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Name: David Ledwith
Presentation: Design Strategy for the Deep Retrofit of a Typical Flat Top Social Housing Block
Brief: To Develop a Holistic Strategy for the Sustainable Regeneration of the Housing Block Type, with Baseline Targets of achieving an A2 BER Rating and compliance with Current Building Regulations
EXISTING PROPOSED
EXISTING BUILDING
• 2 x FIVE STOREY BLOCKS• 38 UNITS (MIXTURE of 1,2,3,4 BED)• SINGLE STOREY GROUND FLOOR UNITS & 2 X TWO STOREY DUPLEXES ABOVE• AVERAGE BER OF E1 320kWhr/sq.m/yr•CARBON EMISSIONS OF 128 TONNES
DESIGN ISSUES
1. ENERGY PERFORMANCE
2. TECHNICAL PERFORMANCE
3. SOCIAL & CIVIC PERFORMANCE
- BUILDING HAS A VERY POOR THERMAL PERFORMANCE
- MINIMAL TO ZERO LEVELS OF INSULATION- HIGH LEVELS OF THERMAL BRIDGING- LOW EFFICIENCY HEATING SYSTEMS- CONDENSATION & MOULD PROBLEMS- HIGH CARBON EMISSIONS
- DWELLINGS ARE SMALL (59 sq.m -2 Bed Duplex)- ACCESSIBILITY & FIRE SAFETY ISSUES- GROUND FLOOR LAYOUT & DEFENSIBLE SPACE
- BUILDINGS SET BACK & SURROUNDED WITH RAILINGS- POOR CONTRIBUTION TO URBAN STREETSCAPE- SOCIAL HOUSING STIGMA- FUEL POVERTY
POSITIVES- WELL BUILT STRUCTURES- STRONG COMMUNITIES
3. CREATION COMMUNITY SPACES
2. RE-IMAGINATION OFTHE GROUND PLANE
1. NEW THERMAL ENVELOPE
DESIGN SOLUTION
NEW THERMAL ENVELOPE
EXISITING
STRIP BACK TO ‘WINE RACK’ STRUCTURAL LAYOUT
CONSTRUCT NEW INSULATION LAYER AND BALCONIES
THE SECTION
NEW GROUND FLOOR
- NEW SINGLE STOREY PLINTH- NEW STAIRS & LIFTS - SHARED COURTYARD FORMED- UNITS ACCESSED FROM STREET- COMMUNAL FACILITIES- SHARED LAUNDRY- SECURE STORAGE- COMMUNITY ROOMS
FIRST FLOOR (& THIRD FLOOR)
- PLINTH FORMS A GARDEN - PLAYGROUND AREA- 14 UNITS DUPLEX UNITS- DUPLEX UNIT TYPE - EXTENDED INTO BALCONY &
WALKWAY- BATHROOM MOVED DOWNSTAIRS
SECOND FLOOR (& FOURTH FLOOR)
- UPPER FLOOR OF DUPLEX UNITS- THREE BED UNIT- TRIPLE ASPECT- UNIVERSALLY ACCESSSIBLE
VIEW OF GARDEN LEVEL
FIFTH FLOOR
- NEW FLOOR LEVEL- 3 NO. ONE BED UNITS- COMMUNAL PENTHOUSE ROOM- ALOTMENTS- 10 SQ.M PER UNIT
AXO
- GARDEN PLINTH WITH RECYLING FACILITIES AND CAR CHARGING POINTS
- ALOTMENTS ON THE ROOF- SOLAR PANELS REDUCE ENRGY
DEMAND- BIOMASS FUELLED CHP BOILER USED
TO PROVIDE HEAT
SUMMARY
- NEW URBAN BLOCK CREATED- INTEGRATED AT GROUND FLOOR LEVEL WITH
THE CITY- SAME NUMBER OF UNITS MAINTAINED – 38- UNIT SIZES HAVE INCREASED BY ONE THIRD- DEFINED OPEN SPACES CREATED- COMMUNAL ACCOMODATION CREATED- GARDEN & ALOTMENTS PROVIDED- A2 BER RATING WITH SOLARPANELS & CHP- 36 kWhr/sq.m/yr- NEGATIVE CARBON EMISSIONS –
4.1kgCO2/sq.m/yr
THANK YOU