Sustainability design 120303

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1 An Introduction to Sustainability Design By Professor Moustafa M. Elsayed Consultant, EGEC 1 Outline Sustainability Sustainable Sites Efficient use of Water Energy and Atmosphere Efficient use of Energy Materials and Resources Indoor Environmental Quality Sustainability Design Authorities Assessing Sustainability Rating Systems LEED (USA) QSAS (Qatar) 2

Transcript of Sustainability design 120303

1

An Introduction to

Sustainability Design

By

Professor Moustafa M. Elsayed

Consultant, EGEC

1

Outline

• Sustainability

• Sustainable Sites

• Efficient use of Water

• Energy and Atmosphere

• Efficient use of Energy

• Materials and Resources

• Indoor Environmental Quality

• Sustainability Design Authorities

• Assessing Sustainability

• Rating Systems

• LEED (USA)

• QSAS (Qatar)

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Sustainability

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Sustainability

Defining Sustainability

• Meeting the needs of the present without compromising the

ability of future generations to meet their own needs”

• The idea of sustainability, is to ensure that our actions and

decisions today do not inhibit the opportunities of future

generations.

• The concept of maximizing the effectiveness of resources use

while minimizing the impact of that use on the environment

Economy Ecology

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Sustainability

Impacts Resulting from Built

Environment

Air Pollution

Land Use & Contamination

Fossil Fuels

Depletion

Water Depletion

Water Pollution

Materials Depletion

Human Health

ClimateChange

Impacts of Construction Industry

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Providing building services engineers with guidance on how to

respond to the sustainability design.

It describes:

• the actions that building services engineers should take to

enable their work to deliver sustainable outcomes

• how they can influence the work done and decisions made by

clients and other professionals.

To create a sustainable built environment that minimizes

ecological impact through the development of a sustainability

rating system supported by a set of performance based

standards that addresses the specific regional needs and

environment of Qatar.

Sustainability

Objective

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Outline

• Sustainability

• Sustainable Sites

• Efficient use of Water

• Energy and Atmosphere

• Efficient use of Energy

• Materials and Resources

• Indoor Environmental Quality

• Sustainability Design Authorities

• Assessing Sustainability

• Rating Systems

• LEED (USA)

• QSAS (Qatar)

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Sustainable Sites

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Sustainable Sites

• Protect natural and agricultural areas

• Protect environment

• Reduce air pollution

• Reduce fuel fossil consumption

• Reduce material depletion

• Reduce land contamination

• Reduced site disturbance

• Reduce water depletion & pollution

• Reduce light pollution

• Reduce noise

• Protect human health

• Manage stormwater

Objectives

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Sustainable Sites

Transportation

• Use of Bicycles

• Public transportation

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Sustainable Sites

Heat Island Effect -1

• The term "heat island" describes built up areas that are hotter

than nearby rural areas.

• The annual mean air temperature of a city with 1 million people

or more can be 1–3°C warmer than its surroundings.

• In the evening, the difference can be as high as 12°C.

• Heat islands can affect communities by increasing summertime

peak energy demand, air conditioning costs, air pollution and

greenhouse gas emissions, heat-related illness and mortality

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Sustainable Sites

Heat Island Effect -2

• When examining cities in arid

and semi-arid regions – such

as North Africa and the

American Southwest --

scientists found that they are

only slightly warmer than

surrounding areas in summer

and sometimes cooler than

surrounding areas in winter.

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7

Sustainable Sites

Heat Island Effect - 3

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Sustainable Sites

What Can Be Done for Heat Island Problems?

(Rural, Arid, or Semi-Arid Surroundings)

• Increasing tree and

vegetative cover

• Creating green roofs (also

called "rooftop gardens" or

"eco-roofs")

• Installing cool—mainly

reflective—roofs

• Using cool pavements (high

reflective pavement

products)

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Sustainable Sites

High Reflectivity Roofs & Pavements

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Outline

• Sustainability

• Sustainable Sites

• Efficient use of Water

• Energy and Atmosphere

• Efficient use of Energy

• Materials and Resources

• Indoor Environmental Quality

• Sustainability Design Authorities

• Assessing Sustainability

• Rating Systems

• LEED (USA)

• QSAS (Qatar)

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Efficient Use of Water

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• Building Water demand: Identifying how

and where reductions in the use of

potable water may be made.

• Using alternative water sources, efficient

distribution and fixtures

• Credit Requirements of Water Saving

1. Minimum Interior Water Use

2. Water Monitoring

3. Improved Interior Water Use

4. Exterior Water Use Reduction:

Landscaping & Water Features

Efficient Use of Water

Overview

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Efficient Use of Water

Water Efficiency

• Reduce quantity of water needed for the building

• Reduce municipal water supply and treatment burden

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Efficient Use of Water

• Potable water: only for drinking, cooking, bathing, wadoaa, and/or people personal usage

• Using water-efficient fixtures and appliances

• Faucet bubblers, low flow showerheads, and flow restrictors to further reduce water consumption

• Recycled gray water: flushing tanks, and/orsimilar activities such as fire fighting watermake up.

• Storm water and water treated by on-site STPor conveyed by the public agency: non-potableuses

• Reducing irrigation water demand: modernirrigation technologies as driblet system.

Design Aspects

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11

• Minimize peak stormwater discharge

• Protect the stormwater drainage system and receiving

water bodies from pollutant loading during and after

storm events.

• Credit Requirements

1. Demonstrate that the post-development peak

runoff rate and quantity does not exceed the pre-

development peak runoff rate

2. Evidence that the building was constructed with the

post-development peak runoff rate and quantity

does not exceed the pre-development peak runoff

rate

Efficient Use of Water

Stormwater Management

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Efficient Use of Water

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Outline

• Sustainability

• Sustainable Sites

• Efficient use of Water

• Energy and Atmosphere

• Efficient use of Energy

• Materials and Resources

• Indoor Environmental Quality

• Sustainability Design Authorities

• Assessing Sustainability

• Rating Systems

• LEED (USA)

• QSAS (Qatar)

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Energy & Atmosphere

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Energy & Atmosphere

Global Warming

• Solar Radiation: Short

wave

• Reflection from surface of

earth

• Greenhouse effect

• CO2 and other air

pollutant gases

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Energy & Atmosphere

Burning of Fusel Fuel

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Energy & Atmosphere

Effects of Global Warming

Rising Sea Level Increased Temperature

Habitat Damage and Species Affected Changes in Water Supply

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Energy & Atmosphere

Ozone Depletion

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Energy & Atmosphere

Goals

• Support ozone protection protocols

• Encourage renewable and alternative energy sources

• Establish energy and efficiency performance

• Optimize energy efficiency

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Energy & Atmosphere

Renewable Energy – Wind, Photovoltaic, and W. Heaters

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Energy & Atmosphere

Renewable Energy – Solar Power

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Outline

• Sustainability

• Sustainable Sites

• Efficient use of Water

• Energy and Atmosphere

• Efficient use of Energy

• Materials and Resources

• Indoor Environmental Quality

• Sustainability Design Authorities

• Assessing Sustainability

• Rating Systems

• LEED (USA)

• QSAS (Qatar)

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Efficient Use of Energy

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Global Energy Consumption

Efficient Use of Energy

4.52

2.72.96

0.286

1.21

0.286

0.828

0

1

2

3

4

5

TW

Oil Coal Biomass Nuclear

Total: 12.8 TW TW = TeraWatt (1012 watts) 34

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Energy Consumption

Efficient Use of Energy

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Energy Efficiency

Efficient Use of Energy

2010 2015 2020 2025 2030

36000

Year

En

erg

y (

kB

tu/y

r)

ASHRAE BOD Goal

Standard 90.1Standard 90.1

Standard 189 Standard 189

AEDGAEDG

Energy Reduction Proposal

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Energy Efficiency Terms

Efficient Use of Energy

• Energy Use Intensity (EUI):

BTU/Sq. Ft./Year

• CBECS: Commercial Building

Energy Consumption Survey

• ASHRAE 90.1 is a standard

that provides minimum

requirements for energy

efficient designs for

buildings except for low-rise

buildings.

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Energy Efficiency

Efficient Use of Energy

All are “site” values in BTU / Square Foot / Year

• 91,000: 2003 CBECS data

• 51,000: ASHRAE 90.1-2004

• 47,000: ASHRAE 90.1-2007

• 36,000: Target for 90.1-2010

• 25,000: Energy Efficient Building

• 0: Net Zero Energy Building -Requires renewable energy (PV, Wind)

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20

0

0% 100%

Source Energy Savings (%)

Tota

l Annual C

osts

($/y

ear)

Lease Costs (or Finance Costs)

utility bills

cash flow

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2

The Path to a Net Zero Building

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• Energy calculation and assessment

process

• Reducing demand for energy: passive

environmental design, appropriate

selection of highly efficient mechanical

and electrical equipment, and the

facilitation of renewable energy

• Credit Requirements of Resourceful

Energy

1. Minimum Energy Performance

2. Energy Monitoring

3. Ozone Impacts of Refrigerants

4. Cool Building Strategies

5. Renewable Energy

Efficient Use of Energy

Overview

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Lighting

Efficient Use of Energy - Lighting

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Lighting

Efficient Use of Energy - Lighting

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Lighting – External Lighting

Efficient Use of Energy - Lighting

Photovoltaic

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Lighting – Fluorescent

Efficient Use of Energy - Lighting

• Models: “T-12”, “T-8”, or “T-5”.

• The names come from the size

of their diameter per eighth

inch. For example, a T-12 lamp

is 12/8 inch in diameter

• T-8 lights are the most cost

effective

• T-5 lamps are the most energy

efficient

• Installation of energy efficient

fluorescent lamps (T-5) in place

of conventional fluorescent

lamps(T-12). 44

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Lighting -CFL

Efficient Use of Energy - Lighting

• CFL is a Compact Florescent Lamp

that ensures 80% of energy saving

compare to equivalent light

output of conventional

incandescent lamp.

• CFL is a kind of Energy Efficient

Lamp which gives us required

lumen by consuming fewer watts.

• CFLs contain a very small amount

of mercury sealed within the glass

tubing and thus require care in

handling and disposal.

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Lighting -CFL

Efficient Use of Energy - Lighting

• Low electrical consumption as compared to conventional

lighting products

• About 80% energy saving over incandescent bulbs.

• Long life up to 10,000 hours

• It can operate within 130-280 V range

• Low cost of maintenance

• High luminous efficiency

• Available in different colors to create desired ambience

• Lamps designed for power factor higher than 0.85

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Lighting – Led Lamps

Efficient Use of Energy - Lighting

• A LED (Light Emitting Diode) lamp is a

solid-state lamp that uses light-

emitting diodes as the source of light.

• The operational life of current white

LED lamps is 100,000 hours. This is 11

years of continuous operation, or 22

years of 50% operation.

• Reduces energy costs — uses at least

75% less energy than incandescent

lighting, saving on operating expenses.

• Reduces maintenance costs

• Reduces cooling costs — LEDs produce

very little heat. 47

Efficient Use of Natural Lighting

Efficient Use of Energy - Lighting

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Occupancy Sensors

Efficient Use of Energy - Lighting

Benefits Application

Energy Saving Private Offices

More attractive Restroom

Compliance with Energy

Code

Conference Room

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HVAC – Building Envelope

Efficient Use of Energy - HVAC

• Thermal insulation of envelop

• Air tight construction

• Install high-performance doors and

windows

• Highly insulating and active glazing

• Light color envelop

• Building orientation

• Minimize infiltration and x-filtration

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HVAC – Cooling Load

Efficient Use of Energy - HVAC

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HVAC – Cooling Load

Efficient Use of Energy - HVAC

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HVAC - Design

Efficient Use of Energy - HVAC

• Energy calculations

• Indoor design

conditions

• Outdoor design

conditions

• Internal loads

• Factor of safety

• Diversity factors

• Use of environmental

friendly refrigerants: Global

warming & Ozone

depletion53

HVAC - Design

Efficient Use of Energy - HVAC

• Lower duct friction rate (0.08”

WC/100 ft)

• Reduce interior ductwork

leakage

• Increase duct insulation

• Ductwork sealing: Class B

• Use day lighting and occupancy controls

• Use higher motor and transformer efficiencies

• Use O/A motorized dampers

• Use energy metering

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HVAC – Use of Efficient Systems

Efficient Use of Energy - HVAC

• Variable Air Volume

• Primary/Secondary

Chilled Water System

• Demand-controlled

ventilation (CO2 sensors)

• Heat Pumps

• Utilizing heat rejection

from condensers

• Efficient air distribution

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HVAC – Use of Efficient Systems

Efficient Use of Energy - HVAC

Economizer Cycle Heat Recovery Systems

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HVAC – Absorption Chillers

Efficient Use of Energy - HVAC

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HVAC – Construction & Operation

Efficient Use of Energy - HVAC

• TAB

• HVAC control system

• Thermostat setting

• Keep filters clean

• Keep heat transfer surfaces clean

• Replace, renovate aging loads (motors, control, etc .)

• Ensure intelligent load control (variable speed drives, regulation systems, ...)

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BMS

Efficient Use of Energy - BMS

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BMS

Efficient Use of Energy - BMS

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BMS

Efficient Use of Energy - BMS

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Variable Speed Drives

Efficient Use of Energy

• A small reduction in

speed can make a big

difference in the energy

consumption

• Many fans and pumps

systems run at less than

full capacity a lot of the

time, a variable speed

drive huge savings

produce

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Outline

• Sustainability

• Sustainable Sites

• Efficient use of Water

• Energy and Atmosphere

• Efficient use of Energy

• Materials and Resources

• Indoor Environmental Quality

• Sustainability Design Authorities

• Assessing Sustainability

• Rating Systems

• LEED (USA)

• QSAS (Qatar)

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Material & Resources

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Materials and Resources

• Reduce amount of materials needed

• Use materials with less environmental impact

• Reduce and manage waste (Recycle and Reuse Materials)

Overview

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Materials and Resources

• Energy efficiency in the

building

• Human and environmental

health

• Durability, maintenance and

performance

• Resource limitation

• Waste management

Selection Bases

• Upstream = raw material

extraction & transportation

• Upstream = manufacturing &

transportation

• Direct = Construction

• Downstream = Building

occupancy use and

maintenance

• Post-usage= Demolition

• Post-usage = recycling,

reusing or disposing of a

material

Material Lifecycle

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Outline

• Sustainability

• Sustainable Sites

• Efficient use of Water

• Energy and Atmosphere

• Efficient use of Energy

• Materials and Resources

• Indoor Environmental Quality

• Sustainability Design Authorities

• Assessing Sustainability

• Rating Systems

• LEED (USA)

• QSAS (Qatar)

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Indoor Environmental Quality

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Indoor Environmental Quality

• Ensure thermal comfort and system controllability

• Establish good environmental quality

• Eliminate, reduce, manage the sources of indoor pollutants

• Provide for occupant connection to the outdoor environment

Overview

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Indoor Environmental Quality

• It is condition of mind which

expresses satisfaction with

the thermal environment and

is assessed by subjective

evaluation.

• Six Factors for comfort

• Metabolic rate

• Clothing insulation

• Air temperature

• Radiant temperature

• Air speed

• Humidity

Thermal Comfort

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Indoor Environmental Quality

Variables Affecting Comfort

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Indoor Environmental Quality

• Productivity is

inversely

proportional with

comfort

• Motivation is more

important than

comfort

• Design conditions

Thermal Comfort

For 80% occupant acceptability

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Indoor Environmental Quality

• Building occupants

experience acute health and

comfort effects that appear

to be linked to time spent in

a building

• Non-specific symptoms such

as eye, nose & throat

irritation, mental fatigue,

headaches, nausea and skin

irritation (WHO, 1983)

Sick Building Syndrome (SBS)

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Indoor Environmental Quality

• Inadequate Ventilation (52%)

• Inside Air Contaminants

(17%)

• Outside Air Contaminants

(11%)

• Biological Agents (10%)

• Building Materials (3%)

• Unknown (12%)

Causes of SBS

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Indoor Environmental Quality

Where to find contaminants?

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Indoor Environmental Quality

Solutions to SBS

• Pollutant source removal or

modification

• Air cleaning; typical furnace filter,

etc.

• Increasing ventilation rates

• Increase awareness

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Indoor Environmental Quality

Rates of Outdoor Air

0

10

20

30

40

50

60

70

1835

1842

1849

1856

1863

1870

1877

1884

1891

1898

1905

1912

1919

1926

1933

1940

1947

1954

1961

1968

1975

1982

1989

1996

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Outline

• Sustainability

• Sustainable Sites

• Efficient use of Water

• Energy and Atmosphere

• Efficient use of Energy

• Materials and Resources

• Indoor Environmental Quality

• Sustainability Design Authorities

• Assessing Sustainability

• Rating Systems

• LEED (USA)

• QSAS (Qatar)

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Sustainability Design Authorities

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Sustainability Design Authorities

Do we need specific guidance on sustainability?

• Definitions are not always that

helpful in practice

• Need to define what you want to achieve in your context

• Education, training and awareness raising

• Means of assessing design options and applications

• Level playing field for developers

• Showing the future direction of policy

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Sustainability Design Authorities

Finding the Way

• What is the range of issues to

consider?

• How are they linked together?

• What standards and advice are out

there?

• What might decision makers expect?

• What does good practice look like –

marketing opportunities?

• How can I do more – simple “wins”?

• What might I have to consider in the

future?

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Outline

• Sustainability

• Sustainable Sites

• Efficient use of Water

• Energy and Atmosphere

• Efficient use of Energy

• Materials and Resources

• Indoor Environmental Quality

• Sustainability Design Authorities

• Assessing Sustainability

• Rating Systems

• LEED (USA)

• QSAS (Qatar)

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Assessing Sustainability

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Assessing Sustainability

Method 1: End-User Impact

• Calculation of negative

externalities created by the

direct actions of the end users

• Externalities (carbon

footprint, hazardous gas

emissions, waste production,

etc.) are calculated by looking

at the consumption processes

of goods and services.

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43

Assessing Sustainability

Method 2: Lifecycle

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Assessing Sustainability

Method 2: Lifecycle

• 75 % of the life cycle costs of

a building are in the

operation and alterations of

the facility over 25 years.

• Renovations in existing

buildings can yield energy

savings of up to 30%.

• Long term sustainable

maintenance offering

preventive maintenance can

keep those savings in place

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Assessing Sustainability

Method 3: Lifestyle

• Focus on lifestyles of the

users instead of their impacts

• Lifestyle is a significant factor

that affects use of energy in

buildings

• Examples: bigger screen TVs,

more home appliances to

ease the life, air conditioning

systems, etc.

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Outline

• Sustainability

• Sustainable Sites

• Efficient use of Water

• Energy and Atmosphere

• Efficient use of Energy

• Materials and Resources

• Indoor Environmental Quality

• Sustainability Design Authorities

• Assessing Sustainability

• Rating Systems

• LEED (USA)

• QSAS (Qatar)

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Rating System

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Rating Systems

[UK] BREEAM, Building Research Establishment's

Environmental Assessment Method, United Kingdom -

Released 1990

[US] LEED, Leadership in Energy and Environmental Design,

United States - Released 2002

[Canada] Green Globes, Canada • Released 2002

[Japan] CASBEE, Comprehensive Assessment System for

Building Environmental Efficiency, Japan - Released 2002

[International] SBTool, Sustainable Building Tool

Canada - Released 2002 90

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Rating Systems

[Hong Kong] CEPAS, Comprehensive Environmental Performance

Assessment Scheme, Hong Kong - Released 2007

[UK] BREEAM Gulf

Building Research Establishment's, Environmental Assessment

Method, United Kingdom, Released 2008

[Abu Dhabi] ESTIDAMA

Estidama New Buildings Design Guidelines (ENBDG)

Abu Dhabi, UAE, Released 2008

[Qatar] QSAS

Qatar Sustainability Assessment System, Qatar, Launched 2009

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Outline

• Sustainability

• Sustainable Sites

• Efficient use of Water

• Energy and Atmosphere

• Efficient use of Energy

• Materials and Resources

• Indoor Environmental Quality

• Sustainability Design Authorities

• Assessing Sustainability

• Rating Systems

• LEED (USA)

• QSAS (Qatar)

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LEED (USA)

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LEED (USA)

Definition

• Leadership in Energy and

Environmental Design is an

international green

building rating system

which is widely used in the

US and other countries.

• It consists of a suite of

rating systems for the

design, construction and

operation of high

performance green

buildings, homes and

neighborhoods.

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LEED (USA)

History

• LEED was established in 1998.

• LEED NCv1.0 was a pilot version issued in 1998.

• These projects helped inform the USGBC of the requirements

for such a rating system, and this knowledge was incorporated

into LEED NCv2.0.

• LEED NCv2.2 was released in 2005, and v3 in 2009.

• Today, LEED consists of a suite of nine rating systems for:

• Green Building Design & Construction 2

• Green Interior Design & Construction 2

• Green Building Operations & Maintenance 2

• Green Neighborhood Development 1

• Green Home Design and Construction 2

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LEED (USA)

LEED 2009 Scoring

• There are 100 possible base points distributed across five

major credit categories:

• Sustainable Sites

• Water Efficiency

• Energy and Atmosphere

• Materials and Resources

• Indoor Environmental Quality

• Plus an additional 6 points for Innovation in Design and an

additional 4 points for Regional Priority.

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LEED (USA)

LEED 2009 Scoring Levels

• Certified: 40–49 points

• Silver: 50–59 points

• Gold: 60–79 points

• Platinum: 80 points and

above

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LEED (USA)

Sustainability in LEED

0

5

10

15

20

25

30

35

40

Distribution of LEED points (%) Energy gets the most attention

from designers. Why?

• In LEED 2009, achieving 40

points is enough to attain a

LEED certification.

• There are 35 available points

under energy credits

• Energy credits can also lead to

achievements in other credits

• Creating buildings that have

less operating costs, �higher

market values

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50

LEED (USA)

LEED and Energy Use

• In 2006, US Green Building Council (USGBC) conducted a

research in corporation with the New Building Institute

(NBI) on 121 buildings to determine the energy use in LEED

certified buildings.

• Result: LEED certified buildings consume 25-30% less

energy per floor area than the national average provided

by Commercial Building Energy Consumption Survey

(CBECS)

99

LEED (USA)

Assessment in LEED

• water use

• use of material and resources,

• construction pollution

prevention

• heat island effect

• low emitting materials

• storm water control

Performance of building

Performance of occupant

(End-User Impact)

Calculations are through per

unit area and per unit volume

Technological fixes as

solutions

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LEED (USA)

Assessment in LEED

• 10,000 square feet (929m2).

• Use about 191,000 kilowatt

hours per year.

• After installation of solar

panels, rain water collection

systems, solar roof fans and

geothermal heating systems.

energy consumption of the

house decreased only by

11%.

• A LEED Gold certification

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LEED (USA)

LEED - EB

• For existing buildings LEED has

developed LEED-EB which is for

Operation & Maintenance.

• Research results: tremendous Return on

investment (ROI).

• Saving: an average cost saving of $6.68

per square foot of floor space.

• Overall cost of LEED-EB implementation

and certification: an average of $2.43

per square foot of floor space.

• Overall cost of LEED-EB implementation

and certification: significantly reduced if

automation and technology are

integrated into the implementation. 102

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LEED (USA)

Disadvantages - 1

• LEED is a design tool and not a

performance measurement tool.

• LEED is not climate-specific

(designers may make materials

or design choices that garner a

LEED point, even though they

may not be the most site or

climate-appropriate choice

available).

• LEED is a measurement tool for

green building in the United

States and it is developed and

continuously modified for areas

in the U.S.103

LEED (USA)

Disadvantages - 2

• LEED rating system is not

sensitive and does not vary

enough with regard to local

environmental conditions (a

building in city “X” would

receive the same credit as a

building in city “Y” for water

conservation, though the

principle is more important in

the latter case).

• LEED certification costs require

money that could be used to

make the building in question

even more sustainable.

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Outline

• Sustainability

• Sustainable Sites

• Efficient use of Water

• Energy and Atmosphere

• Efficient use of Energy

• Materials and Resources

• Indoor Environmental Quality

• Sustainability Design Authorities

• Assessing Sustainability

• Rating Systems

• LEED (USA)

• QSAS (Qatar)

105

QSAS (Qatar)

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Definition of QSAS

QSAS (Qatar)

• Qatar Sustainability

Assessment System (QSAS) is a

green building certification

system developed for Qatar.

• The primary objective of QSAS

is to create a sustainable built

environment that minimizes

ecological impact while

addressing the specific

regional needs and

environment of Qatar

107

QSAS (Qatar)

• QSAS consists of a series of sustainable categories and

criteria, each with a direct impact on environmental

stress mitigation.

• Each category measures a different aspect of the project’s

environmental impact.

• The categories define these broad impacts and address

ways in which a project can mitigate the negative

environmental effects.

• These categories are then broken down into specific

criteria that measure and define individual issues.

Rating System -1

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QSAS (Qatar)

[UC] Urban Connectivity

Consists of factors associated with the urban environment such as zoning,

transportation networks and loadings. Loadings on the urban environment

include traffic congestion and air, noise, and light pollution.

[S] Site

Consists of factors associated with land use such as land conservation or

remediation and site selection, planning and development.

[E] Energy

Consists of factors associated with the energy demand of buildings, the

efficiency of energy delivery, and the use of fossil energy sources that

result in harmful emissions and pollution.

[W] Water

Consists of factors associated with water consumption and its associated

burden on municipal supply and treatment systems.

Categories - 1

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QSAS (Qatar)

• These issues range from a thorough review of water

consumption to an assessment of light quality.

• Each criterion specifies a process for measuring

individual aspects of environmental impact and for

documenting the degree to which the requirements have

been met.

• A score is then awarded to each criterion based on the

degree of compliance.

Rating System - 2

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QSAS (Qatar)

Categories - 2

[M] Materials

Consists of factors associated with material extraction, processing,

manufacturing, distribution, use/re-use, and disposal.

[IE] Indoor Environment

Consists of factors associated with indoor environmental quality such as

thermal comfort and air, acoustic, and light quality.

[CE] Cultural & Economic Value

Consists of factors associated with cultural conservation and support of

the local economy.

[MO] Management & Operations

Consists of factors associated with building design management and

operations, such as sub-metering of energy usage, leak detection, and

commissioning.

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Rating System Resources

QSAS (Qatar)

• RFP Preparation

• Assessment Manuals

• Design Guidelines

• Training Manual

• Energy Manuals

• Toolkits

• Calculators

• Project Management

System (PMS

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57

QSAS (Qatar)

Scope Of QSAS Rating System

(I) Design (II) Construction (III) Operation

Applications Of QSAS Rating System

� QSAS Commercial Buildings

� QSAS Residential Buildings

� QSAS Schools

� QSAS Core & Shell

� QSAS Neighborhood

� QSAS Mosques

� QSAS Hotels

� QSAS Light Industries

� QSAS Sports (New 2011)

QSAS Schemes

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No

Category

CriteriaWeight

UC Urban Connectivity 8.00%

UC.1 Load on Local Traffic Conditions 1.80%

UC.2 Pedestrian Pathways 1.08%

UC.3 Proximity to Amenities 0.69%

UC.4 Light Pollution 0.58%

UC.5 Noise Pollution 0.43%

UC.6 Public Transportation 1.30%

UC.7 Private Transportation 0.39%

UC.8 Sewer & Waterway Contamination 1.08%

UC.9 Shading of Adjacent Properties 0.65%

S Site 9.00%

S.1 Ecological Value of Land 2.34%

S.2 Vegetation & Shading 1.05%

S.3 Desertification 1.75%

S.4 Rainwater Runoff 1.17%

S.5 Mixed Use 0.88%

S.6 Heat Island Effect 0.58%

S.7 Adverse Wind Conditions 0.88%

S.8 Acoustic Conditions 0.35%

E Energy 24.00%

E.1 Energy Demand Performance 5.20%

E.2 Energy Delivery Performance 5.20%

E.3 Fossil Fuel Conservation 3.64%

E.4 CO2 Emissions 4.55%

E.5 NOx, SOx, & Particulate Matter 5.41%

W Water 16.00%

W.1 Water Consumption 16.00%

M Materials 8.00%

M.1 Regional Materials 1.85%

M.2 Responsible Sourcing of Materials 0.00%

M.3 Structure Reuse: On-site 0.91%

M.4 Materials Reuse: Off-site 1.54%

M.5 Recycled Materials 1.85%

M.6 Design for Disassembly 1.85%

M.7 Life Cycle Assessment (LCA) 0.00%

IE Indoor Environment 14.00%

IE.1 Thermal Comfort 1.20%

IE.2 Low-Emitting Materials 1.60%

IE.3 Natural Ventilation 1.60%

IE.4 Mechanical Ventilation 1.60%

IE.5 Indoor Chemical & Pollutant Source

Control

1.60%

IE.6 Views 1.20%

IE.7 Glare Control 1.20%

IE.8 Illumination Levels 1.20%

IE.9 Acoustic Quality 1.20%

IE.10 Daylight 1.60%

CE Cultural & Economic Value 13.00%

CE.1 Heritage & Cultural Identity 8.67%

CE.2 Support of National Economy 4.33%

MO Management & Operations 8.00%

MO.1 Commissioning Plan 2.67%

MO.2 Energy Use Sub-metering 0.89%

MO.3 Leak Detection 1.78%

MO.4 Organic Waste Management 0.00%

MO.5 Recycling Management 0.00%

MO.6 Intelligent Building Control System 2.67%

Total 100.00%

Assessment System Weighting: Commercial

QSAS (Qatar)

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Scoring

QSAS (Qatar)

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QATAR SUSTAINABILITY ASSESSMENT SYSTEM (QSAS)

COMMERCIAL - DESIGN STAGE

Project Information

Project Name: (to be completed)

Project Location: (to be completed)

Gross Area (m2): (to be completed)

No CategoryPoint

0.110UC Urban Connectivity 0.110

S Site 0.000

E Energy 0.000

W Water 0.000

M Materials 0.000

IE Indoor Environment 0.000

CE Cultural & Economic Value 0.000

MO Management & Operations 0.000

Level Achieved 1 Star

• Displays points earned for each category,

combined total points, and rating level

achieved by the project.

• Bar chart illustrates points achieved and

the maximum attainable points for each

category

• Line chart displays QSAS rating level

achieved by the project

Points Achieved vs. Points Attainable

0.00

0.00

0.00

0.00

0.00

0.00

0.00

0.11

0.24

0.39

0.42

0.24

0.48

0.72

0.27

0.24

-0.3 -0.2 -0.1 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Management & Operations

Cultural & Economic Value

Indoor Environment

Materials

Water

Energy

Site

Urban Connectivity

Points Attainable Achieved

0.110

Score Certification Level QSAS Certification

X < 0 - Certification denied

0.0 ≤ X ≤ 0.5

Certification achieved

0.5 < X ≤ 1.0

1.0 < X ≤ 1.5

1.5 < X ≤ 2.0

2.0 < X ≤ 2.5

2.5 < X ≤ 3.0

QSAS Toolkit

Summary Tab

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Thank You

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