Low Energy Design – Sarah Graham (Greenbuild Expo, June 2011)

Greenbuild Expo 2011
Low Energy Design

30th June 2011

Dr Sarah Graham
B Eng, C Eng MCIBSE, Eng D
UK Sales Manager
T: +44 141 945 8500
C: +44 7837 251354
Sarah.graham@iesve.com
www.iesve.com

Integrated Environmental Solutions Ltd
Founded June 1994
Head Office in Glasgow, Scotland

offices: Dublin, Melbourne, India, Boston and San Francisco
IES representation in UK, Europe, US, Canada, Malaysia, Middle East.
software in over 140 countries; international reseller network
International sustainability consultancy from IES Consultancy Services
International software training via Authorized IES Trainers

Offices Consultants Resellers

© Integrated Environmental Solutions Ltd.

Overview

Synopsis – Use of software in low carbon design process
• The problem - issues that designers face when pursuing low carbon design.

• The solution - vision of what the solution could be.

• Current Situation – What can be done now?

• Roadmap – what steps need to be taken to move towards the vision.


The problem
• Increasing Scope/Decreasing Fees

Fees

Scope

The problem

glazing orientation form

The solution - Collaboration

Building
Owner f

Architecture Contractor

Civil Mechanical
BIM f Integrated Design
Engineering Engineer
Process

Facilities Electrical
Manager Engineer

Construction
Manager

Conventional design process

Building design process

Master Concept Schematic Detailed Completion In use
Planning Design Design Design

Planners, client body,
community members

Architect , client,
cost consultant

Mainly architect , structural
engineer & client Mechanical, electrical,
& plumbing

Contractors,
construction manager,
commissioning Users
authority, cost estimator
A linear design
process
Analysis


Conventional design process

Project start

Concept Design

Schematic Design

Detailed Design

Effort
Tender documentation

Consultation
& Engagement

Schematic Detailed Construction Construction
Design Design Documentation
Construction

Time
completion


Integrated design process
Predictive/incentive
modelling
Compliance
modelling Completion

A multi-disciplinary design team

process •Landscape architect
•Ecologist
•Architect
•Energy specialist
•Structural engineering
•Civil engineering
design

A multi- •Mechanical engineer
disciplinary •Electrical engineer
design team •Plumbing engineer
•Other specialists(fire, acoustics,
daylighting, controls, etc.)
•Facility manager
•Contractor
Building •Construction manager
Building •Cost estimator

Concept design

Conceptual
modelling

Integrated design process

Key elements of integrated design process process
Building design

• Multi-disciplinary collaboration between architects,
engineers, contractors, cost specialists, facility managers
right from the beginning of the design process

• Discussion of the various important performance issues

Effort
and the establishment of a consensus on this matter
between client and designers
Traditional
• Budget restrictions applied at the whole building level,
with no strict separation of budgets for individual building
systems.

• The addition of subject specialists involved (e.g. energy
Schematic Detailed Constructions Constructions
simulation, daylighting, comfort, acoustics) Design Design Documents

• Testing of various design assumptions through the use of Time
performance analysis throughout the whole process to
provide relatively objective information on this key aspect
of performance

• Clear articulation of performance targets and strategies,
to be updated throughout the process by the design
team


Building Information Modelling

Architectural
Structural
Model
Model

Electrical • Graphical information
Model -3D objects visual in the model

Mechanical
Model BIM
Composite (linked with phasing,
• Non-graphical information
Model sequencing,
Plumbing - Performance data
construction schedule)
Model

Energy Model

Other Model • Linked information
- Schedule & cost information
Compliance
Model Cost Model


BIM vs BPM



Building
Information Building
Model Performance
Model



Climate Brief consequences Baseline solution Brief refinement Certification
Locality Building type Baseline outcomes Detail definitions Energy in use
Site features Climate & bldg type Footprint Systems Re-certification
Nat resources Building form Scheme directions HVAC Controls
Urban form Footprint headlines Building solar Air flows Re-furbish & improve
Urban solar Headline design Building light Building detail feature
directions design
Urban light Renewable directions
Headline sustainability Loads – steady state
Visualise Sustainability
directions
directions Energy – dynamic
Visualise
Basic loads Plant size
Compliance directions Optimisation
Visualise Energy compliance
Sustainability
compliance
Certification
CFD etc studies
Visualise


Integrated approach to project delivery

Project location: Glasgow
Master
planning

What if climate
change?

2050?

<Virtual
© Integrated Environmental Solutions Ltd. Environment>
model of the


Concept
design

Sketch model

VE model

VE models with different glazing percentage



Schematic
design

VE model
with 20%
glazing Suncast

Radiance

Apache System

EPC

Thermal result MacroFlo


Detailed
design

Suncast

CFD
Simulex Radiance

HVAC EPC Cost Plan


Real vs Actual Building

Notional Building Actual Building Real Building

Target CO2 Actual CO2

TER DER/BER

Comparison Tool

Compliance


IDP Technology - Vision


IDP Technology - Reality

• Model input Building design process
− Design for sustainability using same tool regardless of BIM/CAD platform

Google SketchUp Graphisoft ArchiCAD gbXML

Other gbXML

[IES Plug-ins]
Autodesk Revit

IES <VE> ModelIT


How it works:

gbXML
1. Draw Geometry in Autodesk Revit

2. From the Revit Toolbar:
• Set Building Location
• Define Building Parameters:
• Building Type
• Construction Materials
• Building System Types
• Room Types

<VE>
3. Launch IES VE-Toolkits/VE-Pro

4. Choose Analysis Type

Next Steps

• Raising awareness about the strengths and weaknesses of the current situation
with respect to Interoperability.

• Continue to improve the Interoperability and start to look at the ‘round-trip’
whereby we take information back into the BIM package from the analysis
package.

• Automation of parts of the process – automatic updating and re-calculation when
something changes.

• Cloud computing

• Key documents
• IGT ‘Low Carbon Construction’ report
• Cabinet Office ‘Government Construction Strategy’
• ‘BIM Working Party Strategy Paper’


Thank you …

Questions?

Sarah.graham@iesve.com


Low Energy Design – Sarah Graham (Greenbuild Expo, June 2011)

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