bim & sustainability
TRANSCRIPT
BIM & Sustainability
University of Salford - MSc BIM & Integrated Design: Summer School18 May 2016
Elrond Burrell, Architype Ltd
@elrondburrell | @ArchitypeUK
We design Life Enhancing Genuinely Sustainable Architecture
“Essentially, all models are wrong, but some are useful.”– George E. P. Box
“Software doesn’t design sustainable buildings, people do.”– Elrond Burrell
Caveats
A UK based Architect’s perspective
BIM tools our teams use:– Vasari, Revit, Ecotect, IES, PHPP
Sustainable Design is a HUGE topic
Overview1. Sustainable Design?
2. BIM for SD decision making
3. BIM for SD compliance (BREEAM)
4. BIM for SD performance (Passivhaus)
1. Sustainable Design?
Brundtland Commission - Sustainable development?• What the earth can sustain
Sustain & nourish people and planet?• ‘Sustainable’ and delightful, healthy, affordable . . .
Climate Change
Image: www.scotland.gov.uk
Reducing CO2 Emissions
Energy Efficiency + Renewable Energy
EU EPB Directive 2010Maintain the global temp rise below 2°C
Buildings account for 40% consumption
“near zero energy” buildings required– all public buildings by 2018– all buildings by 2020
Wider Sustainable DesignEnergy / CO2 in useEnergy / CO2 embodiedWaterMaterialsWastePollutionHealth & WellbeingSite ecology
BIM for what?
Decision making
Rating compliance
Building Performance
How?
3d visual informationNumerical informationData linking / transferREM – Rapid Energy ModellingAnalysisCloud computing
2. BIM & Decision making
Placement
AdjacenciesOvershadowingSolar access
Key BIM advantages– 3d visual information, REM
Image: www.david-miller.co.uk
Orientation
Solar GainViewsPrevailing winds
Key BIM advantages– 3d visual information, REM
Massing & FormHeatlossOptimisationBuildability / Waste
Key BIM advantages– 3d visual information, REM, Analysis
Image: www.passivhaustrust.org.uk
Image: www.eurobuilduk.co.uk
Planning for Renewables
OrientationAvailable space / Visual impactOvershadowing / Shading
Key BIM advantages– 3d visual information
Fenestration Placement
OrientationHeat loss / gainInsolation
Key BIM advantages– 3d visual information, REM
Image: www.la2030studio.net
Daylight
OptimisationGlazing sizing / placement / specBalancing against heat loss / gain
Key BIM advantages– REM, Data linking / transfer, Analysis
REM
Heating, Cooling & Building ServicesEnergy Efficiency & CO2 emissionsWater, Wind, Thermal Comfort
Key BIM advantages– 3d visual information, Cloud computing
REM
LOD: remember Box?
REM ≠ Analysis
Image: www.sefaira.com
Image: www.vasari.com
Image: www.graphisoft.com
Image: www.designph.org
Waste ReductionPrefabrication / ComponentisationMaterial optimisationBuildability
Key BIM advantages– 3d visual information, Numerical information
Embodied CO2 / LCA
Material selectionCarbon / Environmental impactWhole life costs
Key BIM advantages– Numerical information, Data linking / transfer
Image: www.impactwba.com
Image: www.kierantimberlake.com
Responsible Sourcing
Material selectionEnvironmental ImpactSocial impact
Key BIM advantages– Data linking / transfer
Image: www.constructioncode.blogspot.co.uk
Energy + Carbon + CostREM with a broader contextOptioneeringWhole life optimisationCost / value analysis of sustainable designs
Key BIM advantages– Data linking / transfer, REM, Analysis, Cloud
computing,
Image: rapiere.net Declaration: Architype are one of the founding partners of Rapiere
More…
Refurbishment / RetrofittingWaterBiodiversityTransportEPDs…
Parametric SDForm findingFaçade designSD aesthetic
Key BIM advantages– 3d visual information, Numerical information,
Data linking / transfer, REM
Image: www.architizer.com Architect: www.qlabdesign.com/
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Architect / Image: www.a2m.be
3. BIM for SD Compliance
Ratings schemesBuilding Regulations / Codes
BREEAM / Code for Sustainable HomesLEEDGreen Star / Home Star
… and more
BIM approachesNative BIM checking
Semi-native BIM checking– Export IFC or gbXML for analysis
Rule based checking tools– Export IFC and apply custom rules
Native BIM
Image: www.inthefold.autodesk.com
Semi-native
Visual check / evidence within model
Generate data for credits
Generate data to export for analysis
Visual Check / Evidence
Man 7 Shared Facilities One credit may be awarded where evidence provided demonstrates that shared facilities have been provided as a consequence of consultation feedback.
Two credits may be awarded where, in addition to the above, evidence provided demonstrates that these facilities can be accessed without compromising the safety and security of the building and its occupants.
Generate data for credits
Mat 1 Materials Specification – Major Building Elements
Up to six credits may be awarded where evidence provided demonstrates that the major building elements specified have either an ‘A+, A or B rating’, as defined in the Green Guide to Specification.
Generate data for analysis
Hea 1 DaylightingOne credit may be awarded where evidence demonstrates that at least 80% of floor area in each occupied space complies with the following:
• An average daylight factor of at least 2%; AND
• A uniformity ratio of at least 0.4 or a minimum point daylight factor of at least 0.8% (spaces with glazed roofs, such as atria, must achieve a uniformity ratio of at least 0.7 or a minimum point daylight factor of at least 1.4%).
Image: www.iesve.com
More...LEED Calculations with BIM– Recorded at the April 2012 monthly meeting of
the NYC Revit Users Group, this video features Amy Patel, LEED AP from HOK's buildingSMART team. She shares an overview of the LEED process, sustainable design credits, which ones can be calculated in a BIM platform and how to do it.
http://youtu.be/VitRNZxF5qw
Rule based checking tools
Image: www.aecmag.com Software: www.solibri.com
www.regbim.engineering.cf.ac.uk
4. BIM for SD Performance
Certification schemesLiving Building Challenge
Minergie
AECB CarbonLite
Passivhaus (Passive House)
Passivhaus Standard“…the world’s leading standard in energy efficient design”
Rigorous performance standardQuality assuranceOptimal comfort (ISO 7730)Minimal energyClimate specific – works anywhere
PHPP: BIM or BEM?
“simplified models, precise data”
AccurateOpenParametricInstant
Data for QA
Passivhaus can be seen as a quality assurance standard that ensure that the right information is used at the right point in the process to deliver reliable robust energy performance & comfort.
BIM + Passivhaus
Process+
Information+
Model and test
Not box ticking
Not sexy graphics
Not on site
BIM for Passivhaus
Simple + Useful + Productive
1. Visual interrogation
2. Accurate Live Numerical Data
Visual Interrogation
Design coordination / integrationThermal ContinuityHeat Loss Envelope
Design Coordination
Design Coordination
Thermal Continuity
Thermal Bridges
Heat Loss Envelope
Accurate Live Data
Treated Floor Area (TFA)Actual VolumesVentilation VolumesHeat Loss AreasWindow / Door Opening Areas
Areas and Volumes
Heat Loss Areas
Opening Areas
What does this deliver?
CO2 concentrations typical winter day
Breathe easy!
“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 ... learning has been enhanced”
Sara Morris, Head Teacher
Client Satisfaction
Bushbury Hills Primary
Wilkinson Primary School
UEA Enterprise Centre
Conclusion
BIM enabled SDSimplified + Integrated?
Image: Albert, Righter and Tittman Architects
“Essentially, all models are wrong, but some are useful.”– George E. P. Box
“Software doesn’t design sustainable buildings, people do.”– Elrond Burrell
www.architype.co.uk