architype - green bim uk perspective, ntu taipei, 13 february 2014

Green BIM

UK perspective 13 February 2014, National Taiwan University, Taipei

Elrond Burrell 趙晨瀚 Associate, Architype Ltd elrond.burrell@architype.co.uk

We design

Life Enhancing"Genuinely Sustainable Architecture

Overview 1. The Rise of BIM 2. UK Government + BIM 3. UK Green BIM 4. Architype Green BIM

1. The Rise of BIM

BIM isn’t new!

Why now? 1. Software & Hardware capabilities

3d Modeling Structured Information Digital Collaboration

Why now? 2. Digital / Social Media ‘Tsunami’

Digital everything Social everything … will the construction industry catch up?

2. UK Gov + BIM

EU Directive Energy Performance of Buildings

Buildings consume 40% of energy in EU By 2018 All new public buildings “Nearly Zero-Energy” By 2020 All new buildings “Nearly Zero-Energy”

EU Directive

UK Gov Strategy

UK Gov Strategy

UK Gov Purpose 20% reduction in capital costs 20% reduction in CO2 emissions + reliable outcomes + predictable building (asset) performance

UK Gov BIM “Building Information Modeling (BIM) is the process of generating and managing information about a built asset over its whole life.” Cabinet Office 2012

UK Gov BIM + GSL

BIM Protocols

3. UK Green BIM Aspirations & Reality

Aspirations EPDs linked to Models Model based Green Rating compliance check

The RegBIM project using IFC underway

Reality … ? Model based Embodied Carbon + Lifecycle Analysis

Impact specification / database

www.impactwba.com

Reality … ? Model linked Responsible Sourcing / Environmental Impact data

NBS Create specification tool using Uniclass2

constructioncode.blogspot.co.uk

Reality REM - Rapid Energy Modeling

Energy Carbon Day lighting Water Wind Thermal comfort Renewable energy generation

Caveats

Conceptual design guidance only Not an accurate prediction of actual performance

REM example 1

autodeskvasari.com

REM example 2

www.sefaira.com

Reality Dynamic Simulation Modeling

Thermal modeling Overheating “Conservation of Fuel” regulations compliance

Caveats

Often not an accurate prediction of actual performance Interoperability issues often require re-modeling

DSM example

Reality Material waste reduction

Accurate quantities from model Buildability issues resolved in model

Caveats

Is the model built for this purpose? How accurate? How resolved?

Reality Scan-to-BIM for Refurbishment

~80% of building stock exists already Accurate existing building model Early analysis of cost & carbon effective measures Risk / Cost reduction

Scan-to-BIM example

Scan-to-BIM example

Scan-to-BIM example

Reality In-Use Energy / CO2 emission reductions

Accurate design data Accurate energy modeling tools Greatest climate change impact for new build Robust long term performance Significant cost savings / Best ROI Healthier buildings

4. Architype Green BIM

Passivhaus Standard “…the world’s leading standard in energy efficient design” Rigorous performance standard Quality assurance Optimal comfort (ISO 7730) Minimal energy Climate specific – works anywhere

PHPP “simplified models, precise data” Accurate Open Parametric Instant

Data 4 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 4 Passivhaus Simple + Useful + Productive 1.  Visual interrogation 2.  Accurate Live Numerical Data

Visual Interrogation Design coordination / integration Thermal Continuity Heat Loss Envelope

Design Coordination

Design Coordination

Thermal Continuity

Heat Loss Envelope

Accurate Live Data Treated Floor Area (TFA) Actual Volumes Ventilation Volumes Heat Loss Areas Window / Door Opening Areas

Areas and Volumes

Heat Loss Areas

Opening Areas

Outcomes 2 x 65kW Boilers for a 2200m2 School 25kW peak heat demand = 5x oversized! 90% reduction in gas consumption

Fresh Indoor Air

“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

Oakmeadow Primary

Wilkinson Primary

Chester Balmore

Herefordshire Archive

UK’s Greenest Building University Innovation Centre

www.architype.co.uk