Consultant Guide.pdf

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1 Pearl VillaGuide for consultantsVersion 1 September 2010


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Introduction to EstidamaFour pillars of estidamaEstidama, which means sustainability in

Arabic, is the initiative which will transform

Abu Dhabi into a model of sustainable

urbanization. Its aim is to create more

sustainable communities, cities and globalenterprises and to balance the four pillars of

Estidama: environmental, economic, cultural

and social.

The aspirations of Estidama are incorporated into Plan

2030 and other Urban Planning Council (UPC) policies

such as the Development Code. Estidama began two years

ago and is the first program of its kind that is tailored to

the Middle East region. In the immediate term, Estidama

is focused on the rapidly changing built environment. It

is in this area that the UPC is making significant strides

to influence projects under design, development orconstruction within the Emirate of Abu Dhabi.

The Pearl Rating System for Estidama is one of the

key tools for driving and determining of sustainable

development. The completion of the Pearl Rating System

for Communities, Buildings and Villas marks a critical step

in the progression of Estidama by providing a suite of

tools that will be the basis for sustainable development

from master plan to plot.


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Introduction to Estidamathe pearl rating system for estidama

The Pearl Rating System for Estidama aims to address

the sustainability of a given development throughout its

lifecycle from design through construction to operation.

The System provides detailed requirements for rating a

villas potential performance in relation to the four pillars ofEstidama.

The Pearl Rating System is organized into seven categories

that are fundamental to more sustainable development.

Integrated Development Process: Encouraging

cross-disciplinary teamwork to deliver

environmental and quality management.

Natural Systems: Conserving, preserving and

restoring critical natural environments and

habitats.

Livable Villas: Ensuring quality of outdoor and

indoor spaces.

Precious Water: Reducing water demand and

encouraging alternative water sources.

Resourceful Energy: Targeting energy

conservation through passive design measures,

energy efficiency and renewable sources.

Stewarding Materials: Ensuring consideration of

the whole-of-life cycle when specifying anddisposing of materials.

Innovating Practice: Encouraging innovation

and cultural expression in building design and

construction to facilitate market and industry

transformation.

estidama for villas

As of September, 2010, all new villas in Abu Dhabi will

have to achieve a minimum 1 Pearl Rating. This means

that design teams will have to demonstrate that each of

the required credits of the Pearl Villa Rating System will be

achieved. These required credits are as follows:

IDP-R1: Integrated Development Strategy

IDP-R2: Systems & Envelope Performance Verification

NS-R1: Natural Systems Assessment & Protection

LV-R2: Outdoor Thermal Comfort

LV-R3: Minimum Ventilation

PW-R1: Minimum Interior Water Use Reduction

PW-R2: Water Monitoring

RE-R1: Minimum Energy Performance

RE-R2: Energy Monitoring

RE-R3: Ozone Impacts of Refrigerants

SM-R1: Hazardous Materials Elimination

SM-R2: Basic Construction Waste ManagementSM-R3: Storage & Collection of Waste & Recyclables

Villa development teams can also seek a higher rating, up

to Five Pearls, by pursuing voluntary credits. The detailed

requirements of both the required and optional credits are

available from the Pearl Villa Rating System, available for

download at www.estidama.org.

The Pearl Villa Rating System applies to villas and multi

residential buildings of three or less stories above grade

For most villas, the Abu Dhabi Municipalities will review

documentation of the mandatory 1 Pearl credits. Thosedeveloping sites with more than 10 villa dwelling units will

be reviewed by the UPC.


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How to use this guideENGINEER

CONTRACTOR

ARCHITECT

OWNER

This 1 Pearl Villa Guide is intended to complement the

Pearl Villa Rating System, which is the primary reference

document for Estidama compliance. This document

provides guidance to a design team for achieving the

required credits. Key features of the document organization

are highlighted below.

The members of the

design team responsible

for requirementsdiscussed on the page

are highlighted on the left.

E - Engineer

C - Contractor

A - Architect

O - Owner

Tabs on the right organize

the Guide by stages of the

project process, and key timesfor submitting documentation

to the relevant municipality

(e.g. ADM).

ORG - Organize Team and Work

CON - Understand Site Context

OUT - Design Outdoor Spaces

IND - Design Indoor SpacesSYS - Design Building Systems

SUB - Estidama Submission for

Building Permit Application

BUIL - Build Villa

VER - Verify Performance

SUB - Estidama Submission forCompletion Permit Application

Organise

Context

Submission

9

TheIntegratedDevelopmentProcess(IDP)aimstofostercreativityandcoordinationin theprojectdesignanddevelopment.Thefore,anIDP shouldinvolveallmembersofprojectteam,especiallytheclient/ownerorfinancialdecisionmaker.

Avillaprojectteamin itssimplestformwillbecomprised

ofanOwner,an Architect,anEngineeranda Contractor.TypicallytheContractorwillberesponsibleforallsubcontractors.Specialistsmayalsobebroughtonboardtoundertakespecializedworkinareassuchas sustainability,landscapearchitecture,interiordesign,ecologyorenergymodelling.

1.1 Assemble integrated development team

Theprojectteamshouldconsiderseveralpointsasitorganizesitswork:

Eachmemberoftheteam shouldbecomefamiliarwithEstidamaandthe One-Pearlrequirementsunderthe

VillaRatingSystem.ThisisavailableontheEstidamawebsite( www.estidama.org) .

TheIDPprocessshouldbecoordinatedbya memberofthedesignteamwhohasbeencertifiedas aPearlVillaRatingSystemProfessional.Itis notnecessarythatthispersonbeadedicatedsustainabilityconsultant.Theycouldbeanymemberof thedesignteamwhohasreceivedthevillacertification.Moreinformationaboutthiscertificationisavailableaboutthisatwww.

estidama.org.

Everymemberofthe projectteamshouldcontributetothedesign.Inorderto developmoreintegrativeideas,teammembersshouldconsiderthemselvescollaboratorsinthedesign,evenbeforethe Architectevenputspentopaper.AlthoughtheContractoristypicallyinvolvedlaterinthe process,theyshouldbe

involvedasearlyaspossible.

Owner Architect Contractor Engineer

Building Design

LandscapeDesign

EP Engineering

StructuralEngineering

Maintenance

X X

X

X

X

X

X

X X

X

X

Skills

Role

examples:

example1.1TeamStructure

efficientdesigns

buildingsystems

modelling

location

vision

targets

budget

operations

(projectPQP)vision

Passivedesi gns

layout

ecology

suppliers

cost

constructability

ARCHITE

CTENGINEER

CONTRACTOR

OWNER

1

2

3

8

RelatedCredits:IDP-R1:IntegratedDevelopmentProcess

Beforebeginningthedesignanddevelopment

process,the teamshouldbeorganizedin away

thatintegratesthecontributionofdifferenttradesandspecialities.Thiscoordination,calledanIntegratedDevelopmentProcess(IDP)inthePearlRatingSystem,is simplyaframeworktosupportthedevelopmentofholistic,creative,andefficientdesignsolutions.ThePearlsRatingSystemrequiresanIDP toextendthroughouttheprojectlifecyclefrominceptionto design,constructionand commissioning.

Approach

AnIDPcanbethefoundationofasuccessfuldesignand

developmentteam,bringing outthebest inputof each

member.In particular,oncethe designteamhas been

assembled,itfacilitates thedesignprocess by:

Defininga SustainabilityFrameworkwithclear visionand

objectivesand specificindicatorsand targetstomonitor

ongoingperformance.By establishinggoalsearlyand

holdingthemselvesaccountable tothese,the projectteam

canmeet ambitiousgoalsmore efficientlyandavoid any

incidentalslippagein projectperformance.

Enablingtrue CollaborationandContinuitywithin thedesign

anddevelopmentteam. Bydiscussing projectgoalsearly

onand meetingface-to-faceas asingle group,theproject

teamwillbeabletocoordinateworksmoothlyandmake

decisionsmore rapidly.

PromotingSystemThinkingwhen developingstrategiesand

solutions.By consideringthe interconnectionsbetweeneachdiscipline, theprojectteam candelivera high

performingbuilding morecreatively,and withoutexpensive

technologicaladdons.

Astheprojectteamorganizesitsschedule,anIDPframeworkshouldbeincorporatedintothedevelopmentprocess.Thisframeworkcanbebrokendowninto foursteps,whicharedetailedonthefollowingpages.

Process

Systems Thinking

1 2 3 4assemble

integrated

development

team

assemble

integrated

development

team

developan

implementation

strategyfor

continuity

holdregular

design

workshopsfor

collaboration

andcontinuity

1.0 Organise team + work


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The Manual


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Related Credits: IDP-R1: Integrated Development Process

Before beginning the design and development

process, the team should be organized in a way

that integrates the contribution of different

trades and specialities. This coordination, called

an Integrated Development Process (IDP) in the

Pearl Rating System, is simply a framework tosupport the development of holistic, creative,

and efficient design solutions. The Pearls Rating

System requires an IDP to extend throughout

the project life cycle from inception to design,

construction and commissioning.

Approach

An IDP can be the foundation of a successful design and

development team, bringing out the best input of eachmember. In particular, once the design team has been

assembled, it facilitates the design process by:

Defining a Sustainability Framework with clear vision and

objectives and specific indicators and targets to monitor

ongoing performance. By establishing goals early and

holding themselves accountable to these, the project team

can meet ambitious goals more efficiently and avoid any

incidental slippage in project performance.

Enabling true Collaboration and Continuity within the design

and development team. By discussing project goals early

on and meeting face-to-face as a single group, the projectteam will be able to coordinate work smoothly and make

decisions more rapidly.

Promoting System Thinking when developing strategies and

solutions. By considering the interconnections between

each discipline, the project team can deliver a high

performing building more creatively, and without expensive

technological add ons.

As the project team organizes its schedule, an IDP framework should be incorporated into the

development process. This framework can be broken down into four steps, which are detailed on the

following pages.

Process

Systems Thinking1 234

assemble

integrated

development

team

establish

initial

vision and

targets

develop an

implementation

strategy for

continuity

hold regular

design

workshops for

collaboration

and continuity

1.0 Organise team + work


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The Integrated Development Process (IDP) aims

to foster creativity and coordination in the project

design and development. Thefore, an IDP should

involve all members of project team, especially

the client/owner or financial decision maker.

A villa project team in its simplest form will be comprisedof an Owner, an Architect, an Engineer and a Contractor.

Typically the Contractor will be responsible for all

subcontractors. Specialists may also be brought onboard to

undertake specialized work in areas such as sustainability,

landscape architecture, interior design, ecology or energy

modelling.

1.1 Assemble integrated development team

The project team should consider several points as it

organizes its work:

Each member of the team should become familiar with

Estidama and the One-Pearl requirements under the

Villa Rating System. This is available on the Estidama

website (www.estidama.org).

The IDP process should be coordinated by a member of

the design team who has been certified as a Pearl Villa

Rating System Professional. It is not necessary that

this person be a dedicated sustainability consultant.

They could be any member of the design team who

has received the villa certification. More information

about this certification is available about this at www.

estidama.org.

Every member of the project team should contribute

to the design. In order to develop more integrativeideas, team members should consider themselves

collaborators in the design, even before the Architect

even puts pen to paper. Although the Contractor is

typically involved later in the process, they should be

involved as early as possible.

examples:

example 1.1 Team Structure

efficient designsbuilding systems

modelling

location

vision

targets

budget

operations

vision

Passive designs

layout

ecology

suppliers

cost

constructability

ARCHITECTENGINEER

CONTRACTOROWNER

12

3


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1.2 Establish initial vision + targetsThe most important aspect of an IDP is a shared vision and

targets established to achieve it. These should be developed

early in the design process and be aligned with the

minimum 1 Pearl requirements.

Develop a vision for the villa project. This should be a

general, aspirational target that will give coherence tothe design process.

Establish objectives for achieving the vision. These

should be more specific goals.

Establish specific and measurable targets for achieving

the objectives and vision. These will form a framework

for the design process.

Develop solutions for reaching the targets. Identifying

practical, cost effective, integrated solutions will be the

outcome of the design and development process.

Example 1.2, Narrative summarizing vision, objectives, targets (partial)

Vision

Objectives

Targets(credits)

Solutions

The Villa will be a modern high-tech home that will

avoid wastful resource use

Provide sensors and controls to reduce unnecessary

lighting

Reduce lighting loads per square meter 20%

below a typical villa

(RE-R1 Minimum Energy Performance)

Architect: Strategic window placement and shading

Engineer: Automatic daylight-dimming of lights

occupancy sensors and automatic shut-off whenrooms are unoccupied.

12

3

4


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Month 1

Organise team and work

Understand site context

Plan site layoutDesign outdoor space

Design indoor space

Design building systems

Design Submittal

Build villa

Verify performance

Construction Submittal

Workshops are marked with a "W"

Month 2 Month 3 Month 4 Month 5 Month 6 Month 7 Month 8

Preplanning

Design

Construction

Submittal to Municipality

W

W

W

W W W W

After a kick-off workshop and the establishment

of vision, objectives, and targets, it is important to

continue holding multidisciplinary design workshops

to foster creativity and collaboration and to ensure

everyone is aware of important decisions throughout

the development process.

Schedule regular multidisciplinary workshops at the

outset of project planning. These should include the

following topics, at minimum:

site and ecology

orientation and climatic response

energy, water

waste management

indoor comfort

sustainable materials specifications.

Additional workshops can also be scheduled on an as-

needed basis.

Establish a protocol for documenting the occurrence of

meetings. This could take the form of photographs or

signatures of design members present at workshops.

1.3 Plan & hold regular design workshops

Example 1.3: Process chart

workshop documentation


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1.4 Develop an implementation strategyA strategy for implementing the sustainability goals of a villa

should be developed to ensure that sustainability targets

established during design are met during construction and

occupancy. This can be facilitated as the team is organized.

Engage all members of the development team early in the

process, including the contractor and commissioning agent

(who will verify the performance of building systems). Ifpossible, these members should be involved in the whole

IDP process.

Ensure that the Specification documents contain the

sustainability targets and solutions established during

the IDP workshops. There should be language ensuring

compliance with all the mandatory Estidama credits.

Make sure that the villa occupants will receive a Villa

Occupancy Guide. This will provide instructions on efficient

operation and proper maintenance of building systems, as

well as behaviors that reduce the waste of resources. (See

further details in section 7.2 occupancy guide of thisguide.)

implementation

between project stages:

Specifications

Commissioning

Villa Occupancy Guide

Design

Construction

Occupancy


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At the start of the design process, the design team should

seek ways to understand and optimize the relationship

between the villa plot and its surroundings.

A thorough understanding of the sites natural and urban

context will help inform an optimal site layout and villa

design. This will support many design objectives, including:

improved outdoor thermal comfort, energy use reduction,water conservation and ecological enhancement.

There are many resources that can support an analysis

of both natural and urban systems, including the master

planning documents for a villas neighborhood, if available.

Others are listed in Useful Resources.

Natural systems, such as existing habitat and topography,

and urban systems, such as nearby community facilities,

could be examined in separate assessments or one merged

analysis. But ultimately all site information should be

integrated in order to identify opportunities and constraints

associated with building on a particular site. The designteam will then be able to move on to the next step in the

process: planning the site layout.

2.0 Understand site context Related Credits: NS-R1: Natural Systems Assessment & ProtectionUseful resources:

UPC Plant Information Database(www.upc.gov.ae)

Geographical information database for UAE(http://geoportal.abudhabi.ae)

Google Map/Earth

EnergyPlus Weather Data(http:// apps1.eere.energy.gov)

Interpretation Manual of Major Terrestrial Natural and Semi-natural habitat types of Abu Dhabi Emirate, Gary Brown and Benno

Boer, Environmental Research and Wildlife Development Agency,September 2004.

Terrestrial Environment of Abu Dhabi Emirate, Environment AgencyAbu Dhabi, 2008

(www.ead.ae)

Handbook for Phase 1 Habitat Survey a technique for

environmental audit, JNCC, 2007(www.jncc.gov.uk)

Environment Agency

(http://www.ead.ae)

Union for Conservation of Nature, IUCN,

(www.iucn.org)

Wild Flowering Plants of UAE, Environmental Research and WildlifeDevelopment Agency, 2002

Birds of Abu Dhabi - Checklist , Environmental Research andWildlife Development Agency, July 2001

Vascular Plants of Abu Dhabi Emirate, Gary Brown and Sabitha

Sakkir, August 2004

Regulation and Supervision Bureau (RSB)

(www.rsb.gov.ae)

Abu Dhabi Water and Electricity Authority (ADWEA)(www.adwea.com/en/index.html)

Abu Dhabi Water and Electricity Company (ADWEC)(www.adwec.ae)

Abu Dhabi Distribution Company (ADDC)

(www.addc.ae)

Al Ain Distribution Company (AADC)

(www.aadc.ae)

Abu Dhabi National Energy Company (TAQA)

(www.taqa.ae/en/uae.html)

Abu Dhabi Transmission and Dispatch Company (TRANSCO)(www.transco.ae)

Step 3.Design Outdoor

Spaces

Assess Natural Systems+

Assess Urban Systems

IdentifyOpportunities

& Constraints


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2.1 assess natural systems Related Credit: NS-R1: Natural Systems Assessment & Protection

Although sparsely vegetated, the plot includes two

notable ecological assets, depicted in photos: a spiny-

tailed lizard burrow and several ghaf trees.

The existing ghaf trees, as a native species, are

valuable for both habitat and landscaping. They are pre-established, non-invasive and, as a drought-resistant,

salt-tolerant species, will require less irrigation than

other species.

The soil of most of the plot has been found to be sandy

up to a depth of 35 cm with a more rocky substrate

underneath. In the northwestern portion of the parcel,

soil contains more sandy load, in part in relation to the

presence of the trees.

The neighborhood masterplan included an inspection

of the site for potential contamination. As a previously

unutilized location, no contamination has been

identified or suspected on this villa site.

Example 2.1a: Narrative (partial)

At the beginning of the design process and

before site work, the natural systems of the villa

plot should be assessed. If general information

prepared as part of a wider masterplan is

available, this should be used as part of the

submission.Flora & fauna

Most villa plots in Abu Dhabi will contain limited habitat,

but this means that even small areas of vegetation are

particularly important. The following items should be

included in the natural system assessment:

Pictures (with a date and location stamp) and details

of existing flora and fauna assets in the plot. Particular

attention should be paid to valuable assets such as

healthy native trees, shrubs and grasses. See the Plant

Information Database on the UPC website for species

identification information.

Map based on the previous information identifying areas

to be protected, enhanced, allocated for habitat creation/

restoration or connected to adjoining properties.

Soil conditions and topography

Soil conditions and topography are important for

understanding how building foundations should be

constructed, how well different areas will accommodate

landscaping and how the site will drain both rainwater and

irrigation.

Waste & contamination (where applicable)

Any contamination on site by petrol, refuse, or any other

chemical or materials that could be harmful to human

health or the environment should be identified to determine

the need for remediation. If previously unreported

contamination is found or suspected, villa developers should

contact the relevant environmental agency to determine

further testing and remediation requirements.

Microclimate

Local site microclimate, including winds and shaded areas,

should be evaluated to identify synergies with the villa

design. Abu Dhabis characteristic sun angles, diurnal

temperature swings, and relative humidity should also

be fundamental to a villas design. An east-west building

orientation generally maximizes the opportunity for shadingcontrols. Leaving a building or courtyard open to nocturnal

winds facilitates natural ventilation and cooling.

The microclimate generally corresponds to Abu Dhabi

averages with some particularities, as follows:

High midday sun with marginal overshadowing

from adjacent developments to the south.

High levels of solar radiation year-round

Exposed on north and south sides,

Warmer southern winds prevailing during day

Cooler NW winds in mornings & E winds at night

Site allows for optimized building orientation

Existing trees on site provide shaded zones

Adjacent properties can break-up wind regime and

introduce turbulence


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Ghaff tree

and

burrow

Ghaf tree (dated picture) Spiny-tailed lizard burrow (dated)

Example 2.1c: Site plan showing protected featuresExample 2.1b: Time-stamped site photographs

UPC Plant Information Database


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2.2 Identify opportunities + constraints Related Credits:NS-R1: Natural SystemsAssessment & ProtectionEvery villa will benefit from some characteristics of its

context. It will also be limited by other characteristics. A

synthesis of these opportunities and constraints can be

derived from information obtained in the Natural Systems

Assessment and other urban systems analysis. An example

study is shown below, illustrating how opportunities and

constraints can be used to inform the design of a villa.

Exisng trees idenfied for protecon

(Limited adjacent habitat)

Consistently sandy and flat parcel

Set-back requirement from

adjacent villas and roadUlity Connecons

Minimal shading from

adjacent villas

Access to nearby

mosque, retail,

and community center


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3.0 Design outdoor spacesRelated Credits: NS-R1: Natural Systems Assessment & Protection, LV-R2: Outdoor Thermal Comfort, RE-R1: Minimum

Energy Performance, SM-R1: Hazardous Materials Elimination, SM-R3: Storage & Collection of Waste & RecyclablesThe impact of a building can be reduced most significantly

by decisions made early in the design process. The relative

location of buildings, windows, and outdoor areas has a

significant impact on the amount of energy and materials

required to keep a villa comfortable.

The villas orientation and massing can be planned to reduce

heat gains, harness daylight, provide external shading, andshield areas from prevailing winds. Courtyards and terraces

should be comfortably shaded. Landscaping should be

designed to protect and link natural habitat.

Useful resources:

Abu Dhabi weather data from EnergyPlus

(http://apps1.eere.energy.gov/buildings/energyplus)


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Align with cool winds but shelter from

hot winds

Cool breezes can reduce heat build up in external areas

as well as freshen the air in courtyards and externally

accessible areas. Hot winds cause unpleasant and

uncomfortable conditions; building up heat in external areasand increasing the heat load on the villa itself.

Use cool night and early morning breezes, generally

arriving from southern and eastern directions.

Shield the villa from hot winds during the middle and

later part of the day particularly from northwestern

directions.

Position and shape the villa to catch and direct the

wind flow into courtyards and open areas; whilst also

sheltering from the hotter winds.

Stagger roof heights to capture and scoop winds to keyareas.

Consider the position of surrounding buildings,

particularly taller buildings, that can substantially

modify local wind conditions and potentially require a

different villa position and orientation.

In order to generate renewable energy on-site, allocate

space at roof level for future installation of renewable

energy equipment. This area should be equivalent to

at least 15% of the total roof area, excluding the space

taken up for solar collection and mechanical plant.

3.1 Building layoutThe layout of the buildings on the plot has many

ramifications later in the design process, especially with

regard to energy performance and external shading. The

development team should therefore be careful to consider

the following:

Optimize natural light but minimise solar

gains

Position villa toward South and West of the site; this

will generate shaded areas on the North and East sides

Use the shadow cast by surrounding buildings to

provide shade and reduce solar gains

Place windows in shaded areas, recessed into the wall,

or facing North to provide light to indoor spaces

1 12

3

45

6

23


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Example 3.1: Outdoor shading plan

Building and courtyard orientaon minimize solar

exposure on the East and West.

Outdoor area in courtyard

is shaded by building.

Front entrance walkway

is shaded by garage.

Building and courtyard are open

to evening winds from the East.

Principle windows for daylight

are on Northern side of buiding,

inside courtyard for privacy.

3 2 O td th l f t


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The Estidama outdoor shading requirement is to achieve

50% coverage of key areas. It is based on shade cast on the

ground on March 21st (spring equinox, when day and night

are about the same length of time) and June 21st (summer

solstice, the longest day of the year) at 13:00.

For Abu Dhabi, designers should use the following sun

altitude and azimuth: Summer Solstice (alt = 81.4, azi =-94.6), Spring Equinox (alt = 64.2, azi = -161.6). The

architect may use any 3D CAD software and project these

angles to demonstrate compliance. In the diagram below,

h is the altitude, and A is the azimuth.

3.2 Outdoor thermal comfortStep 1

Identify whether the following key outdoor areas will exist

within the villa plot boundary:

Walkways and passageways linking separate buildings

within the plot (separate means buildings on the

plot that are not linked in any way through an indoorenvironment and that the only means of travel between is

through the outdoors).

Walkways between villa entrance(s) to plot access points

(plot access points would be located in a plot boundary

wall via, for example, a gate intended for pedestrian

passage, but would not include car park driveways leading

to gates intended solely for vehicular passage)

Front Entrances to Villas

All amenity areas such as patios, family areas and

courtyards

Balconies and accessible roof spaces (accessible roof

spaces would only include those designed and intended

for roof level amenity use and would exclude any

areas housing HVAC services equipment and renewable

technologies.

Water features (this is any water feature within the plot

boundary but excludes swimming pools)

Step 2

Lay out the outdoor areas within the villa plot to provide

efficiently shaded outdoor areas. See diagrams at right for

design alternatives.

Step 3Use 3D CAD software or free 3D tools to project shade

(e.g. Google Sketchup)

After positioning key outdoor areas requiring shade, use

3D CAD software or 3D tools such as google sketchup to

determine shade patches and to demonstrate compliance.

Simply drawing and copying sun path lines for summer and

equinox scenario will enable quick and easy determination

of shade areas.


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Example 3.2: Outdoor shading plan

Outdoor areas adjacent to a North-

facing wall

The area immediately adjacent to a North-facing wall is

the ideal location for amenity spaces as these spaces maybenefit from free equinox shade so that the only additional

shade required would be for the summer solstice.

Outdoor areas adjacent to a East-facing

wall

The area immediately adjacent to an East-facing wall is also

useful to provide some building self shade. Care should be

taken to identify the shade that is coincident at both the

equinox and solstice.

North-facing Wall

East-facing Wall

Free shade from

building at Equinox

Free shade from

building at Solsticealso permits asmaller additional

shading structurefor Solstice.

Roof area

(next to minimalEast-facing wall)

Outdoor area and

shading structureruns more alongNorth-South axis.

(Alternative is to

provide verticalshading on southern

side (e.g. tree.))

Qualifying areas

shaded on bothEquinox and Solstice

Equinox shading at 1 PM

Solstice shading at 1 PM

Equinox shading at 1 PM

Solstice shading at 1 PM

Outdoor areas adjacent to a South or

West facing wall and

The area in front of a South facing wall is the most difficult

to provide shade for since the lower altitude equinox sun

would require extended shades. Eliminate or minimise

areas requiring shade in front of south facades. Similar to

the South facing wall, spaces on adjacent to a West facing

wall are difficult to shade. Alternatively, use a combination

of vertical trellis in conjunction with horizontal shade or,

where amenity areas are rectangular, orient them with the

long side north to south to provide the easiest shade.

When vertical shading must be provided, this will more

efficiently shade an area when it is closer to the ground (i.e.

less than about 2 m high).

3 3 L d i


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3.3 LandscapingBy considering the landscaping approach early, the design

team can more efficiently protect natural assets and provide

external comfort. The development should consider the

following:

Build around existing natural assets identified during

the Natural Systems Assessment.

Plan landscaped areas that will complement adjacent

natural assets or habitat areas. If possible, extend

habitat corridors.

Although not required for a 1 Pearl Villa, consider

landscaping that does not require extensive irrigation.

This could be accomplished with the use of rock

sculpture, non-vegetative shading structures, and

native shrubs or trees.

Build villa around existing vegetation where possible.

Related Credits:NS-R1: Natural Systems Assessment & Protection

12

3

3 4 Location of external waste storage


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3.4 Location of external waste storageA waste storage area should be located to faciliate recycling

as well as efficient and clean waste management.

Space should be allocated as the villa dimensions are being

established. The Abu Dhabi Center of Waste Management

suggests allowing space for three 240 liter wheelie

(wheeled) bins, or four if organic waste is collected.

Suggested internal dimensions are 1m by 2.1m for threewheelie bins (1m by 2.8m for four), with a height of around

2.2m.

The location of the waste storage space within the villa plot

should be selected considering the following aspects:

Make sure the storage area is easily accessible both

from the inside by residents and from the outside by

waste collection crews and vehicles.

Make sure the storage area minimizes nuisance. For

example, ventilation openings for the waste area

should not be near windows or air intakes for other

rooms. Doors should also shield unpleasant views ofwaste storage from other rooms.

No obstacles, e.g. kerbs, or steep slopes should be

in the path between the waste storage room and

the point where the refuse collection vehicle will

potentially stop for collection. Additionally, the path

should have a hard and smooth surface and be around

1m wide, i.e. enough for a 240 liter wheelie bin to be

moved along it.

Some potential locations include garages or perimeter walls

adjacent to a road where refuse trucks can circulate.

examples:

Conveniently located waste storage area, easily accessible from the street.

1

2

3

3 5 External building materials


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3.5 External building materialsAs the building and plot areas take shape, it is important that

the appropriate materials are selected for external structures

and facade. There are several variables to consider when

specifying these materials.

U- values

The materials that comprise the structure and facade ofthe villa will form its thermal envelope the main barrier

to external heat and solar energy. Keeping the occupied

space cool and comfortable is an easier task with a high

performance envelope.

The U-value is a measure of how much heat passes through

a given material (i.e. how much insulation the material

provides). Estidama credit RE-R1 has the following U-value

requirements.

The UPC has developed a U-Value Calculator to assist

in showing compliance. But, in general, to achieve the

mandated values:

Provide insulation between the earth and concrete floor

slab to reduce heat from the ground warming the rooms

Insulate above the roof slab and apply finishing in a light

color

Include a layer of insulation in the villa walls

In addition to the basic U-value heat transfer reduction the

following factors can also benefit the energy and internal

environment:

Thermal mass

Place concrete elements adjacent to the occupied spaces, to

buffer thermal energy and provide a cool surface feel for the

occupant.

Vapor barrier

Provide a barrier to restrict ingress of moisture through

the villa walls, floor and roof. This is a critical protective

consideration given the high humidity in the UAE.

Surface finishes

Use light colors to reflect sunlight and reduce absorption of

solar energy; This also reduces surface temperatures and

resultant heat gain through the walls and roof.

Glazing design

Glazing design is important for overall villa energy usage,because windows bring light, heat and solar energy into

occupied spaces. In credit RE-R1, there are Estidama

requirements for both window insulation (U-values) and

heat gain (Solar Heat Gain Coefficient (SHGC)). These apply

to both the window and frame as follows:

These factors can be specified to the glazing manufacturers;a wide range of suitable, compliant products are available

within the UAE.

In addition it is also necessary to ensure that the total glazed

area of the villa faade is less than 15% of the conditioned

floor area.

Parameter Target

U-Value (W/m2K) 2.20

SHGC 0.40

Construction Element U-Value (W/m2K)

floor 0.15

roof 0.14

wall 0.32

basement wall 0.28

crawl space wall 0.36


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Wall U-value Calculator

Overview Summary Wall U-value Fl oor U-v alu e R oo f U- val ue Gl azi ng Spe c Ma ter ial s G lo ss ar y

Entering the required informat ion will enable calculation of the wall U-value. The material in each layer can be selected and the thickne ss varied to match the proposed design.

Variations in material properties can be achieved via the materials section, once they have been entered below.

24

Light (W/m.K) (m2

.K/W) (m2

)

0.050 m2.K/W External Surface Resistance North 102.0

North-East

East 80.0

0.020 1.130 0.018 South-East

0.080 0.030 2.667 South 107.0

0.150 0.590 0.254 South-West

0.010 0.510 0.020 West 80.0

0.127 m2.K/W Internal Surface Resistance North-West

2958 Total Area 369 0

Internal Design Temperature

Material

Surface Finish

(m)

Outside

to

Inside

Layer ThicknessThermal

Conductivity, k

Thermal

Resistance, R

Orientation of

Faade

Total Area of

Opaque Faade

Rendering

Cast Concrete (Medium)

Plaster (Gypsum)

Polystyrene

. ota Area 6 .

Co ns tr uc ti on Th ic kne ss 0 .2 60 m

T ot al T he rm al Res is ta nc e 3 .1 36 m2.K/W

Tar get Aver ag e U -val ue 0 .3 20 W/m2.K

E lem ent A ver ag e U- val ue 0 .3 19 W/m2.K

Previous Home Next

Construction Passes RE-R1 U-value Target

Fabric Performance Summary

Overview Summary R oo f U -v al ue G la zi ng S pe c M at er ia ls G lo ss ar y

Elemental U-value Compliance

This sectionprovides asummary ofthe individual elementperformance and confirms compliancewiththe targetU-value requirements

Element Compliant

Wall 0.320 W/m2.K 0.319 W/m

2.K Yes

Floor 0.150 W/m2.K 0.133 W/m

2.K Yes

Roof 0.140 W/m2.K 0.134 W/m

2.K Yes

Glazing 2.200 W/m2.K 2.200 W/m

2.K Yes

Previous Home Next

All glazed elements achieve

average U-value targets

All opaque fabric elements

achieve average U-value targets

Wall U-value Floor U-value

Target Value Design Value

Villa U-value calculator

The U-Value Calculator (available for download at www.

estidama.org) is a spreadsheet that can help the design

team select appropriate materials for the villa and

demonstrate compliance with the U-value requirements.

For each construction element (Floor, Roof, Wall, and

Glazing), there is a page similar to the below:

Enter materialcharacteristics and

thickness.

Calculator quantifiesthe U-value and

confirms whether wallachieves target

The Fabric Performance Summary tab provides a summary of calculated U-valuesand compliance with Estidama targets for each construction element.

Enter internal designtemperature and surface

finish type

Enter Orientationsand Areas of Facade

3 6 Hazardous materials


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As materials are selected, it is also important to ensure that

they do not contain hazardous components excluded by

the requirements of credit SM-R1. The design team should

be aware of these requirements while designing exterior

spaces.

The prohibition of hazardous materials should also be

written into the project Specification documents. (Theseare documents developed during the design stage that

provide detailed instructions for the Contractor to follow

during the construction stage.)

Specify that materials, including walls, insulation, and

interior materials as well, will not contain asbestos.

Specify that wood materials exposed to the outside

and within human reach such as shading structures,

playgrounds, and decking will not be treated with

chromated copper arsenate (CCA).

12

Sample specification language

Example 3.6: Confirmation from

specifications

In compliance with the Pearl Villa Rating System forEstidama, required credit SM-R1 Hazardous Materials

Elimination, the following materials shall not be used in the

Work:

1. Asbestos Containing Materials (ACM)

2. Chromated copper arsenate (CCA)-treated timber, where

timber is used for external structures subject to frequent

and intimate contact. These materials include, but are not

limited to, shading devices, playground equipment and

handrails

3.6 Hazardous materials


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Wood in external structures does not contain

chromated copper arsenate (CCA)

Waste storage near road

Courtyard shading is open to cool eastern winds,

redirects hot northwestern winds

Building footprintaccommodates exisng trees

External shading features for walkways,

courtyard, and accessible roof area

Walls and roofs meet

U-value requirements

Solar Heat Gain targets

and do not contain asbestos

Windows for daylighng on northernside of building

Vercal shading on eastern

and western windows

Front entrance is receded

for shade. Walkway

is shaded by garage.

Water-efficient landscaping

Summary of outdoor strategies

Related Credits: LV-R3: Minimum Ventilation RE-R1: Minimum Energy Performance4 0 Design indoor spaces


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There are many factors to consider when planning the

rooms inside a building. These include strategies to use

daylight, to provide clean and comfortable indoor air, and

to prevent unwanted noise. As the villa is being designed,

these considerations are as important as the more personal

requirements of the future owners.

ApproachThe layout and position of rooms within the villa to suit

daylight and natural ventilation air movement have to

be considered at this stage as per credit RE-R1. It is also

necessary to define glazing specifications to ensure optimal

trade-off between light and solar transmission. This design

should be done bearing in mind credit LV-R3 that requires

that all spaces should be ventilated according to the

requirements of the International Mechanical Code 2009,

Chapter 4, or local code, whichever is more stringent (as

they pertain to both natural and mechanical ventilation).

As in previous steps, materials forbidden by credit SM-R1(asbestos and chromated copper arsenate treated wood)

should not be specified for indoor spaces. All the decisions

affecting the design of the villa indoor spaces should be part

of the Integrated Development Strategy.

useful resources:

ASHRAE Standard 55-2004. Thermal environmental conditionsfor human occupancy International Mechanical Code 2009,International Code Council,

(http://publicecodes.citation.com/icod/imc/2009/index.htm)

International Building Code (IBC) 2009 section 402

Related Credits: LV R3: Minimum Ventilation, RE R1: Minimum Energy Performance,SM-R1: Hazardous Materials Elimination4.0 Design indoor spaces

4 1 Ventilation strategy


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window

window

Ventilation of indoor spaces can be achieved by natural or

mechanical ventilation. Natural ventilation of an occupied

space would be through openings to the outdoors, typically

windows that can be controlled by the villa occupants.

LV-R3 in the Pearl Villa Rating System refers to the

requirements of the International Mechanical Code (IMC),

section 402, that occupied rooms (such as living rooms,

dining rooms and bedrooms) should have a minimumopenable area of 4% of the floor area being ventilated. The

procedure undertaken by the designer for establishing and

calculating the openable area is shown below.

Step 1

Once the internal layout of the villa is determined, develop

a spreadsheet listing the internal floor areas for each of the

rooms along with a description of whether or how they will

be mechanically or naturally ventilated. Often a plan view

such as that shown will be useful to convey the room and

window sizes. Internal rooms (such as dressing rooms) that

are intended to be ventilated through an adjacent space

should also be highlighted as the requirements for these

spaces will differ. The next steps will be iterative to arrive at

the best solution.

1. Floor Plan & Area

openable area if opening is 150 mm or less

openable area if opening is more than 150 mm

4.1 Ventilation strategyStep 2

Determine the size and number of windows that are to

be provided to the space. This will usually be a result of a

balance between daylight, glare, heat gain, aesthetics and

cost.

Step 3

Highlight the actual openable area of the window (illustrated

in red below). For top-hung windows that cannot open

further than 150 millimeters (mm), the openable areas are

the rectangular opening between the tip of the window to

the edge of the sill and the two triangular side openings on

the side. For windows that can open further than 150 mm,the openable area is the full opening of each window.

Example 4.1: Natural ventilation plans and window details

2. Overall Window Dimensions

3. Identify Openable Window Area


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window

window

window

Step 4

Establish the key dimensions associated with these

openings identified in step 3. For example, the distance

between the sill edge and the frame will be a key dimension

that will need to be obtained from window manufacturers

or suppliers.

4. Establish Key Dimensions

Step 6

Finally, total up all the areas for each of the openings for

each of the windows associated with a particular space and

ensure that this area is more than 4% of the internal floor

area of that space. This requirement needs to be achieved

for all relevant occupied spaces.

Step 5

Also consider the effect of walls surrounding the window

frame as these will typically restrict the size of the side

openings and need to be accounted for. The designer

can use dimensioned hand drawings or CAD software to

establish the areas of the openings.

5. Additional Considerations: Wall Influence

Adjoining spaces

In the example, the dressing room is an internal space

(rest of floor plate not shown) and is intended to be

ventilated through the primary bedroom. In this case the

total floor area is the sum of the areas for the dressing

room and primary bedroom. The size of the openings in

the primary bedroom needs to exceed 4% of this total

floor area. In addition, the size of the opening between

the dressing room and primary bedroom (shown in

green) needs to be least 8% of the dressing room

internal floor area and no less than 25 sq ft (whichever

is greater).

4 2 Waste storage


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Separated waste streams (internal kitchen)

4.2 Waste storageInternal waste storage

Storage that allows for separating different waste streams

(waste that can be recycled and waste that cant) should be

provided in the kitchen. This can be in the form of pictured

at right.)

External waste storage finishes

The waste storage space should be designed following

these principles:

Security. Waste bins* should be accessible from

outside the villa but undesired access from the outside

should be blocked. Therefore, a double set of doors

should be used. Internal doors should be individually

lockable from the inside of the villa whilst refuse

collection vehicle crews should be able to open the

external doors from the outside with a generic key.

The doors should allow for an opening of at least 0.9mto manoeuvre the bins.

Lighting approrpiate for the waste room should be

provided. The lights should be able to withstand

splashing from water cleaning and ideally fitted with

low energy lamps and with automated switching.

Enough constant ventilation, either natural or

mechanical, has to be supplied to the waste room

to avoid odors or contaminant build-up. Natural

ventilation inlets should not be less than 0.2 m2, and

be fly and vermin proof. They should be located as

near to the ceiling and the floor of the room as possibleand away from other air intakes or windows.

Cleaning. A hose union tap connected to the water

supply should be provided and the walls and floor

of the waste storage room should be tiled. The floor

should have a slope towards a gulley positioned so

that it does not interfere with the wheels of the bins

and connected to the wastewater network with a

permanent smell trap.

* Check with the Abu Dhabi Center of Waste Management

about provision of external bins.(http://www.cwm.ae/)

1

5

2

3

4

Example 4.2: Depictions of waste

storage room connection

Waste storage area (internal view)

Waste storage area (external view)

5.0 Design building systemsRelated Credits:LV-R3: Minimum Ventilation, PW-R1: Minimum Interior Water Use Reduction,

PW-R2: Water Monitoring, RE-R1: Minimum Energy Performance, RE-R2: Energy Monitoring, RE-R3 O I t f R f i t S t SM R3 St & C ll ti f W t & R l bl


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The lighting, shading and ventilation strategies established

earlier in the design process will reduce the requirements

for building systems. But careful detailing of systems to

providing cool, comfortable, and convenient indoor spaces

can reduce the villas environmental impact still more.

Approach

The villa must comply with all ventilation requirements set

out in the International Mechanical Code 2009, Chapter 4 or

local code, whichever is more stringent (for both natural and

mechanical ventilation) as per credit LV-R3.

Consistent with credits RE-R1, the air conditioning system,

especially fans, have to meet performance requirements.

Fixed lighting systems are also required to achieve

performance standards, while exterior lighting elements

must have daylight sensors.

Credit RE-R2 requires energy sub-metering, which have to

be clearly labeled and provided in easily accessible locations.They must measure, at minimum, lighting electrical

distribution (for both internal and external lights), small

power electrical distribution, and air conditioning (including

external condensers and associated pumps and air handling

units).

Credit RE-R3 specifies that only refrigerants with an ozone

depletion potential of zero can be used for any purpose

on-site.

Efficient water fixtures and metering are required by credits

PW-R1 and PW-R2. Estidama requires specific flows rates

for water fixtures, fittings, and appliances, as well as

automatic shut-off control. As with energy meters, watermeters must be easily accessible and clearly labelled, to

sub-meter the villas external water use. This must have a

pulsed output and be capable of remote monitoring.

5.0 Design building systemsCredit SM-R3 requires that the waste room be separately

ventilated to prevent odors. This can be either natural or

mechanical ventilation. Waste rooms must also be easy to

clean, with a water supply, tiled internal surfaces, and a

gulley connection.

Under the requirements of credit IDP-R1, decisions

regarding the design of building services should be agreed in

integrated development workshops.

useful resources

ASHRAE Handbook of Fundamental s 2009.

ASHRAE/ASHRAE/IESNA 90.1 2007: Energy Standard for

Buildings Except Low- Rise Residential Buildings.

ANSI/ASHRAE Standard 90.2-2007: Energy-Efficient Design of

Low-Rise Residential Buildings.

International Mechanical Code 2009, Chapter 4.

R3: Ozone Impacts of Refrigerants Systems, SM-R3: Storage & Collection of Waste & Recyclables

5.1 Energy system


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Air conditioning

Although the cooling requirements of a villa will be

reduced by minimizing heat gain through windows and

other external surfaces, energy must also be used to

condition spaces in Abu Dhabis climate. Efficient system

performance is a critical factor in achieving reductions in

energy usage.For most villas the performance of the air-conditioning

system is based upon (a) the efficiency of energy

conversion from electricity to coolth (the opposite of

heat) and (b) the effectiveness of the fans driving the

air flow. There are requirements for both aspects of the

system.

The minimum air conditioning seasonal average Coefficient

of Performance and maximum fan power are:

(a) (CoP) = 3.40

(b) Maximum fan power = 2.80W/l/s

LightingGood lighting design can also reduce unnecessary energy

waste, both internally and externally. Internal lighting

energy is restricted on a basis of power used per unit area

for the following different zone types:

5.1 Energy system

Zone Type Power Density (w/m2)

family dining 22.6

food prep 12.9

restrooms 9.7dormitory/living quarters 11.8

lounge/recreation 12.9

corridor/transition 5.4

External lighting is to be controlled by daylight sensors,

which will reduce energy wastage by ensuring that they are

only operational when required.

Appliances

It is also necessary to ensure that energy usage associated

with household appliances is minimized. This can be

achieved through demonstrating that any appliances,

lighting fittings and other electrical items not already

detailed achieve a suitable energy efficiency performance.

This means a performance rating of at least B under theEU Energy Rating system, or an equivalent level from a

similar rating system, including the U.S. Energy Star rating

system.

Renewables

RE-R1 requires that 50% of the villas total annual hot

water usage comes from a renewable source. This can be

most easily achieved through the use of a Solar Thermal Hot

Water system. From the information used in the Villa Water

calculation tool (PW-R1) the villa water usage (based on

occupancy) can be provided to the system supplier who can

ensure that the RE-R1 target of 50% generation is satisfied.

Swimming pools

If the villa has a conditioned swimming pool (heated or

cooled), a pool cover must be provided that achieves a

minimum U-value of 0.47W/m2.K

5.2 Energy metering


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The Regulation & Supervision Bureau (RSB) has required

new villas to install only a single electric meter, which can

record both cumulative energy consumption as well as

incremental values using a pulsed output.

While this meter provides useful data, it provides limited

information about where energy is being consumed. and

provides littlle guidance for reducing energy use associated

with particular activities.

Estidama credit RE-R2 therefore requires separate metering

of the following:

Lighting electrical distribution board (including internal

and external)

Small power electrical distribution board

Air conditioning (at a minimum all external condensers

and where applicable associated pumps and air

handling units)

Any single piece of plant exceeding a maximum load of20kW

If a data collection facility is installed, meters must have

data logging capability and be connected to the central

system to monitor ongoing energy consumption.

5.2 Energy metering

123

4

5.3 Refrigerant


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Although many ozone-depleting refrigerants havebeen banned internationally and within the U.A.E,

illegal systems can still be found.

Refrigerant

Many of the refrigerants currently used in air conditioning

systems cause damage to the ozone layer, which allows

greater levels of damaging radiation to reach the earths

surface. This effect can be reduced by the appropriate

selection of refrigerants with a zero ozone depletion

potential (ODP).RE-R3 requires that all refrigerants installed within the plot

have a zero ozone depletion potential.

For many of the smaller villa systems this would require

avoiding refrigerants such as HCFC-22 and choosing

refrigerants with ODP levels of zero, for example HFC-407c.

g

Chlorofluorocarbons ODP

CFC-12 1.0

Hydrochlorofluorocarbons

HCFC-22 0.055

HCFC-123 0.02

Hydroflurocarbons

HFC-134a 0

HFC-245fa 0

HFC-407c 0

HFC-410a 0

HFC-417a 0

Natural Refrigerants

Carbon Dioxide (CO2) 0

Ammonia (NH3) 0

Propane (C3H8) 0

Isobutene 0

Air 0

Water 0

5.4 Ventilation


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International Mechanical Code,Table 403.3

Dwelling

Occupancy

Classification

People Outdoor

Air Rate in

Breathing Zone

Area

outdoor

Airflow Rate

Default Occupancy

Density

Exhaust Airflow Rate in

cfm/ft2

Exhaust Airflow

Rate in m3/s/m2

Kitchens N/A N/A N/A 25/100 per room continuousfan / intermittent fan)

0.13/0.51

Living Areas 0.35 ACH but not

less than 15cfm/person (0.0762)

N/A Based upon number of

bedrooms. First bedroom, 2;each additional bedroom, 1

N/A

Toilet Rooms andbathrooms

N/A N/A N/A 20/50 per room (continuousfan / intermittent fan)

0.1/0.25

Ventilation

Ventilation rates for the villa must comply with the

requirements of the International Mechanical Code, the table

details private dwellings (as below). Use the Pearl Minimum

Ventilation Calculator, entering program details for an

automatic generation of ventilation requirements.

The calculator will automatically list the required flowrates in liters/second and/or window opening sizes. which

the mechanical designer should use to determine the

appropriate fan selection.


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Estidama Villa Ventilation Calculator v1.01 Pearl Compliance

InputCells

Villa Space Name

(Must BeUnique )

SetPrimary

Bedroom

IMC Occupancy

Class

FloorArea

(m2)

Space has

openable

windows?

Space Total

WindowArea

(m2)

TotalWindow

Openable Area

(m2)

T ar ge t P as s / F ai lVentilatedthrough

thisadjoining space

OpenArea

BetweenSpaces

(m2)

Pass/Fail

RequiredExhaust

AirFlowrate

(liters/sec)

ExtractFan

Operation

Ventilation

Method

Fan

Flowrate

(liters/sec)

Pass/Fail

main kitchen Kitchen 12 Yes 10.00 0.50 0.48 PASS F AI L s el ec t e xt ra ct f an o pe ra ti on Windows PASS

Living Room Living Area (non-bedroom) 22 Yes 10.00 1.20 0.88 PASS F AI L s el ec t e xt ra ct f an o pe ra ti on Windows PASS

kitchenette Kitchen 6 No 0.24 FAIL Living Room 2.33 PASS 47.2 intermittent Extract Fan 50.00 PASS

Master Bedroom primary Living Area (bedroom) 12 Yes 8.00 0.50 0.48 PASS F AI L s el ec t e xt ra ct f an o pe ra ti on Windows PASS

2nd bedroom Living Area (bedroom) 10 Yes 7.00 0.40 0.40 PASS living room FAIL select extract fan operation Windows PASS

main bathrrom Toilet / Bathroom 10 Yes 5.00 0.40 0.40 PASS F AI L s el ec t e xt ra ct f an o pe ra ti on Windows PASS

2 0.00 PASS FAIL select extract fan operation FAIL

2 0.00 PASS FAIL select extract fan operation FAIL

0.00 PASS FAIL select extract fan operation FAIL







PASS 0.00 PASS FAIL select extract fan operation FAIL



Location

Building/ProjectName

Company

ContactNumber

Date ofIssue

Villa Project

OverallStatus

PersonResponsible

Project Info

Project Details

ProjectID

Numberof Bedroomslisted

inIMC Occupancy Class

Mechanical Ventilation Calculator

Numberof bedrooms

invilla

PearlQP








Last Revised: August 2010 Report a Template Bug : tbc

Enter project details

Enter project spaces, occupancytypes, floor area, and windowdimensions

Calculator assesses whether

areas meets requirements

Enter open area and ventilation

methods for adjacent spaces

Villa ventilation calculator

Example 5.4: calculations showing fresh air ventilation rates

5.5 Water fixtures


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Optimize interior water consumption

Interior water consumption within a villa is attributed

to fixtures and appliances such as taps, toilets, washing

machines etc. Large water savings can be made simply by

using lower flow fixtures and highly efficient appliances.

PW-R1 sets a minimum standard for fixture flow rates and

appliance efficiencies. These flow rates are as follows:

In order to comply with PW-R1, a project must demonstrate

that the proposed villa design water consumption is less

than or equal to the baseline villa water consumption

based on the flow rates prescribed above. This must be

demonstrated by EITHER:

Simply installing the fixture/appliance with the

prescribed flow rates as given above.

OR

Utilizing the Estidama Villa Water Calculator v1.0: 1

Pearl Compliance to demonstrate that the proposed

villa design water consumption is less than or equal to

the baseline consumption through trade-off measures.

The second route allows the project to trade-off between

flow rates so that the efficiency of certain fixtures/

appliances may be relaxed only if others are improved

upon to ensure the overall proposed villa design water

consumption is less than or equal to the baseline.

On the next page is an image of the Estidama Villa Water

Calculator v1.0:1 Pearl Compliance. This will help the

design team select appropriate fixtures and document

compliance with the Estidama requirements.

Fixture/Appliance Unit Rate

Kitchen Taps liters/minute 6.0

Bathroom Washbasin

Tapsliters/minute 6.0

Toilets Dual Flush liters/flush 6.0/4.0

Bidets liters/minute 6.0

Shower Head liters/minute 9.5

Ablution Fixtures liters/minute 6.0

Dishwashers liters/place setting 1.3Washing Machines l iters/kg of dry

load8.5

12


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Villa water calculator

Example 5.5: Villa water calculator output

Enter project details

Calculator estimates water usage

Calculator confirms whethercredit is achieved.

Enter information about

fitting flow controls/sensors

Enter fitting flow rates

5.6 Water metering


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Water metering

PW-R2 requires a sub-meter to be installed on the pipe

supplying water to the villa exterior (e.g. landscaping, water

features etc.). In combination with the meter for the whole

site, this will allow water usage inside the villa to be tracked

as well.

The meters are also required to have a pulsed outputcapable of remote monitoring. This, and a better

understanding of both interior and exterior water use will

help determine areas of high water consumption, identify

leaks quickly, and pursue opportunities to save water.

Note: In addition to this, all swimming pools in excess of 30

cubic meters are required to be separately metered as per

the requirements of the Regulation and Supervision Bureau

(RSB) Water Supply Regulations 2009 Guide.

Primary incoming meter

Exterior sub-meter

Kitchen taps

Bathroom taps

Toilets

Bidets

Showers

Baths

Ablution fixtures

Appliances

Irrigation

Water features

Swimming pools

Example 5.6: Diagram of water monitoring

Estidama design submission at building permit application


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IDP-R1: Integrated Development Process

Team structure listing team members and their roles (Example 1.1)

Narrative summarizing initial vision, objectives and targets set jointly by the project team for the project (Example 1.2)

Process chart for the IDP developed at project inception, listing design milestones and planned workshops (Example 1.3)

Implementation strategy for achieving transition between project stages and project packages

NS-R1 Natural Systems Assessment & Protection

Narrative on flora and fauna, soil conditions and topography, waste and contamination (where applicable) and microclimate (Example 2.1a)

Photographs with time-stamp and location confirmation (e.g. GPS, Global Positioning System, coordinate stamp) (Example 2.1b)

Site Plan showing protected features (Example 2.1c)

LV-R2 Outdoor Thermal ComfortShort narrative of outdoor shading systems and plan showing shading provision and the minimum % of shading achieved (Examples 3.1/3.2)

LV-R3 Minimum Ventilation

If natural ventilation strategy is selected then provide:

Narrative, plans and details of windows describing how the villa design meets the credit requirements for natural ventilation. (Example 4.1)

Calculations demonstrating compliance with the minimum openable area criteria for all occupied spaces.

If mechanical ventilation strategy is selected then provide:

Narrative of the mechanical ventilation strategy as well as mechanical drawings and specifications details from manufacturers of the ystems used to meet the credit

requirements for mechanical ventilation system;

Calculations showing fresh air ventilation rates. (Example 5.4)



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PW-R1 Minimum Interior Water Use Reduction

Villa Water Calculator output showing a water consumption lower than the baseline using efficiency measures only (Example 5.5)

Brief narrative of proposed water conservation strategies including specifications of proposed fixtures, fittings and appliances.

PW-R2 Water MonitoringBrief narrative or diagram of how water use will be monitored with extracts from specifications and drawings indicating type, extent and location of the

sub-meter (Example 5.6)

RE-R1 Minimum Energy Performance

If the prescriptive method is followed then provide:

Narrative including manufacturers details for each installed energy use device detailing its energy rating / unit efficiency / power rating of

the proposed electrical item and how the requirements of each section of the credit will be achieved;

Narrative, specifications, calculations and design drawings describing the Hot Water System generation strategy, the type and location of theproposed system and confirming that the required level of HWS generation will be achieved

Drawings showing potential location and indicative services routes for future installation of renewable energy systems.

Sections / details for each building faade element, e.g. roof, walls, floor, glazing showing how they meet the credit requirement.

Summary list, specification extracts and proof of certification by Energy Star program, EU Energy Efficiency Labeling Scheme or equivalent

of all appliances to be installed in the building.

RE-R2 Energy Monitoring

Brief narrative of the metering strategy including metering equipment specifications and schematics indicating the type, extent andlocations of all metering.

RE-R3 Ozone Impacts of Refrigerants Systems:

Specification of all proposed refrigerant systems confirming ODP of each refrigerant is zero.



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SM-R1 Hazardous Materials Elimination

Confirmation and extracts from specifications indicating that no Asbestos-Containing Materials (ACMs) or Chromated Copper Arsenate

(CCA)-treated timber are to be used in the project (Example 3.6)

Where portions of the project are reused from an existing building:

Results of a hazardous materials survey following internationally recognized standards, e.g. ASTM E 256-04, documenting the existence, if

any, of ACMs in the building and an asbestos removal and disposal plan if ACMs are found,

SM-R2 Basic Construction Waste Management

Construction and Demolition Waste Management Plan including a narrative of the strategy to divert waste from landfill, estimated weight

or volume of generated waste (Example 6.1a) and name and location of potential reclaim/recycling haulers. If applicable, also include a schedule

of items to be recycled/salvaged.

SM-R3 Storage & Collection of Waste & Recyclables

Drawing(s) indicating location of the waste storage in the kitchen, the plot and proposed access for collection services from the nearestroad/passage (Example 4.2)

Drawing indicating the waste storage room connection to the water and wastewater networks as well as lighting, floor, wall covering, and

security specifications

Product sheets for the proposed waste bins to be used in the kitchen and central waste storage facility.


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6.0 Build villa Related Credits: IDP-R2: Systems and Envelope Performance Verification, RE-R1: MinimumEnergy Performance, SM-R2: Basic Construction Waste Management


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useful resources:

Environment Agency of Abu Dhabi: Technical Guidance Document:Development of Construction Environmental Management Plan(CEMP) Onshore.

ISO 14000: 2004 Family of Standards on Environmentalmanagement systems.

Once all the design has been completed, the process of

building the villa will start. This step covers the construction

process from the potential demolition of existing structures

to the completion of a new home.

During this process, it will be necessary to maintain

communication between the members of the design team,

contractors, and developers, to ensure that the villa is built

to the correct design specifications. This will be facilitatedby the IDP process and the implementation strategy agreed

at the beginning of the design process.

Approach

Estidama credit SM-R2 requires that 30% of the demolition

and construction waste be salvaged or recycled (by weight

or volume). This means the contractors need to prepare a

construction and demolition waste management plan before

demolition begins. This plan is to be supported by the Villa

Waste Calculator. During construction, documents will need

to be collected to confirm the target has been achieved.

Credit IDP-R2 requires that envelope components

assembled off-site be tested prior to installation. Standard

envelope components must have a pre-testing certificate,

while custom-made cladding systems must be tested off-

site.

Similarly, compliance with credit RE-R1 requires ensuring

required fabric and system performance levels are achieved

in the materials actually used. Credit SM-R1 requires

guaranteeing that hazardous materials do not make their

way into the project. There can be no asbestos or exposed

wood treated with chromated copper arsentate.

6.1 Construction waste management


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Before starting any demolition or construction, it is

necessary to develop a construction and demolition (C&D)

waste management plan. This should incorporate:

Estimates of waste generation. The Villa Waste

Calculator will help to estimate the type and amount

of waste expected for the project. This can be

downloaded from the www.estidama.org.

A destination for each waste type leaving the site. For

example, specify that aggregates will be transported

to the municipal C&D recycling facility, or that fit-out

leftovers will be disposed to landfill.

Identification of materials to be salvaged or recycled.

This percentage needs to be at least 30% of the

estimated waste generation, in weight or volume.

A location for storing waste on-site during

construction. This should be conveniently located near

the materials delivery area and large enough to allow

for separating at least aggregates and other wastestreams.

An example of the above is shown at right. These elements

should be updated with information compiled during

construction.

On-site waste segregation area

Example 6.1a Schedule of items reclaimed/recycled

Total waste generated: 585 tonnes

Total waste landfilled : 211 tonnes (36.1%)

Total waste diverted: 374 tonnes (63.9%)

LANDFILLED C&D WASTE CALCULATION IN TONNES

Landfill material description Landfill hauler or location Quantity of landfilled waste

General waste March 2010 Al Dhafra Landfill 15

General waste April 2010 Al Dhafra Landfill 31

General waste May 2010 Al Dhafra Landfill 70

General waste June 2010 Al Dhafra Landfill 65

Pallets April 2010 Al Dhafra Landfill 10

Pallets May 2010 Al Dhafra Landfill 5

Pallets June 2010 Al Dhafra Landfill 15

DIVERTED C&D WASTE CALCULATION IN TONNES

Diverted/recycled material description Diversion/recycling hauler or locationQuantity of diverted /

recycled waste

Concrete from demolition March 2010 Municipal C&D plant 150

Concrete from demolition April 2010 Municipal C&D plant 200

Metal March 2010 Local metal recycler 4

Metal April 2010 Local metal recycler 3

Metal May 2010 Local metal recycler 1

Metal June 2010 Local metal recycler 1

Construction and Demolition Waste:

585 tonnes

36.1%

63.9%

Landfilled

Salvaged/

Recycled

SALVAGED C&D WASTE CALCULATION IN TONNES

Diverted/recycled material description Diversion/recycling hauler or locationQuantity of diverted /

recycled waste

Spandrel panels from faade June 2010 Reused in new building 15

1

2

3

4


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Villa waste calculator

Estidama villa waste calculator v1.0 - 1 Pearl

Step 1 - Project Details

Step 1 Step 2 Results

ReportaTemplate Bug:

Input Cells that may bechanged by designteams

Existing Building Details

Is therean existingbuilding in theplot? Yes

Instructions:

* Designteams arerequired toenterinformation inall pinkinput cells not greyed out todisplay

theresults inthe Results worksheet. Pleasedo not proceed if thereare any warningmessages in

any of theSteps.

* Thenumberof residents should includemaids

Note: This toolis foruse withthe PearlRatingSystem only and todemonstrate compliancewith

thePearl Ratingrequirements. It is not a designtool.

Villa

123456789

AbuDhabi

Test villa

Project Details

Building/Project Name

Location

PearlRating System

Design

TotalGross Floor Area, m2 500

Rating System Details

Project ID

PearlRating Stage

Existing building Override defaultdemolitionwaste values forvillas? No

Attribute Unit Value Demolitionwaste generated inm3 per 100 m2 of building: 50.0

Gross floorarea m2 250 Please write the source reference of this figure:

LastRevised:August 2010 Next

n Y

n ru c n

n u

r r r u r n nrr u n u r

c c

r u n u

r r r u . r nn

c

Estidama villa waste calculator v1.0 - 1 Pearl

Step 2 - Diversion from landfill

Step1 Step2 Results

Construction and Demolition (C&D) waste recycling and salvage rates

Salvageand recyclingof Construction andDemolition waste

Non-technicalfactors

Willa construction anddemolition wastemanagementplan bewritten? (RequiredSM-R2) Yes

Willwaste education beprovidedtoconstruction contractors? Yes

Willwaste education beprovidedtodemolition contractors? Yes

Willwaste beadequately segregatedand temporarily storedon-siteduring construction? Yes

Willwaste beadequately segregatedand temporarily storedon-siteduring demolition? Yes

Willtherebe a person responsibleof C&D wastemanagement? No

Technicalfactors Construct i on Demol it i on

Whatpercentageof materialfromexistingbuilding (in weight) willbe reusedin thenewone? 5% Salvagerate - 5%

Willconstruction wasteberecycledin a recyclingplant(s)? Yes Non-technicalcapturerate 70% 70%

Which plant(s)? Technical capture rate 90% 90%

Willdemolition wasteberecycledin a recyclingplant(s)? Yes Overallcapture rate 63.0% 64.9%

Which plant(s)?

Overrideautomaticvalues andintroducecustomisedC&D capturerates? No

Construction Demolition Please insertthe source reference for these values:

63.0% 64.9%

Operational waste diversion from landfill rates

Residential

Non-technicalfactors

Willadequatewaste storagebeprovidedw ithin thekitchen? (RequiredSM-R3) Yes

Wherewilladequate wastestorage beprovidedfor thevilla? (RequiredSM-R3) In the plot

Wastestoragedescription:

Previous Next

Municipalplant

Municipalplant

Waste roomin perimeter wall

NOTE: Capture ratesrepresentthe expectedsalvage/recyclingratesof the

projectfor construction and demolition waste atthe design stage or those

achievedduring the construction stage.

They are notthe finalsalvage/recyclingrates thatwill be achievedin the

projects. These are shown in the Resultsworksheet.

Capture ratesare always


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Finishing construction is not quite the last step in an

Estidama project. Key to ensuring sustainability is to verify

that the building will perform according to the design

specifications. The performance of the structure and

building systems should be evaluated, and occupants should

be informed how to operate and maintain the building for

best results.

Approach

Credit IDP-R2 requires that a Competent Professional verify

the building systems performance and test the building

envelope for water ingress and air tightness. The Project

team must also prepare an Occupant Handbook. The

envelope and systems should comply with the requirements

of credit RE-R1.

Information compiled by the energy and water sub-meters

required by credits RE-R2 and PW-R2 credits can be used

to facilitate both verification and guidelines for proper

operations.

Although credit IDP-R2 is completed after construction, it

should be anticipated earlier in the design process. Some

systems need to be tested before installation.The owner

may also wish to reference verification in the Engineers

contract early on. Note that the person who conducts the

verification can be from a company involved in the design

process, but the individual who verifies cannot be directly

involved in the project for any other purpose.

7.1 Systems + envelope verification


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Envelope verification

The value of high performance materials can be negated

if they are not properly installed. Energy performance

is affected by the air tightness, which is a result of the

materials used and the quality of the construction methods.

Only a good combination of the two will achieve a suitably

low infiltration rate.

Wall ingress and the formation of condensate will also

cause internal water damage to the villa, degrading the

performance over time and contributing to health hazards

such as mold growth.

Therefore it is necessary to:

Confirm all standard envelope products have a pre-

testing certificate prior to installation

Establish a methodology for construction and

installation that will minimize the infiltration rate.

Larger multiple villa projects must also test the buildingenvelope of representative villa prototypes for water

ingress and air tightness after installation. This must

be conducted by a professional with a minimum of 2

years experience in envelope verification. The required

infiltration limit is 0.35 ach (air changes per hour, i.e.

a quantity of air averaging 35% of the total volume of

air will leak through the fabric each hour).

Systems verification at construction

completion

Building systems should also be verified to ensure they

perform according to design standards. Systems can

perform poorly because they are poorly manufactured.

damaged in transit, o

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