
William HOChief Manager / Management (Project Management & Kwai Chung)
Franki MOKBuilding Services Engineer, Building Services Management Unit
7 October 2014
CONTENTCONTENT
(1)(1) IntroductionIntroduction
(2)(2) Project BackgroundProject Background
(3)(3) BEAM Plus Credit AnalysisBEAM Plus Credit Analysis
(4)(4) Way ForwardWay Forward
IntroductionIntroductionandand
Project Project BackgroundBackground
4INTRODUCTIONINTRODUCTION
Hong Kong Housing Authority (HA)Hong Kong Housing Authority (HA)
• Statutory body established in 1973 under the Housing Ordinance to develop and implement public housing policies
• Provides homes for over 2 million people• Over 740 000 flats in 205 public rental housing estates • About 1200 existing HA buildings• Around 44% built in 1980s or earlier
5INTRODUCTIONINTRODUCTION
Maintenance Strategy:Maintenance Strategy:Maintenance for SustainabilityMaintenance for Sustainability• Sustainability is one of the key
maintenance strategy for PRH estates
• Timely maintenance and proper improvement works
Ensure a safe and pleasant living environment
Sustain lifespan and economic value of the buildings
6INTRODUCTIONINTRODUCTION
Estate Maintenance & ImprovementEstate Maintenance & Improvement• Tie in with life cycle of estates and
constantly upgrade facilities to meet residents' needs
Comprehensive Structural Investigation ProgrammeEstate Improvement ProgrammeTotal Maintenance SchemeResponsive In-flat Maintenance SchemeLift Modernisation and New Lift Addition
7INTRODUCTIONINTRODUCTION
Estate Management : Green LivingEstate Management : Green Living• Benchmark environmental performance
of existing PRH estates with international standards and scientific building assessment method:ISO 14001 Environmental Management SystemISO 18001 Occupational Health and Safety Management SystemISO 50001 Energy Management SystemGreen Roofs and Vertical GreeningFeasibility Study of Implementing BEAM Plus for Existing Buildings (EB)Pilot Implementation of BEAM Plus for EB
8INTRODUCTIONINTRODUCTION
Pilot Implementation of BEAM Plus for EBPilot Implementation of BEAM Plus for EB
• In 2012, feasibility study for implementing BEAM Plus EB at two existing PRH estates was conducted
• In 2013, one of these existing PRH estates, Kwai Shing West Estatewas selected as pilot to obtain BEAM Plus EB certification
9INTRODUCTIONINTRODUCTION
• In November 2013, Provisional Assessment submission was made
• In June 2014, Provisional PLATINUM rating under BEAM Plus for EB Version 1.2 was achieved
• First existing building to achieve this rating in EB category
Pilot Implementation of BEAM Plus EBPilot Implementation of BEAM Plus EB
10PROJECT BACKGROUNDPROJECT BACKGROUND
District : Kwai Tsing
Completion Year : 1975 - 1977
Estate Area : 85,000 m2
Domestic Flats : 5,260Population : 14,800 / Elderly : 4,430 (30%)
Ancillary Facilities :
Shopping Centre & MarketMulti-storey Car ParksPublic Transport TerminalCommunity HallPrimary Schools & Kindergarten
Type of Domestic Blocks :
10 Old Slab Blocks(7-25 storeys)
KwaiKwai ShingShing West EstateWest Estate
1111PROJECT BACKGROUNDPROJECT BACKGROUND
12
Challenges of Existing PRH EstatesChallenges of Existing PRH Estates• Building Constraints of Existing Layout & Structures
Existing refuse storage areas are not enclosed and does not fulfill PNAP APP-35 requirements for independent mechanical ventilation.
• Minimal Interruptions and Disturbance to Densely-populated Tenants
Residential flats are excluded from BEAM Plus assessment.
• Cost-effectiveness
PROJECT BACKGROUNDPROJECT BACKGROUND
BEAM Plus BEAM Plus Credit Credit AnalysisAnalysis
14BEAM Plus CREDIT ANALYSISBEAM Plus CREDIT ANALYSIS
• Under BEAM Plus EB Assessment, a weighting over different environmental performance is considered:
Site Aspects (SA)
Materials Aspects (MA)
Energy Use (EU)
Water Use (WU)
Indoor Environmental Quality (IEQ)
Innovations and Additions (IA)
Determination of Overall Grade in BEAM Plus EBDetermination of Overall Grade in BEAM Plus EB
15
3 credits70%70%70%75%Platinum
2 credits60%60%60%65%Gold
1 credit50%50%50%55%Silver
40%40%40%40%Bronze
Unclassified
IAIEQEUSAOverall Achievement
Rating
BEAM Plus CREDIT ANALYSISBEAM Plus CREDIT ANALYSIS
Determination of Overall Grade in BEAM Plus EBDetermination of Overall Grade in BEAM Plus EB
16
84.4 (>75%)Overall Score
5.0100%-5.06 BonusIA
22.325%89%9.811.0IEQ
8.615%57%4.07.0WU
29.930%100%20.020.1EU
4.512%38%3.08.0MA
14.118%78%12.516.0SA
Weighted Achieved Credits
Weighing Factor
% Achieved Credits
Achieved Credits
Applicable Credits
Category
Summary of Credits Achieved in KSW EstateSummary of Credits Achieved in KSW Estate
BEAM Plus CREDIT ANALYSISBEAM Plus CREDIT ANALYSIS
17BEAM Plus CREDIT ANALYSISBEAM Plus CREDIT ANALYSIS
• Improvement measures are grouped into 5 categories:Data and Records Gathering
• Environmental Purchasing Records, Waste RecordsProcedures / Manuals / Guidelines Development
• Tenant Guidelines / HandbooksSite Measurements
• Water Quality SurveyTechnical Studies
• Waste Audit, Energy Audit, Carbon Audit, Water Audit
Building Improvement Works
Improvement Measures for BEAM Plus EBImprovement Measures for BEAM Plus EB
18SITE ASPECTS (SA)SITE ASPECTS (SA)
• SA 1 Site SelectionSite Design
• Variety of building height (7-25 storeys) and mass (middle-rise blocks) harmonise with urban setting
• View corridor : stepped building profile allows view to natural landscape
19SITE ASPECTS (SA)SITE ASPECTS (SA)
Provision of Basic Services, Public Transport and Recreational Facilities
Public Transport
20SITE ASPECTS (SA)SITE ASPECTS (SA)
• SA 2 Emissions from Site
Level of intruding noise from site
• Complies with criteria recommended in the Hong Kong Planning Standards and Guidelines
21SITE ASPECTS (SA)SITE ASPECTS (SA)
• Management and Maintenance PracticesEnvironmental Purchasing Plan and Practices (SA P1 & SA 5)
• Environmental procurement principles, Purchasing records of environmentally friendly materials, products
Health, Safety and Environmental Management (SA 4)
• ISO 14001 Environmental Management System
• ISO 18001 Occupational Health and Safety Management System
Effective Operations and Maintenance Systems (SA 6, SA 7, SA 8 & SA 9)
• Proper O&M programme and procedures• Adequate staffing and resources• Comprehensive tenants’ guidance
ISO 14001 : 2004Certification on
21 Jan 2013
22MATERIALS ASPECTS (MA)MATERIALS ASPECTS (MA)
• Selection of Materials Use of products that avoid use of ozone depleting substances (MA 6b)
• E.g. Roof Insulation Materials, Fire suppression materials
Non-applicable Credits:• No centralised A/C : CFC-refrigerants (MA P1)• Existing building : Building reuse (MA1), standardised
design (MA2), adaptability for deconstruction (MA3)• Waste Management
Provision of Waste Recycling Facilities (MA P2)Waste stream audit (MA 7a)Environmentally responsive waste management system (MA 7b)
23WATER USE (WU)WATER USE (WU)
• Monitoring and ManagementWater Quality Survey (WU P1)
• Water sampling tests conducted for all common areas
Minimum Water Saving Performance (WU P2, WU 1 & WU 6)
• Use of water efficient devices• Building improvement works
Water Conservation Plan (WU P3)• Water sampling tests conducted for all common
areasWater Audit (WU P5)
24WATER USE (WU)WATER USE (WU)
• Replacement of water cisterns and urinal flush value from single flush to dual flush system (WU 6)
Building Improvement Works
DUAL FLUSH URINALS DUAL FLUSH W.C. AUTO-SENSORY WATER TAPS
• Auto-sensory water taps for public toilets (WU 1)
25INDOOR ENVIRONMENTAL QUALITYINDOOR ENVIRONMENTAL QUALITY(IEQ)(IEQ)
Improvement Measures under IEQ• Security (IEQ 1)
Security Measures and Facilities : CCTV System• Hygiene (IEQ 2, 4)
Plumbing and Drainage• Proper system design, operation and maintenance
Waste Disposal Facilities• Modification of existing refuse storage areas
• Indoor Air Quality (IEQ 8c, 12, 13a)Compliance of ventilation requirements in estate management office, toilets & refuse rooms and common area
• Thermal Comfort (IEQ 15a)Thermal simulation for naturally ventilated pubic areas
• Lighting Quality (IEQ 18)Lighting simulation in common or service spaceCompliance with CIBSE guide or HA standard.
26INDOOR ENVIRONMENTAL QUALITYINDOOR ENVIRONMENTAL QUALITY(IEQ)(IEQ)
Building Improvement Work under IEQWaste Disposal Facilities (IEQ 4)
• Existing refuse storage areas are not enclosed and do not fulfill requirements in PNAP APP-35
• Modification is required
27INDOOR ENVIRONMENTAL QUALITYINDOOR ENVIRONMENTAL QUALITY(IEQ)(IEQ)
• Addition of independent mechanical air filtration system for all existing refuse storage areas
Building Improvement Works
28INDOOR ENVIRONMENTAL QUALITYINDOOR ENVIRONMENTAL QUALITY(IEQ)(IEQ)
• Building Amenities
Access for Persons with Disability (IEQ 22)
• Improvement works have been carried out to meet requirements in Design Manual : Barrier Free Access 2008 as far as practicable
Improvement Measures under IEQ
29Improvement of Barrier-free Access
30Improvement of Barrier-free Access
31
1) Aim : Adapts buildings which have no lifts for aging population
Estate Improvement Estate Improvement ProgrammeProgramme
Footing Construction Steel Frame Installation
Addition of New Lift Towers
Cladding Installation
2) Difficulties : No additional loading on existing buildings potential nuisance and disturbance to tenants
3) Solutions : Prefabricated steel structures, Raft footings, Machine-room-less lifts
4) Results : Reduce cost, time, waste, pollution and disturbance
32Estate Improvement Estate Improvement ProgrammeProgrammeAddition of Covered WalkwayAddition of Covered Walkway
33INNOVATIONS AND ADDITIONS (IA)INNOVATIONS AND ADDITIONS (IA)
• Performance Enhancements (IA 2)Implementation of Innovative and Proactive Maintenance Schemes
Responsive In-flat
Maintenance Services
Total Maintenance
Scheme
日常家居維修服務全方位維修計劃
34
Three-pronged approach :
• Proactively identify maintenance problems and repair
• Prompt response to tenants’maintenance requests
• Enhanced promotional and education programmes
Total Maintenance Scheme
35Total Maintenance Scheme
36INNOVATIONS AND ADDITIONS (IA)INNOVATIONS AND ADDITIONS (IA)
Responsive In-flat Maintenance Services (RIMS)• Modelled on TMS, RIMS
aim to provide enhanced and responsive in-flat maintenance services for all public rental housing tenants.
• Inspection ambassadors visit flats and carry out repairs proactively
• Comprehensive maintenance database
• Activities to educate tenants
Request by Users Process of Request
Arrange Inspection Site Inspection
Maintenance Works Works Completion
37
3 credits70%70%70%75%Platinum
2 credits60%60%60%65%Gold
1 credit50%50%50%55%Silver
40%40%40%40%Bronze
Unclassified
IAIEQEUSAOverall Achievement
Rating
ENERGY USE (EU)ENERGY USE (EU)
Determination of Overall Grade in BEAM Plus EB
38
84.4 (>75%)Overall Score
5.0100%-5.06 BonusIA
22.325%89%9.811.0IEQ
8.615%57%4.07.0WU
29.930%100%20.020.1EU
4.512%38%3.08.0MA
14.118%78%12.516.0SA
Weighted Achieved Credits
Weighing Factor
% Achieved Credits
Achieved Credits
Applicable Credits
Category
Summary of Credits Achieved in KSW Estate
ENERGY USE (EU)ENERGY USE (EU)
39ENERGY USE (EU)ENERGY USE (EU)
1515Reduction of CO2Emission
EU1
Due to the absence of peak electricity demand data
NANAPeak Electricity Demand Reduction
EU2
The carpark area is less than 10% of total CFA
NANA(2)
Ventilation System in Car Park
EU3
The carpark area is less than 10% of total CFA
NANA(2)
Lighting System in Car Park
EU4
Constraints in existing layout and structural provision
NA5 BRenewable Energy system
EU5
RemarksAchieved
Credits
Applicable Credits
Assessment Elements
40ENERGY USE (EU)ENERGY USE (EU)
No bonus credit obtained for energy charge
4 + 1 B4 + 2 BEnergy ManagementEU10
11Testing and commissioning for non-HVAC system
EU8b
No A/C units provision except the small EMO
NANA(1)
Air-conditioning UnitsEU6
Excluding residential buildings
NANA(1)
Metering and Monitoring for Electrical Loads
EU9a
Credits were already obtained in EU1
NANA(2)
Energy Efficient Appliances
EU7
RemarksAchieved
Credits
Applicable Credits
Assessment Elements
41
EU1 Reduction of CO2 Emission• All 15 Credits are obtained as
reduction of annual CO2 emission by 20% achieved:
44.1% annual energy reduction for domestic blocks (91.14% of total CFA)26.7% for carpark (3.80% of total CFA) 92.7% for shopping centre (4.88% of CFA)
ENERGY USE (EU)ENERGY USE (EU)
42
EU 8b Testing and Commissioning
• 1 Credit for non-HVAC system and equipment
On-going testing, maintenance and necessary adjustment for all building services systems are being carried out.
ENERGY USE (EU)ENERGY USE (EU)
43
• Credits attainable– 1 credit for Energy Audit (Awarded)– 1 bonus credit for carbon audit (Awarded)– 1 credit for monitoring and targets (Awarded)– 1 credit for energy management plan (Awarded)– 1 credit for energy management manual (Awarded)– 1 bonus credit for separate energy charge (Not
awarded)
ENERGY USE (EU)ENERGY USE (EU)
EU 10 Energy Management Plan
44ENERGY USE (EU)ENERGY USE (EU)
Building Improvement Works
CHECK METER SYSTEM
• Installation of electricity check meters and provision of measurement facilities such as current transformers (CTs) and voltage leads to monitor electrical energy usage of major electrical loading
45ENERGY USE (EU)ENERGY USE (EU)
• Public lighting replacement using energy efficient product – electronic ballast with registration under EMSD’s Energy Efficiency Labeling Scheme
Building Improvement Works
BULKHEAD LIGHT FITTINGS C/W ELECTRONIC BALLAST
46Trends of Energy Consumption
47
Way ForwardWay Forward
48WAY FORWARDWAY FORWARD
• In June 2014, Provisional PLATINUM rating under BEAM Plus for EB Version 1.2 was achieved
• Final Assessment Submission preparation is on-going
Preparation for Final Assessment SubmissionPreparation for Final Assessment Submission
49Green Living in Kwai Shing West Estate: Green Roof & Vertical Greening
• Increase of Green Ratio to 27% of the site area in the Estate
• To provide vertical greening at low rise structures such as the pump houses and refuse rooms
50
• To arouse tenants’ awareness of energy conservation and environmental sustainability by installation of Environmental Protection Window
• Installation of a used LCD panel at ground floor lift lobby of all domestic blocks to show the periodic consumption of:
- Electricity- Gas- Water
Tenants’ Education :Awareness on Energy Use
51Close Communication with StakeholdersClose Communication with Stakeholders-- Community Engagement WorkshopsCommunity Engagement Workshops
52Community Engagement WorkshopsCommunity Engagement Workshops
53Estate Improvement ProgrammeChildren Play Equipments & Elderly Fitness
Equipments
Replacement of play equipment installed in or before year 2000Provision of mixed elderly & children play equipment in the same playgroundNew elderly equipment : 13 (40%)New children play equipment : 20 (60%)
Existing Playground in KSW Estate
One of the Existing Playgrounds
54
PROPOSED DESIGN
Community Engagement Workshop– Open Space Design
EXISTING CONDITION PROPOSED DESIGN
EXISTING CONDITION
55Improvement of Elevated Walkwaysat Blocks 6 & 9
Art works by children from neighbourhood school
56
To enhance sustainability of public housing in economic, environmental and social aspects.
To improve and monitor sustainability performance and direct it towards sustainability excellence.
OUR SUSTAINABILITY POLICYOUR SUSTAINABILITY POLICY
Thank youThank you
Q & AQ & A
60
• Simulation method – Performance –based Building Energy Code (PBEC) was adopted to calculate the baseline model annual energy
• Zero-credit model is considered to be equal to baseline model annual energy scale up to 150%
CREDIT ANALYSISCREDIT ANALYSIS
Energy Use (EU)Energy Use (EU)
EU1 Reduction of COEU1 Reduction of CO22 EmissionEmission
61
• As stipulated in BEAM Plus manual, this part of the assessment will only be applied to those buildings where electricity charges are based either Bulf Tariff, Large Power Tariff or maximum Demand Tariff. Buildings not using one of these tariffs will not be assessed for peak electricity demand. Hence, the credits under EU2 shall be not applicable (N/A) due to the absence of peak electricity demand data for the whole of KwaiShing West Estate
CREDIT ANALYSISCREDIT ANALYSIS
Energy Use (EU)Energy Use (EU)
EU2 Peak Energy Demand ReductionEU2 Peak Energy Demand Reduction
62
• The following documentations have been provided to substantiate our ongoing plan for T&C in a systematic and continuous practices
Maintenance Programme for BS Systems;Energy Management System Manual;Energy Management Process Manual; andAnnual Inspections and Testing Reports.
ENERGY USE (EU)ENERGY USE (EU)
EU 8b Testing and Commissioning
63
• 1 credit for conducting Category 3 energy audit;• 1 credit for energy monitoring and targeting
system (demonstrated by energy audit reports)• 1 credit for management plan and its resources
allocation to improve the energy performance of the estate
• 1 credit for energy management manual• 1 bonus credit for conducting carbon audit
CREDIT ANALYSISCREDIT ANALYSIS
Energy Use (EU)Energy Use (EU)
EU 10 Energy Management PlanEU 10 Energy Management Plan
64ENERGY USE (EU)ENERGY USE (EU)
• Obtained ISO 50001 (EnMS) Certification in June 2013
• Adopt a “Plan-Do-Check-Act” approach for continuous improvement to raise energy consumption efficiency
ISO 50001 Energy Management System (EnMS)
Thank youThank you