Sustainable Passivhaus School Design
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Transcript of Sustainable Passivhaus School Design
SUSTAINABLE!PASSIVHAUS�SCHOOL!DESIGNCEFPI Wellington, 19 Feb 2015
Elrond Burrell !Associate, Architype Ltd [email protected]
We design
Life Enhancing!
Genuinely Sustainable Architecture!
Overview!Time Performance Passivhaus Acoustics Cost Conclusion
Make Time!
2
Engagingly collaborative Elegantly simple Radically ecological Uplifting and enriching Robust and timeless
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”
St Luke’s Primary!
21st Century School!
Performance!
‘Standard’ 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?
High 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
Monitoring & Support!
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 performance!
120 kWh
310 kWh
189 kWh
120 kWh
15 kWh
105 kWh
Primary energy Thermal Heating
Measured performance!
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
Measured ‘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
Building fabric U-values of 0.15, windows/doors of 0.8 Airtightness of 0.6 @50 pascals Eliminate thermal bridging
Model the building using PHPP Optimise the orientation, form and fabric Prove thermal energy is below 15 kWh/m2.a Prove primary energy is below 120 kWh/m2.a Confirm within limits of overheating
Undergo the rigorous certification process
Love 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 or off-site ‘allowable solutions’ It encourages integrated design thinking + rigorous discipline It drives simplicity of form, detailing and construction It works! Clients + Users love it!
Optimising the Form!
Oakmeadow Primary School Bushbury Hills Primary School
How deep?!
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
Rational plan!
Ground floor plan: Oakmeadow Primary School
Poetic spaces!
Section: Oakmeadow Primary
Design Out TBs!
Structural slab Lo
ad
Insulation
Insu
latio
n
Structural slab Lo
ad
Insulation
Insu
latio
n
Model + Test!
Structural slab Lo
ad
Insulation
Insu
latio
n
Structural slab Lo
ad
Insulation
Insu
latio
n
Keep Structure In!
…Or Out!
Design In Airtightness!
By simplifying every detail
Optimise SG & Vent’n!
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
Design Quality!
No compromise of brief, client aspiration, architectural quality or sustainable materials palette
Client Outcomes!“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
Delivered 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
Breathe easy!
What about Acoustics?! Good acoustics are important Cellular designs easily comply BUT…
Acoustics! Not all teaching needs to be enclosed Open plan spaces offer different educational and social experiences Open plan spaces can enhance daylight and ventilation
Designing hub spaces! Suitable activities More absorption Better absorption Factor in absorption of cloaks etc.
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
NURSERY
TOILETS���
RECEPTION
TOILETS���
B
SHOWER TROLLEY Nom. 1950 x 750mm
A B
C
A
C
KEY
TEACHING AREAS
STAFF AREAS
AUXILLARY AREAS
STORAGE
MULTI-USE AREAS
COMMUNITY FACILITIES
CIRCULATION
NURSERY79.3m!
RECEPTION�����
PE. STORE���
STAGE/
SPECIAL
STORE9.8�
CENTRAL
STOCK
ROOM���
ACC.
TOILET���
ACC.
TOILET��� REPRO.
����
COMMU.
STORE���
SPEC.
STORE4.5�
COMMUNITY
ROOM����� YEAR 3
���� YEAR 4�����
YEAR 5�����
YEAR 6�����
KITCHEN
����� SERVERY/
CHAIR
STORE��
INTERVIEW
ROOM8.3�
GROUP ROOM
SENco��� HYGIENE
ROOM
�����
MAIN
HALL���
YEAR 1����
YEAR 2����
KS2
BOYS
TOILETS9.1�
KS2
GIRLS
TOILETS9.1�
SPECIAL
STORE12.5�
GROUP
ROOM�����
KS1
BOYS
TOILETS����
KS1
GIRLS
TOILETS����
SOFT
READING
AREA
LIBRARY
AREA
ICT
AREAPRACTICAL
AREA
FOOD
TECHNOLOGY
READING
AREA
OFFICE
DRY
STORE
TOILET
LOBBY
LOCKERS LOCKERS LOCKERS LOCKERS
LOCKERS LOCKERS
LO
CK
ERS
STAFFROOM�����
FOOD PREP
STO.
1.1�
GENERAL
OFFICE�����
SEN
THERAPY/
MI ROOM�����
HEAD
OFFICE/
MEETING
ROOM���
MAIN
RECEPTION/
WAITING AREA18.1�
Poss
ible
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
How about the cost?!
Comparative Costs! Capita Symonds ‘typical sustainable school’ St Luke’s 2009 BREEAM Excellent Oakmeadow Passivhaus School
£2,151/sqm
£2,080/sqm
£1,780/sqm
Building services costs! Capita Symonds ‘typical sustainable school’ St Luke’s 2009 BREEAM Excellent Oakmeadow Passivhaus School + Reduced M&E = Reduced maintenance costs
£454/sqm
£357/sqm
£323/sqm
Conclusion!
Sustainable Schools!Design elegance = less costs More design time = efficient construction Right standard + evidence based = high performance
This Doesn’t Work!
This Does Work!
Progress?!Base design on the evidence of what actually works
Strive for simplicity of design to deliver more for less
Image: Albert, Righter and Tittman Architects
www.architype.co.uk