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An overview on the main issues of the building industry and how the disruptive trend of Building Information Modeling (BIM) is changing the way buildings are designed and approached in general. BIM models and energy simulations were showcased. Conference: Building Green 2013, Athens, GR
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GREEN BIM
SUSTAINABILITY THROUGH INTEGRATION
Dimitrios Farmakis, BIM Consultant
MS Civil & Environmental Engineering,
Stanford University
AGENDA
17.00 – 17.20: Building Information Modeling (BIM)
– an Overview
17.25 – 17.30: Applications in a/e/c
17.35 – 18.20: Green BIM – workflow showcase
18.20 – 18.30: Q&A
THE PROBLEM…
PROBLEM(S) IN A/E/C
Conceptual Schematic Development Drawings
Construction
& Operation
: ARCHITECTURE
: ENERGY
: MEP
: STRUCTURAL
V.E : Value Engineering
: Scope reduction
V.E
PROBLEM I:
… INFORMATION RECREATION
… DECISION LATENCY
… COST
… RISK
40%
60%
Global Energy Use
Buildings
Other53%
47%
CONSTRUCTION &
DEMOLITION
32%
68%
Global CO2 emissions
Buildings
Other
PROBLEM II:
... ENERGY IN BUILDINGS
… ENVIRONMENT
… COST
INTEGRATION
COLLABORATION
TRANSPARENCY INFORMATION
PEOPLE
PROCESS
ACCESS
SO…
WHAT IS BIM?
Conceptual Schematic Development Drawings
Construction
& Operation
V.E V.E V.E V.E
: ARCHITECTURE
: ENERGY
: MEP
: STRUCTURAL
V.E : Value Engineering
: OPTIMIZATION
P R O C E S S
Traditional versus BIM/IPD workflows relative to design effort and cost of change over a
project timeline
Source: Building Information Modeling: A Strategic Implementation Guide for Architects, Engineers, Constructors,
and Real Estate Asset Managers, p 104.
Design/
Effort
Phases of Building Cycle
Pre-design Schematic
design
Design
Development
Construction
Documentation
Procure Construction
Administration
Operation
Plan Bid Build Operate
1. Ability to impact cost
2. Cost of design changes
3. Traditional design
process
4. Preferred design
process
How Integrated Design & analysis Decreases Costs
APPLICATIONS I:
ARCHITECTURE
APPLICATIONS II:
ENERGY
APPLICATIONS III:
OTHER DISCIPLINES
BIM
Detailed
Design
Analysis Documentation
Construction
Analysis
Construction
Logistics
Operation &
Maintenance
Renovation
Conceptual
Design
green
Pre-design Conceptual
design Simulate Visualize
• Surrounding
Environment
• Location &
Climate data
• Goals
• Sun settings
• Energy
Settings
• Analyze
• Results
• “Problematic
” Areas
• Strategies
• Basic
Geometry
• Mass
model(s)
• Orientation
Design changes
Feedback
Basic Workflow
sustainable buildings
are designed by People
… not software
Good looking model ≠
useful information…
G.I.G.O. – garbage in
garbage out...
“essentially all models are
wrong… but some are useful”
- george e.p. box