16th November 2011, Chennai, India

BIM and Green Building Design A Total Sustainable Solution Approach

by

Dr.Uma Maheswaran, LEED AP (BD+C), Cert. GMP (Spore), MASHRAE, PhD, MDBA, B.Arch

Vice President Jurong Consultants Pte Ltd, Singapore

Key Challenges faced by Designers in Integrating Sustainable Practices into Design Development Eco Design Delivery Process Needs Integrated thinking

Site Survey, Climate Analysis

Building Massing &

Orientation

Computational

Simulations

Building

Performance

Mandates

Passive Design

Active Systems

Design Tender

Sustainability

Design

Construction

Environmental

Protection

Testing&

Commissioning

Measurement &

Verification

Key Challenges Faced by Designers in Integrating Sustainable Practices into Design Development State of Art Sustainability tools Too many of them and only few use them

Tools

IAQ

Renewable Energy

Climatic Analysis

Facade

Lighting Systems

Energy Modeling

Acoustics

Ventilation / Airflow

Façade Optimization –

Heat gain/loss through façade.

Equipment Selection –

Optimal selection of equipment

Schedules & Operation–

Optimal operational efficiency

Energy Modeling

Tools

Apache Sim

HAP

ESP-r

Energy Plus

Visual

DOE

DOE-2

Key Challenges Faced by Designers in Integrating Sustainable Practices into Design Development State of Art Sustainability tools Too many of them and only few use them

Design tools try and ease out the designing and drawing process in the form of providing visual enhancement.

Architects are not hardcore technical professionals and sustainable practices in the past have been engineer’s domain.

Sustainable design concepts are always developed by researchers who are domain specific experts. Except for a few exceptions.

Key Challenges Faced by Designers in Integrating Sustainable Practices into Design Development Designed by Researchers for the use of practitioners

Role of BIM in Eco-Design Delivery Process

When is it essential to go Green during the design delivery process? Timeliness of Information

Site Survey, Climate Analysis Building Massing & Orientation

Computational Simulations

Building Performance

Mandates

Passive Design

Active Systems Design Tender

Sustainability Design

Construction

Environmental

Protection

Testing&

Commissioning Measurement & Verification

Imp

act

of

Sust

ain

abili

ty o

n P

roje

cts

Conceptual design

Detailed design

Construction

Energy modeling, conducted late in the project, sometimes even at the end of the

construction process

What is intended to help and improve the design becomes a costly, time-consuming

exercise, which findings cannot be implemented anymore

Manage to transfer the decision making and the transparency of sustainable inputs earlier in the project

ARCHITECT’S INPUTS

Early integration in process

Need for an Integrated Solution

SPATIAL PERFORMANCE

VISUAL PERFORMANCE

ENERGY PERFORMANCE

THERMAL PERFORMANCE

ACOUSTIC PERFORMANCE

INDOOR AIR QUALITY

BUILDING INTEGRITY

CLIMATE CONSCIOUS DESIGN

TARGET BASED DESIGN

INNOVATIVE SYSTEMS DESIGN

EFFICIENT PERFORMANCE MANAGEMENT

PEOPLE MANAGEMENT

ENERGY EFFICIENCY

WATER EFFICIENCY

SUSTAINABLE CONSTRUCTION

INDOOR ENVIRONMENT QUALITY

PERFORMANCES MANDATES

GREEN RATING SYSTEM /

GLOBAL SUSTAINABILITY INDICES

BIM tools are the current best solution available for us to integrate the two different thinking minds together by embedding the required information in to a designer’s tool.

BIM provides the opportunity to simplify the technical requirements through embedded programming.

BIM tools like Revit, Bentley BIM and ArchiCAD provide the front end GUI which is friendly to the designers and familiar to them already.

Building Information Modeling Integrated Information Solutions

Integrated Solutions

from Vendors

Hevacomp and TAS

Simulator

Eco designer

from Archicad

Ecotect and Green

Building Studio

Localization

Most tools and softwares are designed for other countries, climates, practices.

Singapore has a particular climate, and has its own codes and standards

Need of localizing the information to suit to the closest the practitioner’s needs

Green mark tool

SunCast: Solar penetration ApacheSim: Colour-coded results

VE-Ware / VE-Pro: EPC ApacheHVAC: Detailed HVAC simulation

ApacheSim: Natural ventilation visualisation

RadianceIES: Glare RadianceIES: Daylighting RadianceIES: Rights to light

RadianceIES: Daylighting VE-Compliance: energy reportage

FlucsDL: Daylighting levels

MicroFlo: Airflow regimes MicroFlo: Temperature contours MicroFlo: Airflow visualisation

A one stop solution to a holistic Green Mark assessment

Users: Engineers (typically) Analysis: HVAC / Renewables Energy / Carbon Detailed daylighting Check: Compliance

Users: Engineers

Users: Energy / Facility Managers

Users: Architects / Engineers Analysis: Energy / Carbon (Constructions) Solar shading Daylighting Check: Compliance

Users: Architects Analysis: Energy / Carbon Shape / Form / Constructions

Solar shading Daylighting Define: Compliance

Users: Planners / Architects Analysis: Energy / Carbon Shape / Form / Constructions

Solar shading Daylighting Define:

Tailored for all stages of Building Design and Operation

Green Mark tool – BIM interoperability

Autodesk Revit

Google SketchUp

Graphisoft ArchiCAD gbXML

Other gbXML

[IES Plug-ins]

IES <VE> ModelIT

IFC’s (under test)

Navigator solution

Sustainability tailored to architects

Common sustainable analysis themes

Each theme is then broken into Navigators guiding the user through the analysis

Specific results for each building project guides the architect through the early stage design decisions (that will provide continuity to the wider design team at later stages of design)

Navigator solution

Sustainability tailored to architects

Report generation ability

Report generation ability

Report generation ability

The key components of the GM tool include: - Energy Modeling - ETTV/RTTV calculation - Daylighting simulation - Artificial lighting design and optimization - MV systems design and optimization - Energy efficient features - Quantify Renewable energy credits - Water savings potential calculations - Validation of thermal comfort credits

Green Mark tool overview

Green Mark Navigators will guide both the experienced and novice user through the workflow to perform a robust, repeatable and quality controlled Green Mark assessment

Green Mark tool overview

Plug- Ins for Sketch-Up and Revit

GMT Green Mark tool

Easy to use – produce results at the touch of a few buttons

Data entry and outputs are managed

Based on real climate data and typical characteristics of buildings and systems

Early stage reportage guides the architect towards solutions that are proven to work in their project’s climate.

Green Mark tool for Architects

Tool tailored for architects

Simplify the process by creating a tool for easy decision making at every step of the project, even (especially) at the conceptual level; a tool for architects with the same precision but with simplicity

Automate and eliminate the time-consuming (ex. repetitive inputs), redundant steps in the process, for the project team as well as for the assessors

Live update of simulation results and Green Mark scores, to grasp the impact at every level of a change on the model: allows a true iterative process for improvement in the design

Advantages to Architects

Reportage: Samples

Report generation : Comprehensible

How does it ease Energy Modeling?

IN B

UILT

FRO

M R

EVIT O

R O

THER

PLATFO

RM

S

Way forward

Integrate more and more information interoperability between BIM tools used by architects and software

The ultimate goal is to fully integrate it as a plug-in able directly from the BIM tool to perform the required analysis

Completely eliminate any redundant input; move from geometrical parameters to all data

Green Mark Tool

A sneak preview…

THANK YOU