architype - standardised passivhaus schools, ecobuild uk 2014
DESCRIPTION
Presentation on Architype's development of a standardised approach to design & construction of Passivhaus Schools given on the Trada Stand at Ecobuild UK 2014, in the context on the UK Government's to standardise school buildings.TRANSCRIPT
Standardised!Passivhaus!Schools
Elrond Burrell, Architype
Be Social #Sustainability #Passivhaus #Timber @ElrondBurrell @TRADA_ @ArchitypeUK @Ecobuild_Now
We design
Life Enhancing!Genuinely Sustainable Architecture
Standardised to bring to or make of an established standard size, weight, quality, strength to compare with or test by a standard to chose or establish a standard for
Why Standardise? To save money To save time To guarantee performance
To Save Money
To Save Money In austere economic times this is surely a good thing? With limited money available standardising means MORE schools can be built BUT…
To Save Money Is reducing capital cost the only issue? Minimising construction cost now, may increase long term or future costs SURELY … we should be looking at whole life costs?
To Save Time
To Save Time To avoid wasting time is surely a good thing? Schools should focus on teaching, not designing new buildings BUT…
To Save Time What about… The education value of pupil and teacher involvement in the design process? The importance of buildings meeting the practical needs and expressing the character of the individual school and community?
To Guarantee Performance
To Guarantee Performance Again – surely a good thing To guarantee energy consumption, internal comfort and user satisfaction BUT…
To Guarantee Performance Do any of the standardised solutions achieve this? – are they even trying? What energy standards are being set? What comfort standards are being set? How are these being delivered? Can they be guaranteed?
Why Standardise? To save money To save time To guarantee performance
To Save Time
To Save MAKE Time
To MAKE Time “The community love their building, they feel it belongs to them, the respect it and care for it” “The layout really works for us, because the architects listened to our ideas and responded to our ethos and practical needs” “The building has helped us move from Satisfactory to Good in our latest Ofsted”
To MAKE Time
2
Engagingly collaborative Elegantly simple Radically ecological Uplifting and enriching Robust and timeless
To Guarantee Performance
To Guarantee Performance Most school buildings do not perform in terms of user comfort Most school buildings use 5+ times as much energy as predicted HOW do we change this?
To Guarantee Performance Monitor buildings and learn from our mistakes Support users in occupying their buildings Avoid tick box compliance processes Set standards + Use techniques that will deliver them
Occupied Days
Unoccupied Days
Baseload
A-Typical Summer Profile Shape
substantial energy use when building is or is nearly empty in
morning
Half-hourly Electrical Demand Profiles
Admin staff arrive at 7:30am, teaching staff arrive between 8 - 8:45
Major electrical use before building is occupied, in both summer and winter (6 cleaners arrive @ 5am)
What is Passivhaus?
What is Passivhaus? Rigorous energy standard Rigorous comfort standard Rigorous quality assurance standard
photovoltaics
solar thermal
Biomass gs heat pump
Heating energy 120 kWh/m2 Primary energy 300+ kWh/m2
Consumption and carbon emissions offset by renewables
0.6 ac @ 50 pascals
Heating energy 15 kWh/m2 Primary energy 120 kWh/m2 0.6 ac @ 50 pascals energy consumption and carbon emissions reduced simply by using less energy!
gas boiler
Passivhaus Standard
120 kWh
310 kWh
189 kWh
120 kWh
15 kWh
105 kWh
Primary energy Thermal Heating
Passivhaus Standard
120 kWh
310 kWh
189 kWh
120 kWh
15 kWh
105 kWh
Passivhaus buildings are performing BETTER than predicted
58 kWh
15 kWh
43 kWh
Primary energy Thermal Heating
Passivhaus Standard
120 kWh
189 kWh
120 kWh
15 kWh
105 kWh
Passivhaus buildings are performing BETTER than predicted
58 kWh
15 kWh
43 kWh
310 kWh
Primary energy Thermal Heating
Achieving Passivhaus? Meet a series of technical standards
o fabric U-values of 0.15 and windows/doors of 0.8 o airtightness of 0.6 @50 pascals o elimination of thermal bridging
Model the building using PHPP o optimise the orientation, form and fabric o prove within thermal energy limit of 15 kWh/m2.a o prove within primary energy limit of 120 kWh/m2.a o confirm within limits of overheating
Undergo the rigorous certification process
Adopting Passivhaus? It’s based on sound building physics and evidence It’s based on reducing energy by design, instead of offsetting carbon with add-ons It encourages integrated design thinking + rigorous discipline It drives simplicity of form, detailing and construction It works!
Achieving PH Schools
Oakmeadow Primary School Bushbury Hills Primary School
Optimising the Form
Single storey Two storey
14m deep
18m deep
22m deep
22m
dee
p fa
ce E
/W
14m deep
18m deep
22m deep
22m
dee
p fa
ce E
/W
Optimising the Form
Ground floor plan: Oakmeadow Primary School
Optimising the Form
Section: Oakmeadow Primary
Design Out Thermal Bridging
Structural slab Lo
ad
Insulation
Insu
latio
n
Structural slab Lo
ad
Insulation
Insu
latio
n
Model & Test every detail
Design Out Thermal Bridging
Structural slab Lo
ad
Insulation
Insu
latio
n
Structural slab Lo
ad
Insulation
Insu
latio
n
Model & Test every detail
Design Out Thermal Bridging
Keep structure within the thermal envelope
Design Out Thermal Bridging
OR Keep structure outside the thermal envelope
Design In Airtightness
By simplifying every detail
Optimise SG & Ventilation
Simple efficient window arrangement Simple secure night ventilation grilles
Optimise MVHR & Ducts
Fresh air supplied to all main rooms
MVHR
Collaborate
Across the whole team - consultants, specialists, client, contractor, and supply chain
Delivering Design Quality
No compromise of brief, client aspiration, architectural quality or sustainable materials palette
Conclusion
DatePassed by
For the original drawing size
17.06.10Checked by
Scale
Drawn by
N
CheckedByMark
Drawing Originator
Drawing Title
Check this drawing is the latest revision.Do not scale from this drawing.Do not use the information on this drawing without checking all dimensions on site.Do not use any areas indicated for either valuation, purchase, sale or any other form of legally binding contract.Do not reproduce any part of this drawing without prior written consent.
Job No
Notes
6225Drawing No
PL 100Revision
-
Ground & First Floor Plans
Drawing StatusPLANNING SUBMISSION
SC MP -
1:100 A1
Key Plan
Project Title
Swillington Primary School
Contractor Client
Employer
REVISIONS
Date Details
Interserve Project Services Ltd1 Thunderhead Ridge, Glasshoughton, Castleford,West Yorkshire, WF10 4UATel: 01977 522300 Fax: 01977 522301
Architype, Upper Twyford, Hereford, HR2 8ADt 01981 542111 f 01981 542112 e [email protected]
GROUND FLOOR
Total Gross Internal Area
1427.6 Sq m
CANOPY CANOPY
CANOPY CANOPY
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B
SHOWER TROLLEY Nom. 1950 x 750mm
A B
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A
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KEY
TEACHING AREAS
STAFF AREAS
AUXILLARY AREAS
STORAGE
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COMMUNITY FACILITIES
CIRCULATION
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SOFT
READING
AREA
LIBRARY
AREA
ICT
AREAPRACTICAL
AREA
FOOD
TECHNOLOGY
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AREA
OFFICE
DRY
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TOILET
LOBBY
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MI ROOM�����
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MAIN
RECEPTION/
WAITING AREA18.1�
Poss
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futu
re f
old
ing p
art
itio
n
LOBBY6.7�
OPENING
ROOF LIGHT
BARRIER
MATTING
WET
AREA
BARRIER
MATTING
WET
AREABARRIER
MATTINGWET
AREA
BARRIER
MATTINGWET
AREA
BARRIER
MATTINGWET
AREA
BARRIER
MATTINGWET
AREA
BARRIER
MATTING
WET
AREA
BARRIER
MATTING
WET
AREA
CANOPY
LOW LEVEL PARTITION
LO
W L
EV
EL P
ARTIT
ION
2.2
m F
OLD
ING
PA
RTIT
ION
2.2
m F
OLD
ING
PA
RTIT
ION
BARRIER MATTING
BARRIER MATTING BARRIER MATTING
SERVER
LOCATION
(TBC)
CARETAKER/
CLEANER
STORE�
LOCKERS
CLO
AK
S
CLO
AK
S
2.2
m F
OLD
ING
PA
RTIT
ION
CIRCULATION32.6�
CIRCULATION10.2�
CIRCULATION11.6�
KEY STAGE 2
HUB SPACE152.8�
KEY STAGE 1
HUB SPACE78.6�
MAIN HALL
Possible Access Hatch
PLANT
ROOM26.8�
void
CIRCULATION16.7�
FIRST FLOOR
Total Gross Internal Area
44.3 Sq m
To Guarantee Performance “We feel that our children are more alert and attentive in lessons due to the amount of daylight in classrooms and the fresh air throughout the school. The fact that the new school is built to passivhaus standards means that learning has been enhanced. Our pupils are comfortable, secure and stimulated by their new environment; hence they learn very well!” Sara Morris: Head Teacher, Oak Meadow Primary School
To Guarantee Performance
“Our gas bill was 90% less in the first year of occupying our new building, compared to the old one”
Sara Morris: Head Teacher, Oak Meadow Primary School
To Save Money Capita Symonds ‘typical sustainable school’
£2,151/sqm (M&E £454/sqm) St Luke’s 2009 BREEAM Excellent
£2,080/sqm (M&E £357/sqm) Oakmeadow Passivhaus School
£1,780/sqm (M&E £323/sqm) Standardised Passivhaus School <£1,550/sqm (M&E <£300/sqm)
Why Standardise Schools? To save money?
ü YES, but focus on SIMPLICITY to achieve better value not just CHEAP
To save time? Ø NO, if this means negating the value of engagement in
the process
To guarantee performance? ü YES, by setting PASSIVHAUS as the only evidence
based standard that works
Standardised Passivhaus Basing design on the evidence of what actually works
Striving for simplicity of design to deliver more for less
Image: Albert, Righter and Tittman Architects
www.architype.co.uk