DUBLIN SCHOOL OF ARCHITECTURE, DUBLIN INSTITUTE OF TECHNOLOGY DT774 - Postgraduate Certificate in Digital Analysis and Energy Retrofit

FLAT TOP BLOCK LOW-ENERGY RETROFITDESIGN PROPOSAL

Daniel Coyle BArch MRIAI (D12124957)

Design response to existing Architectural & Urban Form. Poorly defined Private & Communal Spaces & Public Realm. Open courtyard & Access Stairs (Public Access). Security & Privacy. Interface at Street Level. BIM Model (Revit & ArchiCAD). Massing, Structural System, Solar Access (Passive Solar Design).

Existing Blocks

Solar Access

Energy Analysis

Fabric LossesVentilation Losses

Space Heating Water HeatingLighting Pumps, fans etc.

69%

23%

6%1%

83%

17%

Figure 8: Upper Unit - Primary Energy Use!! Figure 9: Heat Losses Breakdown

Further DEAP calculations were carried out, substituting the default inputs with calculated values. A comparison can then be made of the estimated Primary Energy Demand of the different models - 1. Baseline DEAP with Default Values (Default 0.15 Y value, default U-Values etc.), 2. Air Permeability Test Results included, 3. Calculated Y factor, using default psi values (from Part L), 4. Calculated y factor, using modelled psi values, and 5. All Combined. In general the energy performance of all the units improved with the addition of the calculated air permeability and U-Values, but is worse when calculated Y factors are taken into account (using the default PSI values from Part L). The DEAP model using the calculated Y from modelled PSI values clearly demonstrates the actual additional heat loss as as result of the large number of linear thermal bridges.

Figure 10: DEAP Calculations - comparison of results using default and calculated inputs.

Default Air Pressue U-Values Calculated Y Calculated PSI Combined

0

125

250

375

500

360

297

387354

287

378352

265312

362

295

388388

312

407373

270323

Unit A Unit B Unit C

12

Fabric LossesVentilation Losses

Space Heating Water HeatingLighting Pumps, fans etc.

69%

23%

6%1%

83%

17%

Figure 8: Upper Unit - Primary Energy Use!! Figure 9: Heat Losses Breakdown

Further DEAP calculations were carried out, substituting the default inputs with calculated values. A comparison can then be made of the estimated Primary Energy Demand of the different models - 1. Baseline DEAP with Default Values (Default 0.15 Y value, default U-Values etc.), 2. Air Permeability Test Results included, 3. Calculated Y factor, using default psi values (from Part L), 4. Calculated y factor, using modelled psi values, and 5. All Combined. In general the energy performance of all the units improved with the addition of the calculated air permeability and U-Values, but is worse when calculated Y factors are taken into account (using the default PSI values from Part L). The DEAP model using the calculated Y from modelled PSI values clearly demonstrates the actual additional heat loss as as result of the large number of linear thermal bridges.

Figure 10: DEAP Calculations - comparison of results using default and calculated inputs.

Default Air Pressue U-Values Calculated Y Calculated PSI Combined

0

125

250

375

500

360

297

387354

287

378352

265312

362

295

388388

312

407373

270323

Unit A Unit B Unit C

12

Above: Energy Use & Heat Losses within dwelling, Right: BER Rating

E1

320 kWh/m2year

60 kg/m2m2 year

C02

Poor Fabric U-Values. Recessed access decks and balconies - large exposed external surface areas. Thermal Bridging – exposed structural elements & junctions. Low internal surface temperatures. Condensation Risks & Mould. Systems Inefficiencies. DEAP – E1 BER Rating (Area weighted average). Space Heating – 70% of Energy Use. Fabric Losses – over 80% of heat losses. “FABRIC FIRST” approach to Energy Retrofit. Passive House Retrofit Strategy.

Fabric LossesVentilation Losses

Space Heating Water HeatingLighting Pumps, fans etc.

69%

23%

6%1%

83%

17%

Figure 8: Upper Unit - Primary Energy Use!! Figure 9: Heat Losses Breakdown

Further DEAP calculations were carried out, substituting the default inputs with calculated values. A comparison can then be made of the estimated Primary Energy Demand of the different models - 1. Baseline DEAP with Default Values (Default 0.15 Y value, default U-Values etc.), 2. Air Permeability Test Results included, 3. Calculated Y factor, using default psi values (from Part L), 4. Calculated y factor, using modelled psi values, and 5. All Combined. In general the energy performance of all the units improved with the addition of the calculated air permeability and U-Values, but is worse when calculated Y factors are taken into account (using the default PSI values from Part L). The DEAP model using the calculated Y from modelled PSI values clearly demonstrates the actual additional heat loss as as result of the large number of linear thermal bridges.

Figure 10: DEAP Calculations - comparison of results using default and calculated inputs.

Default Air Pressue U-Values Calculated Y Calculated PSI Combined

0

125

250

375

500

360

297

387354

287

378352

265312

362

295

388388

312

407373

270323

Unit A Unit B Unit C

12

Fabric LossesVentilation Losses

Space Heating Water HeatingLighting Pumps, fans etc.

69%

23%

6%1%

83%

17%

Figure 8: Upper Unit - Primary Energy Use!! Figure 9: Heat Losses Breakdown

Further DEAP calculations were carried out, substituting the default inputs with calculated values. A comparison can then be made of the estimated Primary Energy Demand of the different models - 1. Baseline DEAP with Default Values (Default 0.15 Y value, default U-Values etc.), 2. Air Permeability Test Results included, 3. Calculated Y factor, using default psi values (from Part L), 4. Calculated y factor, using modelled psi values, and 5. All Combined. In general the energy performance of all the units improved with the addition of the calculated air permeability and U-Values, but is worse when calculated Y factors are taken into account (using the default PSI values from Part L). The DEAP model using the calculated Y from modelled PSI values clearly demonstrates the actual additional heat loss as as result of the large number of linear thermal bridges.

Figure 10: DEAP Calculations - comparison of results using default and calculated inputs.

Default Air Pressue U-Values Calculated Y Calculated PSI Combined

0

125

250

375

500

360

297

387354

287

378352

265312

362

295

388388

312

407373

270323

Unit A Unit B Unit C

12

Above: Energy Use & Heat Losses within dwelling, Right: BER Rating

E1

320 kWh/m2year

60 kg/m2m2 year

C02

Energy Use Heat Losses

DESIGN BRIEF

•  Full compliance with Irish Building Regulations. •  Compliance with Department of the Environment space.

standards for public sector residential accommodation. •  Mix of one, two, three and four bedroomed dwellings. •  60 – 100 year minimum design lifetime. •  BER of A2 using the DEAP methodology.

Existing Unit

Revised Building Geometry

Optimised Fabric (superinsulation)

Reduce Thermal Bridging (y Factor < 0.04 w/m2 K)

Airtightness (1 ach/hr @ 50 Pa)

Heat Recovery Ventilation

Low Energy Lighting

Improved Boiler & DHW Efficiency

Solar DHW

Group Heating

Biomass / CHP / PV

0 125 250 375 50010

10

10

11

13

10

36

41

90

245

301

27

47

59

78

116

124

142

148

196

352

454

Primary Energy kWh/m2 y

From G to A2 - DEAP Analysis of Energy Retrofit Measures

G"

E2"

C2"

B1"

A3"

A2"

A2"

A3"

B2"

B3"

B2"

Existing Unit

Revised Building Geometry

Optimised Fabric

y Factor - 0.04

Airtightness

Heat Recovery Ventilation

Low Energy Lighting

Boiler & DHW Efficiency

Solar DHW

Group Heating

Biomass

CHP / PV

0 100 200 300 400Primary Energy kWh/m2 y

BER Rating (kWh/m2 y) Space Heating (kWh/m2 y)

Retrofit Strategy - Existing

Demolitions

Why Retrofit?

Embodied Carbon kg/CO2Embodied Carbon of Existing Elements 572,073 Embodied Carbon of Demolished Elements 140,555- EMBODIED CARBON RETAINED USING RETROFIT STRATEGY 431,518

CARBON RETAINED BY RETROFIT (INSTEAD OF NEW BUILD)

Over 1,200 cubic metres of concrete diverted from landfill. 430 Tonnes of Embodied CO2 retained.

New Additions

Community / Sports Hall

Retail / Commercial / Work Units

Coffee Shop Corner Plazza

Brick enclosing walls

End infill block Roof-top Addition

Corner Block

Retrofitted Block

External Metal Balconies (thermally decoupled)

Café Terrace & Street improvements

“Gull-wing” metal roof

Super Insulated wall panels / External cladding

Roof Garden

Retrofitted Block"

Existing Ground Floor / Site Plan

SUSTAINABLE TRANSPORTThe site's location in the heart of Dublin's City Centre is to be optimised by street-scape improvements, tree-planting and enhancement of the public realm and existing pedestrian routes and connections to publictransport infrastructure. A new public space located on the corner of Mercer Street & York Street is to becreated. A Dublin Bikes scheme cycle hire point is to be located immediately outside the apartment block, aswell as secure on site bike storage at ground level within the private courtyard. A small number of secure offstreet car-parking space are provided with the intention of developing a car pooling scheme providing shareduse of electric cars with recharging points powered from the on-site micro-generation facilities.

SUSTAINABLE URBAN COMMUNITIESThe project proposes a mixed-use scheme, with the integration of small commercial, retail and office spaces toreplace the existing ground floor apartment unit along York Street. A 250m2 multi-purpose community hall isprovided to cater for community and arts events, sports activities, farmer's markets and other local initiatives.

Proposed Ground Floor / Site Plan

Community / Sports Hall

Retail / work

playground

car pool

recycling

plant room

private gardens

cafe

Dublin Bikes

SUSTAINABLE TRANSPORTThe site's location in the heart of Dublin's City Centre is to be optimised by street-scape improvements, tree-planting and enhancement of the public realm and existing pedestrian routes and connections to publictransport infrastructure. A new public space located on the corner of Mercer Street & York Street is to becreated. A Dublin Bikes scheme cycle hire point is to be located immediately outside the apartment block, aswell as secure on site bike storage at ground level within the private courtyard. A small number of secure offstreet car-parking space are provided with the intention of developing a car pooling scheme providing shareduse of electric cars with recharging points powered from the on-site micro-generation facilities.

SUSTAINABLE URBAN COMMUNITIESThe project proposes a mixed-use scheme, with the integration of small commercial, retail and office spaces toreplace the existing ground floor apartment unit along York Street. A 250m2 multi-purpose community hall isprovided to cater for community and arts events, sports activities, farmer's markets and other local initiatives.

SUSTAINABLE TRANSPORTThe site's location in the heart of Dublin's City Centre is to be optimised by street-scape improvements, tree-planting and enhancement of the public realm and existing pedestrian routes and connections to publictransport infrastructure. A new public space located on the corner of Mercer Street & York Street is to becreated. A Dublin Bikes scheme cycle hire point is to be located immediately outside the apartment block, aswell as secure on site bike storage at ground level within the private courtyard. A small number of secure offstreet car-parking space are provided with the intention of developing a car pooling scheme providing shareduse of electric cars with recharging points powered from the on-site micro-generation facilities.

SUSTAINABLE URBAN COMMUNITIESThe project proposes a mixed-use scheme, with the integration of small commercial, retail and office spaces toreplace the existing ground floor apartment unit along York Street. A 250m2 multi-purpose community hall isprovided to cater for community and arts events, sports activities, farmer's markets and other local initiatives.

SUSTAINABLE TRANSPORTThe site's location in the heart of Dublin's City Centre is to be optimised by street-scape improvements, tree-planting and enhancement of the public realm and existing pedestrian routes and connections to publictransport infrastructure. A new public space located on the corner of Mercer Street & York Street is to becreated. A Dublin Bikes scheme cycle hire point is to be located immediately outside the apartment block, aswell as secure on site bike storage at ground level within the private courtyard. A small number of secure offstreet car-parking space are provided with the intention of developing a car pooling scheme providing shareduse of electric cars with recharging points powered from the on-site micro-generation facilities.

SUSTAINABLE URBAN COMMUNITIESThe project proposes a mixed-use scheme, with the integration of small commercial, retail and office spaces toreplace the existing ground floor apartment unit along York Street. A 250m2 multi-purpose community hall isprovided to cater for community and arts events, sports activities, farmer's markets and other local initiatives.

SUSTAINABLE TRANSPORTThe site's location in the heart of Dublin's City Centre is to be optimised by street-scape improvements, tree-planting and enhancement of the public realm and existing pedestrian routes and connections to publictransport infrastructure. A new public space located on the corner of Mercer Street & York Street is to becreated. A Dublin Bikes scheme cycle hire point is to be located immediately outside the apartment block, aswell as secure on site bike storage at ground level within the private courtyard. A small number of secure offstreet car-parking space are provided with the intention of developing a car pooling scheme providing shareduse of electric cars with recharging points powered from the on-site micro-generation facilities.

SUSTAINABLE URBAN COMMUNITIESThe project proposes a mixed-use scheme, with the integration of small commercial, retail and office spaces toreplace the existing ground floor apartment unit along York Street. A 250m2 multi-purpose community hall isprovided to cater for community and arts events, sports activities, farmer's markets and other local initiatives.

COMMUNAL ROOF-GARDENA communal garden is located on the existing flat roof of the short-block , with a green roof with allotments forresidents to grow their own food and supply to the on-site Fruit & Veg shop. Provison will be made for honeybees, and hen-houses, as well as communal BBQ area and kids play area, paddling pool, sand pit

WATER RESOURCES & RECYCLINGA covered bin-store and recycling area is provided with the rear courtyard, with direct access from the streetfor regular collection. Recycling storage areas are to be provided within each apartment and to ground floorcommercial units. Organic composting / wormery to roof-top garden. A grey water recycling system isincorporated with collection of rainwater from the new gull-wing roof, storage and distribution to serve toiletcisterns, washing machines and watering of communal gardens / allotments.

cycle store

2 bed units

Second Floor Plan

4 bed apartment

1 bed apartment

2 bed apartments

2 bed apartments

Fourth Floor Plan

Fifth Floor Plan"

3 bed apartment

1 bed apartment

1 bed apartments

roof garden / allotments

COMMUNAL ROOF-GARDENA communal garden is located on the existing flat roof of the short-block , with a green roof with allotments for residents togrow their own food and supply to the on-site Fruit & Veg shop. Provison will be made for honey bees, and hen-houses, aswell as communal BBQ area and kids play area, paddling pool, sand pit

SUSTAINABLE TRANSPORTThe site's location in the heart of Dublin's City Centre is to be optimised by street-scape improvements, tree-planting and enhancement of the public realm and existing pedestrian routes and connections to publictransport infrastructure. A new public space located on the corner of Mercer Street & York Street is to becreated. A Dublin Bikes scheme cycle hire point is to be located immediately outside the apartment block, aswell as secure on site bike storage at ground level within the private courtyard. A small number of secure offstreet car-parking space are provided with the intention of developing a car pooling scheme providing shareduse of electric cars with recharging points powered from the on-site micro-generation facilities.

SUSTAINABLE URBAN COMMUNITIESThe project proposes a mixed-use scheme, with the integration of small commercial, retail and office spaces toreplace the existing ground floor apartment unit along York Street. A 250m2 multi-purpose community hall isprovided to cater for community and arts events, sports activities, farmer's markets and other local initiatives.

COMMUNAL ROOF-GARDENA communal garden is located on the existing flat roof of the short-block , with a green roof with allotments for residents togrow their own food and supply to the on-site Fruit & Veg shop. Provison will be made for honey bees, and hen-houses, aswell as communal BBQ area and kids play area, paddling pool, sand pit

COMMUNAL ROOF-GARDENA communal garden is located on the existing flat roof of the short-block , with a green roof with allotments for residents togrow their own food and supply to the on-site Fruit & Veg shop. Provison will be made for honey bees, and hen-houses, aswell as communal BBQ area and kids play area, paddling pool, sand pit

COMMUNAL ROOF-GARDENA communal garden is located on the existing flat roof of the short-block , with a green roof with allotments forresidents to grow their own food and supply to the on-site Fruit & Veg shop. Provison will be made for honeybees, and hen-houses, as well as communal BBQ area and kids play area, paddling pool, sand pit

WATER RESOURCES & RECYCLINGA covered bin-store and recycling area is provided with the rear courtyard, with direct access from the streetfor regular collection. Recycling storage areas are to be provided within each apartment and to ground floorcommercial units. Organic composting / wormery to roof-top garden. A grey water recycling system isincorporated with collection of rainwater from the new gull-wing roof, storage and distribution to serve toiletcisterns, washing machines and watering of communal gardens / allotments.

Roof Plan"

COMMUNAL ROOF-GARDENA communal garden is located on the existing flat roof of the short-block , with a green roof with allotments forresidents to grow their own food and supply to the on-site Fruit & Veg shop. Provison will be made for honeybees, and hen-houses, as well as communal BBQ area and kids play area, paddling pool, sand pit

WATER RESOURCES & RECYCLINGA covered bin-store and recycling area is provided with the rear courtyard, with direct access from the streetfor regular collection. Recycling storage areas are to be provided within each apartment and to ground floorcommercial units. Organic composting / wormery to roof-top garden. A grey water recycling system isincorporated with collection of rainwater from the new gull-wing roof, storage and distribution to serve toiletcisterns, washing machines and watering of communal gardens / allotments.Solar hot water

Rain water harvesting

Solar PV

•  Internal Floor Area -74 m2 (Full Compliance with DoE Space Guidelines)

•  Fully Wheelchair Accessible •  Compact Form – A/V Ratio 0.54

m2/m3 •  Optimised Fabric U-Values ≤ 0.12

W/m2 K •  Window & Doors U-Values ≤ 0.85

W/m2 K •  Elimination of Thermal Bridges •  Air Tightness ⩽ 1 ac/hr @ 50 Pa •  MVHR ⩾ 75% efficiency •  South / East glazing orientation •  Balconies / Screens to provide

Summer Shading

TYPICAL 2 BED UNIT Passivhaus Design Principals

Kitchen – 7m2 Bedroom – 12m2

Balcony – 12m2

Living – 22m2

Bedroom – 12m2

§"

Internal Floor Area: 46m2 27m2 Terrace (south facing) South Facing Glazing Summertime Shading

1 BED Studio (rooftop)

600

1 - Terned Stainless Steel standing seam roof panels

2 - Separating membrane

3 - 25mm Softwood / Plywood shuttering

4 - 80mm Softwood cross battens / ventilation space

5 - 28mm GUTEX Multiplex-top vapour permeable sarkingboard

6 - 360mm Hemp / Fleece insulation between box beams /double T beams

7 - 18mm OSB panel, with Intellio air tight membrane /vapour barrier

8 - 50mm Thermafleece lambswool insulation betweensoftwood battens

9 - 2 layer Gypsum plasterboard (fire protection panels)

980

1 - 200-400mm Vegetation Layer / Soil

2 - Filter Layer / Fleece

3 - 50mm drainage layer

4 - 20mm rubber granule projective mat with 200mmoverlapping joints

5 - EPDM membrane / root-barrier

7 - 420mm Cork Insulation / 360mm EPS Insulation

8 - PE Vapour Barrier

10 - 200mm Reinforced concrete roof slab (existing slabstrengthened)

11 - Existing 60mm wood wool slab and plaster ceiling

FLAT ROOF (GREEN ROOF) - 0.10 Wm2/K

1 - 10mm Silicate Plaster

2 - 200mm Hemp / Mineral Wool EWI

3 - 105mm Brick outer leaf (existing)

4 - Existing 60mm Cavity - filled with blown celluloseinsulation / EPS

5 - 215mm concrete block inner leaf (existing)

6 - Intellio air tight membrane, 50mm services zone withThermafleece sheepswool insulation

7 - 2 layer gypsum fibreboard / Fermacell boards

3 4 5

EXISTING CAVITY WALLS (GABLE) - 0.12 Wm2/K

6 7

450

1 - 15mm Silicate Plaster, on medium bed thin set

2 - 120mm Hemp / Mineral Wool insulation

3 - 28mm GUTEX Multiplex-top vapour permeable sarkingboard

4 - 200mm Hemp Flax / Cellulose Insulation

5 - 25mm OSB panel

6 - Intellio air tight membrane / vapour barrier

7 - 50mm Thermafleece lambswool insulation betweensoftwood battens

8 - 2 layer Gypsum Fiberboards / Fermacell

9 - Passivhaus standard triple glazed timber/aluminiumwindow - Uw,eff-value ≤ 0.85 W/m2K

10 - Aluminium / stainless steel projecting window sill

TIMBER PANEL WALLS WITH EWI - 0.12 Wm2/K1 2

3 4 5

6

7

8

9

10

PSI Factor = 0.012 W/mK

PSI Factor = 0.025 W/mK

1 - Natural Linoleum floor finish

2 - 30mm Fibre-reinforced poured Cement Screed

3 - PE Soft foam, with glued joints

4 - 220mm EPS Insulation / Perlite (50mm to existing floorslabs)

5 - Bitumen damp proof membrane

6 - 150mm Reinforced concrete slab (infill to edge)

7 - New reinforced concrete ground beam

8 - 100mm XPS Vertical perimeter insulation to all edges,800mm deep

9 - Silicate Plaster / Brick slip cladding on Hemp EWI, oninsulated timber panels

1

GROUND FLOOR SLAB - 0.15 Wm2/K

23

4

5

6

78

9PSI Factor = -0.051 W/mK

600

1 - Terned Stainless Steel standing seam roof panels

2 - Separating membrane

3 - 25mm Softwood / Plywood shuttering

4 - 80mm Softwood cross battens / ventilation space

5 - 28mm GUTEX Multiplex-top vapour permeable sarkingboard

6 - 360mm Hemp / Fleece insulation between box beams /double T beams

7 - 18mm OSB panel, with Intellio air tight membrane /vapour barrier

8 - 50mm Thermafleece lambswool insulation betweensoftwood battens

9 - 2 layer Gypsum plasterboard (fire protection panels)

980

1 - 200-400mm Vegetation Layer / Soil

2 - Filter Layer / Fleece

3 - 50mm drainage layer

4 - 20mm rubber granule projective mat with 200mmoverlapping joints

5 - EPDM membrane / root-barrier

7 - 420mm Cork Insulation / 360mm EPS Insulation

8 - PE Vapour Barrier

10 - 200mm Reinforced concrete roof slab (existing slabstrengthened)

11 - Existing 60mm wood wool slab and plaster ceiling

FLAT ROOF (GREEN ROOF) - 0.10 Wm2/K

1 - 10mm Silicate Plaster

2 - 200mm Hemp / Mineral Wool EWI

3 - 105mm Brick outer leaf (existing)

4 - Existing 60mm Cavity - filled with blown celluloseinsulation / EPS

5 - 215mm concrete block inner leaf (existing)

6 - Intellio air tight membrane, 50mm services zone withThermafleece sheepswool insulation

7 - 2 layer gypsum fibreboard / Fermacell boards

3 4 5

EXISTING CAVITY WALLS (GABLE) - 0.12 Wm2/K

6 7

450

1 - 15mm Silicate Plaster, on medium bed thin set

2 - 120mm Hemp / Mineral Wool insulation

3 - 28mm GUTEX Multiplex-top vapour permeable sarkingboard

4 - 200mm Hemp Flax / Cellulose Insulation

5 - 25mm OSB panel

6 - Intellio air tight membrane / vapour barrier

7 - 50mm Thermafleece lambswool insulation betweensoftwood battens

8 - 2 layer Gypsum Fiberboards / Fermacell

9 - Passivhaus standard triple glazed timber/aluminiumwindow - Uw,eff-value ≤ 0.85 W/m2K

10 - Aluminium / stainless steel projecting window sill

TIMBER PANEL WALLS WITH EWI - 0.12 Wm2/K1 2

3 4 5

6

7

8

9

10

PSI Factor = 0.012 W/mK

PSI Factor = 0.025 W/mK

1 - Natural Linoleum floor finish

2 - 30mm Fibre-reinforced poured Cement Screed

3 - PE Soft foam, with glued joints

4 - 220mm EPS Insulation / Perlite (50mm to existing floorslabs)

5 - Bitumen damp proof membrane

6 - 150mm Reinforced concrete slab (infill to edge)

7 - New reinforced concrete ground beam

8 - 100mm XPS Vertical perimeter insulation to all edges,800mm deep

9 - Silicate Plaster / Brick slip cladding on Hemp EWI, oninsulated timber panels

1

GROUND FLOOR SLAB - 0.15 Wm2/K

23

4

5

6

78

9PSI Factor = -0.051 W/mK

Pitched roof – 0.10 W/m2K

Flat roof – 0.10 W/m2K

Wall Panels – 0.12 W/m2K

Ground Floor – 0.15 W/mK

RETAINED MATERIAL - EMBODIED CARBONRETAINED MATERIAL - EMBODIED CARBONRETAINED MATERIAL - EMBODIED CARBONRETAINED MATERIAL - EMBODIED CARBONRETAINED MATERIAL - EMBODIED CARBONRETAINED MATERIAL - EMBODIED CARBONMaterial Name Volume [m3] Density kg/m3 Weight kg Carbon Content kg CO2/kg Embodied Carbon kg/CO2

Common Brick 382.00 1700.00 649400.00 0.24 155,856Lightweight Concrete 146.00 1400.00 204400.00 0.13 26,981Plaster 18.00 1200.00 21600.00 0.11 2,376Structural Concrete 600.00 2400.00 1440000.00 0.16 228,960

414,173

Existing Blocks (Area Weighted Average)

Retrofitted Block (Area Weighted Average)

0 15 30 45 60

SUSTAINABILITY RESPONSEThe retrofit strategy incorporate a number of key sustainability strategies and aims to reduce energy use,emissions, use of resources and create a sustainable, low-carbon, urban development:

C02 EMMISSION / ENERGY IN USEThe fabric and systems strategy proposes a building with ultra low space heating and domestic hot waterdemands. These demands are met by on-site renewables (solar hot water & PV) and a wood chip biomassboiler. All dwelling units will be fitted with A++ rated appliances and LED low energy lighting. The estimated inuse C02 emissions of the existing dwellings are calculated to be reduced by over 90%. The incorporation ofadditional on site micro generation in the form of a CHP and/or PV panels can give a near zero carbon building.

EMBODIED CARBON / PRODUCTION EMISSIONSThe retention of the main structural frame of the existing buildings allows for the retention of over 750m3 ofconcrete material and the re-use of 300m3 of brickwork. Not only is this material diverted from landfill, there isan embodied carbon value of over 4,000 kg of C02.

SUSTAINABLE / LOW CARBON MATERIAL SELECTIONFabric and material selection is guided by principals of ecological, low-carbon impact as far as is practical.New concrete structural frame and floor slabs will use low-carbon cement. Wall and roof envelope are all oftimber frame using minimal structural members, and renewable timber sources. Fabric & Insulation materialsare selected for from a renewable, ecological sources, wherever practical non plastic, natural, organic materialsare selected with low VOCs content and hygroscopic properties. Insulation materials are selected for their low-embodied carbon content, renewable source and potential for re-use / recycling at end of life.

CO2 Emmissions (kg/m2 y)

RETAINED MATERIAL - EMBODIED CARBONRETAINED MATERIAL - EMBODIED CARBONRETAINED MATERIAL - EMBODIED CARBONRETAINED MATERIAL - EMBODIED CARBONRETAINED MATERIAL - EMBODIED CARBONRETAINED MATERIAL - EMBODIED CARBONMaterial Name Volume [m3] Density kg/m3 Weight kg Carbon Content kg CO2/kg Embodied Carbon kg/CO2

Common Brick 382.00 1700.00 649400.00 0.24 155,856Lightweight Concrete 146.00 1400.00 204400.00 0.13 26,981Plaster 18.00 1200.00 21600.00 0.11 2,376Structural Concrete 600.00 2400.00 1440000.00 0.16 228,960

414,173

Existing Blocks (Area Weighted Average)

Retrofitted Block (Area Weighted Average)

0 15 30 45 60

SUSTAINABILITY RESPONSEThe retrofit strategy incorporate a number of key sustainability strategies and aims to reduce energy use,emissions, use of resources and create a sustainable, low-carbon, urban development:

C02 EMMISSION / ENERGY IN USEThe fabric and systems strategy proposes a building with ultra low space heating and domestic hot waterdemands. These demands are met by on-site renewables (solar hot water & PV) and a wood chip biomassboiler. All dwelling units will be fitted with A++ rated appliances and LED low energy lighting. The estimated inuse C02 emissions of the existing dwellings are calculated to be reduced by over 90%. The incorporation ofadditional on site micro generation in the form of a CHP and/or PV panels can give a near zero carbon building.

EMBODIED CARBON / PRODUCTION EMISSIONSThe retention of the main structural frame of the existing buildings allows for the retention of over 750m3 ofconcrete material and the re-use of 300m3 of brickwork. Not only is this material diverted from landfill, there isan embodied carbon value of over 4,000 kg of C02.

SUSTAINABLE / LOW CARBON MATERIAL SELECTIONFabric and material selection is guided by principals of ecological, low-carbon impact as far as is practical.New concrete structural frame and floor slabs will use low-carbon cement. Wall and roof envelope are all oftimber frame using minimal structural members, and renewable timber sources. Fabric & Insulation materialsare selected for from a renewable, ecological sources, wherever practical non plastic, natural, organic materialsare selected with low VOCs content and hygroscopic properties. Insulation materials are selected for their low-embodied carbon content, renewable source and potential for re-use / recycling at end of life.

CO2 Emmissions (kg/m2 y)Ecological Fabric Construction

Construction Fabric Details

=

Space Heating Demand for single existing 1 bed Unit (40m2) - 11,063 kWh/year

Space Heating Demand for Entire 44 Dwellings Units (3,246m2) - 10,753 kWh/year

Passive House - Near Zero Space Heating Demand for most of dwellings units

AREA AVERAGED BER RATINGS

UNIT NUMBER

BEDS AREA m2

LOCATION ORIENTATIONSPACE

HEATING kWh/Year

WATER HEATING kWh/Year

PRIMARY ENERGY kWh/Year

C02 EMISSIONS

kg/Year

C02 EMISSIONS kg/m2 Year

BER RATING kWh/m2

Year

BER RATING

UNIT 01 1 BED 63 GROUND - GABLE EAST/WEST 692 1,936 2,815 87 1 45 A2

UNIT 02 2 BED 75 GROUND - MID EAST/WEST 637 2,137 3,350 115 2 45 A2

UNIT 03 2 BED 75 GROUND - GABLE EAST/WEST 760 2,137 3,543 125 2 47 A2

UNIT 04 2 BED 75 MID-MID SOUTH 7 2,137 2,627 160 2 35 A2

UNIT 05 2 BED 75 MID-MID SOUTH 7 2,137 2,627 160 2 35 A2

UNIT 06 2 BED 75 MID-MID SOUTH 7 2,137 2,627 160 2 35 A2

UNIT 07 2 BED 75 MID-MID SOUTH 7 2,137 2,627 160 2 35 A2

UNIT 08 1 BED 62 MID-CORNER SOUTH/EAST 245 1,919 2,780 120 2 45 A2

UNIT 09 2 BED 77 MID-CORNER EAST/WEST 345 2,170 2,827 120 2 37 A2

UNIT 10 2 BED 75 MID-MID EAST/WEST 54 2,137 2,678 158 2 36 A2

UNIT 11 2 BED 75 MID-GABLE EAST/WEST 113 2,137 2,902 120 2 39 A2

UNIT 12 4 BED 112 END BLOCK-MID SOUTH 879 2,719 4,035 288 3 36 A2

UNIT 13 2 BED 75 MID-MID SOUTH 7 2,137 2,725 120 2 36 A2

UNIT 14 2 BED 75 MID-MID SOUTH 7 2,137 2,725 120 2 36 A2

UNIT 15 2 BED 75 MID-MID SOUTH 7 2,137 2,627 160 2 35 A2

UNIT 16 2 BED 75 MID-MID SOUTH 7 2,137 2,725 120 2 36 A2

UNIT 17 1 BED 62 CORNER-MID SOUTH/EAST 350 1,159 2,271 120 2 37 A2

UNIT 18 2 BED 77 MID-CORNER EAST/SOUTH 245 2,170 2,827 120 2 37 A2

UNIT 19 2 BED 75 MID-MID EAST/WEST 54 2,137 2,678 158 2 36 A2

UNIT 20 2 BED 75 MID - GABLE EAST/WEST 113 2,137 2,902 120 2 39 A2

UNIT 21 4 BED 112 END BLOCK-MID SOUTH 879 2,719 4,035 288 3 36 A2

UNIT 22 2 BED 75 MID-MID SOUTH 7 2,137 2,627 160 2 35 A2

UNIT 23 2 BED 75 MID-MID SOUTH 7 2,137 2,627 160 2 35 A2

UNIT 24 2 BED 75 MID-MID SOUTH 7 2,137 2,627 160 2 35 A2

UNIT 25 2 BED 75 MID-MID SOUTH 7 2,137 2,627 160 2 35 A2

UNIT 26 1 BED 62 CORNER-MID SOUTH/EAST 456 1,159 2,271 99 2 37 A2

UNIT 27 2 BED 77 MID-CORNER EAST/SOUTH 345 2,170 2,827 120 2 37 A2

UNIT 28 2 BED 75 MID-MID EAST/WEST 54 2,137 2,678 158 2 36 A2

UNIT 29 2 BED 75 MID - GABLE EAST/WEST 4 2,137 2,762 120 2 37 A2

UNIT 30 4 BED 112 END BLOCK-UPPER SOUTH 879 2,719 4,035 288 3 36 A2

UNIT 31 2 BED 75 MID-UPPER SOUTH 7 2,137 2,758 160 2 37 A2

UNIT 32 2 BED 75 MID-UPPER SOUTH 7 2,137 2,758 160 2 37 A2

UNIT 33 2 BED 75 MID-UPPER SOUTH 7 2,137 2,758 160 2 37 A2

UNIT 34 2 BED 75 MID-UPPER SOUTH 7 2,137 2,758 160 2 37 A2

UNIT 35 1 BED 62 CORNER-MID SOUTH/EAST 456 1,919 2,271 120 2 37 A2

UNIT 36 2 BED 77 CORNER-UPPER EAST/SOUTH 671 2,170 3,511 132 2 46 A2

UNIT 37 2 BED 75 UPPER-MID EAST/WEST 719 2,137 3,490 120 2 47 A2

UNIT 38 2 BED 75 UPPER - GABLE EAST/WEST 627 2,137 3,383 131 2 45 A3

UNIT 39 3 BED 98 END BLOCK-ROOF SOUTH/EAST 144 2,506 3,787 266 3 39 A3

UNIT 40 1 BED 46 ROOF UNIT SOUTH 35 1,640 1,714 91 2 37 A2

UNIT 41 1 BED 46 ROOF UNIT SOUTH 35 1,640 1,714 91 2 37 A2

UNIT 42 1 BED 46 ROOF UNIT SOUTH 35 1,640 1,714 91 2 37 A2

UNIT 43 1 BED 46 ROOF UNIT SOUTH 35 1,640 1,714 91 2 37 A2

UNIT 44 1 BED 62 ROOF-CORNER EAST/SOUTH 780 1,919 2,947 102 2 48 A2

ASSESSED UNITS 444 1627 12694 17732 931 2 40 A2

ALL UNITS 3,246 10,753 91,476 123,311 6,399 2 38 A2

A2 31 kWh/m2year

2.2 kg/m2year

C02

A2 31 kWh/m2year

2.2 kg/m2year

C02

AREA AVERAGED BER RATING FOR 6 ASSESSED UNITS

AREA AVERAGED BER RATING FOR ENTIRE DEVELOPMENT

40 kWh/m2 year

38 kWh/m2 year

DGNB Pre-certificate Gold Award

DGNB Pre-certificate Gold Award

DGNB Pre-certificate Gold AwardLEED Gold Award

DGNB Pre-certificate Gold AwardBREEAM “Excellent” Award

Preliminary version for pilot phase - subject to alterations! _________________________________________________________________________________

Quality-Approved Energy Retrofit with PH Components - Criteria for residential-use refurbished buildings, as of 17.08.2010 13 / 16

4 Testing procedure

An informal application for the certificate can be made to the selected certifier. The required documents must be filled in completely and submitted to the tester. The documents must be checked at least once. Depending on the procedure, further testing may also be arranged.

Note: If possible, checking of the relevant documents should be carried out during the planning stage so that potential corrections or suggestions for improvement can be considered at an early stage.

After the assessment the contractor will receive the results, with corrected calculation and suggestions for improvement, if applicable. Reviewal of the construction work is not the object of the certification. However, evidence of the building's airtightness, the adjustment protocol of the ventilation unit and the construction manager's declaration and at least one photograph must be provided. If the technical accuracy of the necessary evidence for the building is confirmed and the criteria given above are adhered to, the following certificate will be issued:

Issuing only certifies the accuracy of the documents submitted, in accordance with the level of technological development of Passive House components. The assessment relates neither to the monitoring of the work, nor to the supervision of the user behaviour. The liability for the planning remains with the responsible technical planners, and the liability for the implementation lies with the appropriate construction management. The Passive House Institute logo may only be used in connection with certificates.

Additional quality assurance of the construction work by the certifying body is particularly expedient when the construction management has no experience with the modernisation of existing buildings using Passive House components.

We reserve the right to adapt criteria and calculation procedures to advancing technical development.

Existing Blocks (Area Weighted Average)

Retrofitted Block (Area Weighted Average)

0 15 30 45 60

5

59

CO2 Emmissions (kg/m2 y)

259

BER A2 Rating for all dwellings units. Nearly Zero-Energy Building (“nZEB”) - 90% Reduction in Primary Energy Use. 95% Reduction in CO2 Emissions in Use. Ecological, low carbon, long-life construction materials. Sustainable Lifecycle – 100 + year building lifespan. DGNB & LEED Gold Awards, BREEAM excellent rating. Passivhaus EnerPHit certified Energy Retrofit.

Questions ?