CASE STUDY

FOR

HEROES OF THE UAE

archcorp architectural engineering tel:04 2955877, fax: 04 2955811. p.o.box. 95285, www.archcorp.biz office 201-dubai national insurance building, port saeed area, dubai.uae

Contents

1. Introduction

1.1. Archcorp’s Introduction 1.2. Mission 1.3. Archcorp Sustainable Initiatives 1.4. Motivation 1.5. Site Selection Criteria

1.5.1. Better Location 1.5.2. Proximity of Metro and Public Transport 1.5.3. Better Environment 1.5.4. Applying Lessons Learnt in Sustainable Design

2. Relevant Data

2.1. General Information 2.2. Office Equipments 2.3. Number & type of lights 2.4. Number & type of AC equipments 2.5. Sanitary Fixtures

3. Energy and Water Conservations Measures

3.1. AC system & Conservation measures 3.1.1. Building & Office Air Conditioning System 3.1.2. Office FCU’s & Air Side System 3.1.3. Fresh Air Handling System 3.1.4. Chilled Water Distribution System 3.1.5. Saving Measures

3.2. Lighting System & Conservation Measures 3.3. Office Equipments & Conservations Measures 3.4. Water System & Conservation Measures

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4. Lessons Learnt 5. Appendixes

5.1. Appendix 01 - Indicators 5.1.1. Information required for indicators 5.1.2. Indicators

5.2. Appendix 02 - Light Energy 5.2.1. Light Energy Savings 5.2.2. Light Energy Savings & Consumption Graphs

5.3. Appendix 03 - Equipment Energy Star Rating 5.4. Appendix 04 - Water Fixture Schedule 5.5. Appendix 05 - Water Savings

5.5.1. Water Savings – Baseline 5.5.2. Water Savings – Design Case

5.6. Appendix 06 - Other Sustainability Measures 5.6.1. Material Reused - 67% cost saving 5.6.2. Waste Reused 5.6.3. Furniture Reused - 97% cost saving 5.6.4. Public Transport System

5.7. Appendix 07 - Supporting cut sheets 5.7.1. Hand Shower 5.7.2. Kitchen Mixer 5.7.3. Wash Basin Mixer 5.7.4. Water Closet

6. Archcorp’s Green Projects

6.1. Easy Hotel, JAFZA Dubai 6.2. Pakistan Petroleum Limited ,Head Office , Karachi Pakistan 6.3. Solar House, Lagos City, Nigeria 6.4. Wadi Sfini , Sharjah UAE

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1. Introduction

1.1. Archcorp Introduction Archcorp is a multidisciplinary consultancy firm based in UAE, was established in 2005 and having Offices in Dubai, Sharjah and Abu Dhabi. We provide services in Architecture, Interior Design, Master Planning and Engineering to our esteemed clients. As a professional organization, we believe architects and engineers have huge responsibility towards built environment and in leading the initiative at individual and collective level to conserve Energy, Water and Reducing Carbon footprint. We provide creative solutions to our clients for new as well as retrofit buildings. Our mission is to provide design solutions with a conscious approach towards Environment as well as economically viable solutions to the projects.

1.2. Mission

We are committed to continuous improvement of our professional service and delivery standards. We believe we can achieve that by:

• Development and empowerment of our human resources • Keeping pace with the innovations in technology • Defining quality standards • Monitoring Compliance

Formal and informal training sessions are encouraged and gradually online information centre and library is being built along with a materials research centre that helps architects to select appropriate products and materials, ensuring that we have the knowledge base to create inspirational as well as sustainable buildings.

1.3. Archcorp Sustainable Initiatives:

In July 2009, Archcorp management decided to relocate its office from Garhoud to Port Saeed area in Dubai. One of the driving factors behind this decision was the desire to “GO GREEN” and become “CARBON NEUTRAL” company. In order to achieve this target there were a number of initiatives taken from concept to post occupancy stage to achieve energy savings, reduced water consumption, Reused materials, furniture reuse, waste recycling etc. As a result of these initiatives Archcorp head office-Port Saeed Dubai, is a Carbon Neutral Company and has achieved USGBC LEED CI Silver Certification.

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Archcorp has taken the following initiatives to become part of the green movement

• Aiming to have our own office as LEED certified project • Participation in Sustainable and Energy summits • Participation as Speakers in Green Symposiums • In house Environmental awareness sessions for staff motivation • Waste Sorting and Recycling program within office premises • In house LEED training/ preparation sessions – 4 A.P’s and 2 Green Associates have

successfully passed the exam • Developing a Green Products Library – Online Library system and network of green products

suppliers • Alliance with different professionals and technology specialists – to stay up to date in proposing

innovative technologies and solutions to our clients • Reusing furniture from old office as well as existing ones within new premises in creative ways in

order to eliminate wastage • Investing in ergonomic chairs with recycled content

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1.4. Motivation

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1.5. Site Selection Criteria

The new office location was selected carefully and due consideration was given to the following factors while designing the interior spaces

1.5.1. Better Location Better place and location in the built neighborhood which is easily accessible and has strong community connectivity with all basic amenities in the surroundings.

1.5.2. Proximity of Metro and Public Transport

One of the prime advantages of the office relocation was the potential for staff, clients and visitors to use public transportation system thereby contribute towards reducing environmental effects through limiting personal vehicle usage.

1.5.3. Better Indoor Environment

Indoor environment and air quality improves the wellbeing and performance of human beings. The office has more than 90% habitable spaces which have direct day lighting and views to outside. The well designed internal layout provides comfort as well as substantial savings through reduced energy use. All printing photocopying areas are enclosed with an automatic door closer and exhaust is installed to minimize chemical and biological contaminants to the indoor environment.

1.5.4. Applying Lessons Learned in Sustainable Design

We used our office as a place where we could experiment and implement sustainable initiatives; and present as an example for others to follow. A clear strategy was developed in consultation with full team’s input including Architects, Engineers, Contractors, Suppliers, Specialists and others. Main objectives were to reuse maximum material, reduce waste, use environmental friendly products, reduce energy loads and maximize indoor air quality and thermal comfort. A number of challenges were faced during this process and few of them are as follows; • Limitations to do MEP changes to the existing building system. • Limitation in availability of green products.

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Archcorp’s office Location

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2. Relevant Data

2.1. General Information Archcorp office is leased on an annual basis.

• Workplace data o Office area (square meter) 378 o Number of Employees at baseline year 47 o Number of employees at implementation year 46 o Occupancy 47

Electricity consumed within the office for work stations, printers, plotters, FCUs, lighting is metered from service provider(DEWA) .

• Archcorp office is not metered for domestic water from service provider (DEWA). Water supply is paid as annual flat rate, which is part of tenancy contract with owner

• Central chillers are used for air conditioning of building.

2.2. Office Equipments Office equipments include followings

• Desktop Computers 46 • A1 Plotter 1 • A3 Color Printer 2 • A3 Photo copy machines 2 • A4 Printer 4 • Scanner 2 • Fax 2 • Server 6 • Rendering machines 2 • LCD TV 42” 2

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2.3. Number and Type of Lights

Type of lighting Number of units per type

Fixture type-A 4x18w (CFL tubes) 28

Fixture type-AA 2x18w (CFL tubes) 5

Fixture type-B 14w (LED) 30

Fixture type-C 7w (LED) 10

Fixture type-D 5w (LED) 8

Fixture type-D 2w (LED) 4

2.4. Number and Type of A/C Equipments

Type of Equipments

Description

Chiller Make: Trane Chiller Type: Packaged Air Cooled Helical Rotary Liquid Chiller Model No: RTAA 328 Quantity: 2Nos. Origin: France Year of Installation: 1998

Fan Coil Units Make: Trane FCU Type: Chilled Water Model No: Model: HCCA Size 10~18 Quantity: 7Nos. Origin: Taiwan Year of Installation: 1998

Pressurization Unit

Make: Holfeld Pumps Model No: 2202

Chilled Water Pumps

Make: Holfeld Pumps Model No: 2202 Quantity: 2Nos. + (1 standby)

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2.5. Sanitary Fixtures Ref. Fixture Quantity

Guest Toilet

Private Lavatory Faucet

1

Water Closet Concealed Flush Mechanism

1

Shower 1 Guest Pantry

Kitchen Sink 1

Staff Pantry

Kitchen Sink 1

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3. Energy Conservation Measures

Archcorp team has evaluated the existing systems that came with the office space that has been leased. We categorized areas of improvement under the following heads: 3.1 Air Conditioning System & Conservation Measures 3.2 Lighting System & Conservation Measures 3.3 Office Equipments System & Conservation Measures 3.4 Water System & Conservation Measures

3.1. Air conditioning System & Conservations Measures

Challenges faced: Upgrading existing A/C system During the fit out period, we focused on the AC and ventilation system because it is the most

energy consuming element that affect our electricity bills. Also it has the most beneficial impact on employee productivity and comfort. However the systems in building and inside offices are owned and maintained by the building owner, therefore any changes or upgrade shall be at our responsibility and our maintenance agreement shall become null and void. Brief description of the A/C systems as follows:

3.1.1. Building and Office Air Conditioning System: The entire building has been provided with chilled water through central chillers plant. The building spaces are air conditioned by means of fan coil units (two pipe system).Entire building is supplied with treated fresh air through dedicated fresh air handler units. The fresh air is supplied to the corridors, inside each office space including Archcorp office and extracted from public toilets.

3.1.2. Office FCU’s and air side system:

The FCUs (fan coil units) of the Office are ducted type and with 3-way valves, the air side system consists of plenum box, duct work, flexible ductwork, diffusers, volume control dampers and associated controls. The False Ceiling in the office is acting as a return air plenum. Spaces have been provided with individual digital control thermostat and with Fan speed control capability.

3.1.3. Fresh Air Handling Unit:

The Fresh air handling unit located on the roof supply tempered fresh air through galvanized Mild steel, low velocity ducts to the common corridors and offices. Mechanical ventilation is provided only to common corridors of the building, and air extracted from the corridors and the public toilets to exhaust fans located at roof.

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3.1.4. Chilled Water Distribution: Chilled water is circulated via two Chilled water pumps at EWT= 4.5°C, LWT =13.5°C.Pumps circulates chilled water to all FCU’s and FAHU in building.

Solutions: Duct layout revised, introduction of fresh air and installation of thermostats were carried out. We carried out simple improvements to ducts layout, distribution and introduction of fresh air to the office space locally to improve the indoor quality. Furthermore, new programmable thermostats have been installed to vary the speed and switch on/off as per occupancy requirements during course of day in order to increase level of controllability and the thermostat mostly set to 24-25 degree centigrade. Different challenges were faced with owner of the building in order not to change in the systems during this process and few of them have been resolved.

Saving measures achieved– 10-17% (Approximately):

. 3.2. Lighting system & conservation measures brief:

Challenges faced: Reduction in lighting load Solutions: Introduction of CFL & LED lights and Day lighting & PIR sensors The overall office lighting load has been reduced. Additional power and Halogen fixtures have been removed, since Halogen fixtures are more energy consuming. We used CFL and LED lights and placed the fixtures at appropriate locations for optimum distribution of light. Day lighting and PIR sensors also have been installed throughout the office to control the lighting fixtures operations only when needed.

Saving measures achieved– 37% (Approximately):

Please refer relevant Appendix 5.2

3.3. Office Equipments System & Conservation Measures Brief:

Challenges faced: Requirement of Energy saving equipments Solutions: procurement of energy saving equipments The office has minimum 82.92% equipments with Energy Star ratings. Refer relevant Appendix 5.3 for the equipments schedule.

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3.4. Water System & Conservation Measures Brief:

Challenges faced: Requirement of Water saving Solutions: Installation of water saving fixtures The facility is normally occupied from 8:00 am to 6:00 pm Sunday-Thursday (5days a week), for a total of 45 hours per week. The annual working days considered as 220 days. The total numbers of occupants in the office space considered as 46 FTE (Full Time Employees). There are two pantries provided with kitchen sink, also there is one guest toilet. The total 42 occupants (FTE) uses publics wash rooms in the common corridor located outside the office space. For 0.5% of the total FTE, shower facility has been provided within the office space. The office space is equipped with low flow fixtures with aerators for all fittings to acquire the required water reduction. Please see attached fixtures/fittings product cut sheets manufacturer's catalogue Appendix 5.7 and Archcorp water fixture schedule-Appendix 5.4 & 5.5.1 & 5.5.2, for your information. The fixtures products are from Hansgrohe and RAK listed here with models.

Washbasin Mixer - Make: Hansgrohe; Type: Talis S2; Model No. 32048000. Kitchen Mixers - Make: RAK-Kludi; Type: Perfect Model No. 11010. Water Closet - Make: RAK; Type: Venice Wall mounted dual flush with flush valve mechanism. Hand Shower - Make: Hansgrohe; Type: Crometta 85 Green: Model No.28561000. Please note that as indicated in Appendix 5.7.1, the required operating flow pressure which is 0.085 MPa, the fixture is only consuming 0.8 GPM.

Reduced Water Consumption –50% from standard fixtures and 89% from old office case (Approximately):

At the old office the water consumption is calculated based on the DEWA bills and as stated in the indicators, while for the new office an indirect calculation made of water reduction in absence of bills as water supply is part of tenancy contract. We have estimated the savings per the fixtures and fittings implemented at an overall approximate of 92% saving in water use, compared to the baseline old office condition. The old sanitary fittings have been replaced with low flow fittings which provides about 50% saving in water use compared to baseline standard fixtures. Please refer relevant Appendix no 5.5.1 & 5.5.2

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4. Lessons Learned

• Achieving our environmental goals is possible where there is the will and commitment towards our responsibility to make the planet a better place to live in for the present and future generations.

• Lack of awareness and the misconception that green goals are high flying ideas and expensive and complicated to achieve are the negatives that one needs to tackle.

• As building designers, we have a more important role to play towards the built environment for future generations and implementing it within our office is a way to show we practice what we preach.

• The best energy and water saving measurements can be studied and planned in the pre design stage on projects.

• It is our responsibility to educate potential clients about the long term benefits of implementing green building strategy

• Water and light saving measures and credits are the easy to implement even in existing buildings. • Limitations in the as built AC system can affect the energy saving measures inside fit out offices. • Non availability of metering equipments for the water, energy will impact actual saving measurements

and monitoring. • Providing water sub-meters might be helpful to achieve monitoring future savings. • Providing energy sub-meters on the chilled water in/out pipes might be helpful to achieve monitoring

and future savings. • Implementation of green regulations as mandatory on new constructions would be helpful policy. • Building owners and developers engagement in educational green programs would help in future

implementations. • Green products database, their availability in this market and economical viability needs to be worked

on and readily available for potential followers of the Green building strategy .

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Appendixes Appendix 5.1.1- Information required for Indicators

Workplace data Area (Square meters) Implementation Year 378 Area (Square meters) Base Year 436 Number of employees at baseline year(2008)/m2 0.107798 Number of employees at implementation year(2011)/m2 0.121693 occupancy 47 Energy /Electricity Annual consumption in baseline year - KWH/per year per person 2834.7 Annual consumption after implementation - KWH/per year per person 1211.67 Annual cost in baseline year - AED 31039.7 Annual cost after implementation year - AED 16319.85 Water Annual consumption in baseline year -IG/year/person 1881.62 Annual consumption after implementation-IG/year/person 179.63 Annual cost in baseline year - AED 3499.7 Annual cost after implementation year - AED 280.95 Electricity and Water conservation measures Total investment in energy and water ci=onservation measures -AED 28000

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Appendixes Appendix 5.1.2- Indicators

REF INDICATOR RESPONSE A Percentage of the reduced electricity consumption over a year 55.00% B Percentage of reduced water consumption over a year 89.00%

C1 Yearly tonnes of CO2 savings for electricity 30.74 tCO2/year C2 Yearly tonnes of CO2 savings for water 8.31 tCO2/year C3 Total tonnes of CO2 savings 39.04 tCO2/year

D1 Percentage of CO2 reduction over a year for energy (Same value as indicator a) 55.00%

D2 Percentage of CO2 reduction over a year for water (Same value as indicator b) 89.00%

D3 Total percentage of CO2 reduced over a year 59.84% E Total investment 28,000.00 AED F1 Cost of savings for electricity over a year 18772.02 AED F2 Cost of savings for water over a year 2935.11 AED F Cost savings over a year 21701.13 AED G Payback time 1.29 years H Avoided CO2 emissions per Dirham 1.39 kg CO2/year/AED

J1 Electricity consumption per person per year after implementation 1211.67 KWh/year/person

J1-1 Electricity consumption per person in baseline 2834.70 KWh/year/person

J2 Percentage of reduced energy consumption per person 57.26% J3 Water consumption per person per year after implementation 179.6 IG/year/person

J3-1 Water consumption per person per year in baseline 1881.62 IG/year/person J4 Percentage of reduced water consumption per person 90.45% K1 Energy consumption per year per square metre 147.45 KWh/year/m2 K2 Water consumption per year per square metre 21.86 IG/year/m2 K3 CO2 emissions per year per square metre 103.29 kg CO2/year/m2

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Lighting Fixtures schedule indicating type of fixture used in each space and showing overall savings compare to ASHRAE 90.1

Compact Fluorescent and Halogen replaced with LED Light fixtures

Appendix 5.2.1 – Light Energy Savings (37%)

The lighting energy saving graph shows the lighting power densities comparison between a baseline case which is based on the ASHRAE 90.1-2004 and actual implemented design. The baseline total wattage to the office area (4063.08 sf) is equal to 4063.08 watt, while the total designs wattage to the same area equal to 2569 watt. The ASHRAE building area method table 9.5.1 for office (1.0w/sf) is used to calculate the baseline while actual design data taken from light specification provided by the supplier used to calculate the design case. As shown the wattage of the implemented lights are lower than the baseline by ASHRAE about 1494.08 watts, and in total the energy saving is about 37%.

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Appendix 5.2.2 – Light Energy Savings & Consumption Graphs

Overall Lighting Energy savings at Archcorp New office

Electrical Consumption on Monthly Basis

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Appendix 5.3 – Equipment Energy Star Rating

IT Peripherals Total No. Energy Star % Description

CPU 46 21 45.65 HP DX2200, DC7800

LCD 48 40 83.33 Viewsonic(VA712), Samsung(SyncMaster 920nw), Acer(AL1714)

Monitor 2 0 0.00 CRT Monitors (No Energy Saver)

MFP 4 4 100.00 HP(5035), Minolta(Dialta Di1611), Xerox(7335 work centre)

Plotter 1 1 100.00 HP 500

Printer 6 6 100.00 HP 1020, HP 7335(All in One), HP 1280 Deskjet, Hp 2600n Laser Printer

Scanner 2 2 100.00 HP Scanjet 3970 , EPSON GT 15000

Fax 2 2 100.00 Panasonic KX-FP342

Server 6 5 83.33 HP DL 380 (G5, G3), HP DL 360 G5, HP Proliant ML 110

Rendering Machine 2 2 100.00 X Box

LCD TV 42" 2 2 100.00 Samsung 40" Series 5

Total 82.94

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Appendix 5.4 – Water Fixture Schedule

Make Fixture Type Model No Location Water Flow (Baseline GPM)

Water Flow (Designed GPM)

Operating Pressure (PSI)

Hansgrohe Private Lavatory Faucet Talis S2 32240000 Guest Toilet 2.2 1.85 43.5

RAK-KLUDI Kitchen Sink RAK-11010 Series Project

Guest Kitchen Pantry 2.5 1.58 43.5

RAK-KLUDI Kitchen Sink RAK-11010 Series Project Main Kitchen Pantry 2.5 1.58 43.5

Hansgrohe Shower Crometta 85 Green 28561000 within Guest Toilet 2.5 0.8 14.5

RAK

Water Closet Concelead flush mechanism Venice Back Guest Toilet 1.6 GPF 1.6 GPF NA

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Appendix 5.5.1 –Water Saving Baseline Water consumption for the old and new office as follow

Water consumption old office per year

Water Consumption New Office- Base line per year

Water Consumption New Office –Design Case per year

102623 IG 17335.31 IG 8663.23 IG Refer to old office baseline conditions, overall saving of 89% in water use have been done in comparison to new

office water usage. The old sanitary fittings in the new office have been replaced with low flow fittings which provide about 50% saving in water use compared to baseline standard fixtures.

Water Calculations for Baseline

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Appendix 5.5.2 –Water Saving Design Case

Water Calculations for Design Case

Water Consumption of Fixtures

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co

Appendix 5.6 - Other Sustainability Measures 5.6.1 Material Reused – 67% Cost saving.

The used materials from old office and those left by previous tenant in the new office have been reused for walls, floors, hardware, cabinets etc. overall 67% cost saving have been achieved through material reuse.

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Appendix 5.6.2 – Waste Reused Material from the old office and those left over by previous tenant were considered waste, rather sending it to landfills, we reused 71% of waste,17.9% sold to contractor for reuse,805% sold to recycler and 2.4% was sent to landfills

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Appendix 5.6.3 - Furniture reused – 97% cost saving New office space layout was designed to maximize the space utility and reused 97% of the old furniture r from previous office, while less area occupancy level has been maintained

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Appendix 5.6.3 – New office Furniture Layout

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Appendix 5.6.3 – Old office Furniture Layout

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Appendix 5.6.4 – Community Connectivity Better place and location in the built neighborhood which is easily accessible and has strong community connectivity with all basic amenities in the surroundings

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Appendix 5.7 – Supporting Cut Sheets

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Appendix 5.7 –Supporting cut sheets Appendix 5.7.1 – Hand Shower –Page 01

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Appendix 5.7.1 – Hand Shower –Page 02

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Appendix 5.7.1 – Hand Shower –Page 03

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Appendix 5.7 –Supporting cut sheets Appendix 5.7.2 – Kitchen Mixer –Page 01

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Appendix 5.7.2 – Kitchen Mixer –Page 02

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Appendix 5.7.2 – Kitchen Mixer –Page 03

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Appendix 5.7 –Supporting cut sheets Appendix 5.7.3 – Wash Basin Mixer

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Appendix 5.7 –Supporting cut sheets Appendix 5.7.4 – Water Closet –Page 01

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Appendix 5.7.4 – Water Closet –Page 02

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6. Archcorp’s Green Projects

6.1. Easy Hotel

6.2. Pakistan Petroleum Limited

• Located in JAFZA –Dubai. • Archcorp role is a main consultant • Achieved LEED’s Gold certification • Min 21% Energy saving achieved. • Energy efficient lighting as per ASHRAE 90.1 • Intelligent lighting system incorporating motor sensors,

daylight sensors , Occupancy sensors • Onsite renewable energy –Photovoltaic solar panels • High performance COP chillers • 20% water saving through low flow fixtures • Building management system, automation and control

system • Use of light well with sun pipes to provide artificial light to

rooms • Low volatile emitting material, thermal comfort

• Located in Karachi – Pakistan • Archcorp role is sustainable consultant • Targeting LEED’s Gold certification • Min 30% Energy saving achieved through cogeneration

system • Energy efficient lighting as per ASHRAE 90.1 • Intelligent lighting system incorporating motor sensors,

daylight sensors , Occupancy sensors • Grey water recycling for landscape and non portable uses • High performance COP chillers • 30% water saving through low flow fixtures • Building management system, automation and control

system • Low volatile emitting material, thermal comfort

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6.3. Solar House

6.4. Wadi Sfini Rest House, Ras Al Khaimah

• Located in Logos City –Nigeria . • Archcorp role is a main consultant • Passive design measures like orientation, shading,

insulations of building envelope and daylight • Automatic sensor for occupancy • Recovery system using cool exhaust air from building • Renewable energy- Solar, Wind & Geo thermal • Low emitting volatile material • Indoor chemical and pollutant source control • Thermal comfort • Use of Compact florescent & LED lighting fixtures • Photovoltaic panels • Building management system, automation and control

system

• The concept of the rest house is based on harnessing solar energy for cooling and electrical needs at the same time creating an envelope that minimizes the energy requirements of the building.

• The site is located 120 km outside of Sharjah and is situated at the foot of a small rocky hill. The access to the site is from the north via a wadi where water flows after the rains.

• Passive solutions include well insulated walls and optimized building orientation towards sun and wind.

Technologically, the focus is towards selection of low energy appliances and fixtures. Cooling in the summer months is via low temperature ground water circulation through floor slabs.

• Energy is harnessed from solar PVS and stored in batteries at basement.

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