Post on 01-Mar-2018
transcript
7/25/2019 Consultant Guide.pdf
1/54
1 Pearl VillaGuide for consultantsVersion 1 September 2010
7/25/2019 Consultant Guide.pdf
2/54
7/25/2019 Consultant Guide.pdf
3/54
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.
7/25/2019 Consultant Guide.pdf
4/54
4
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.
7/25/2019 Consultant Guide.pdf
5/54
5
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
7/25/2019 Consultant Guide.pdf
6/54
6
7/25/2019 Consultant Guide.pdf
7/54
7
The Manual
7/25/2019 Consultant Guide.pdf
8/54
8
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
7/25/2019 Consultant Guide.pdf
9/54
9
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
7/25/2019 Consultant Guide.pdf
10/54
10
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
7/25/2019 Consultant Guide.pdf
11/54
11
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
7/25/2019 Consultant Guide.pdf
12/5412
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
7/25/2019 Consultant Guide.pdf
13/5413
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
7/25/2019 Consultant Guide.pdf
14/5414
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
7/25/2019 Consultant Guide.pdf
15/5415
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
7/25/2019 Consultant Guide.pdf
16/5416
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
7/25/2019 Consultant Guide.pdf
17/5417
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)
7/25/2019 Consultant Guide.pdf
18/5418
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
7/25/2019 Consultant Guide.pdf
19/5419
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
7/25/2019 Consultant Guide.pdf
20/5420
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.
7/25/2019 Consultant Guide.pdf
21/5421
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
7/25/2019 Consultant Guide.pdf
22/54
22
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
7/25/2019 Consultant Guide.pdf
23/54
23
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
7/25/2019 Consultant Guide.pdf
24/54
24
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
7/25/2019 Consultant Guide.pdf
25/54
25
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
7/25/2019 Consultant Guide.pdf
26/54
26
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
7/25/2019 Consultant Guide.pdf
27/54
27
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
7/25/2019 Consultant Guide.pdf
28/54
28
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
7/25/2019 Consultant Guide.pdf
29/54
29
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
7/25/2019 Consultant Guide.pdf
30/54
30
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
7/25/2019 Consultant Guide.pdf
31/54
31
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
7/25/2019 Consultant Guide.pdf
32/54
32
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
7/25/2019 Consultant Guide.pdf
33/54
33
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
7/25/2019 Consultant Guide.pdf
34/54
34
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
7/25/2019 Consultant Guide.pdf
35/54
35
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
7/25/2019 Consultant Guide.pdf
36/54
36
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.
7/25/2019 Consultant Guide.pdf
37/54
37
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
0.00 PASS FAIL select extract fan operation FAIL
0.00 PASS FAIL select extract fan operation FAIL
0.00 PASS FAIL select extract fan operation FAIL
0.00 PASS FAIL select extract fan operation FAIL
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
0.00 PASS FAIL select extract fan operation FAIL
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
0.00 PASS FAIL select extract fan operation FAIL
0.00 PASS FAIL select extract fan operation FAIL
0.00 PASS FAIL select extract fan operation FAIL
0.00 PASS FAIL select extract fan operation FAIL
0.00 PASS FAIL select extract fan operation FAIL
0.00 PASS FAIL select extract fan operation FAIL
0.00 PASS FAIL select extract fan operation FAIL
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
7/25/2019 Consultant Guide.pdf
38/54
38
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
7/25/2019 Consultant Guide.pdf
39/54
39
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
7/25/2019 Consultant Guide.pdf
40/54
40
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
7/25/2019 Consultant Guide.pdf
41/54
41
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)
Estidama design submission at building permit application
7/25/2019 Consultant Guide.pdf
42/54
42
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.
Estidama design submission at building permit application
7/25/2019 Consultant Guide.pdf
43/54
43
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.
7/25/2019 Consultant Guide.pdf
44/54
44
6.0 Build villa Related Credits: IDP-R2: Systems and Envelope Performance Verification, RE-R1: MinimumEnergy Performance, SM-R2: Basic Construction Waste Management
7/25/2019 Consultant Guide.pdf
45/54
45
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
7/25/2019 Consultant Guide.pdf
46/54
46
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
7/25/2019 Consultant Guide.pdf
47/54
47
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
7/25/2019 Consultant Guide.pdf
48/54
48
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
7/25/2019 Consultant Guide.pdf
49/54
49
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