2014-10+Tongji+MOOC

14
MANUFACTURING
CONSTRUCTION
Laborious & Manual Approach
Efficient & Automated Approach
Source: Associated Press
Laborious & Manual Approach
Efficient & Automated Approach
Release paper P4 dwgs & bar bending schedules
Document control delay (1 week)
Iterative process
Release CAD dwg, rebar schedule (*.CSF) in Documentum
Manufacture
Model rebar component (Use digital Prototyping tool)
Issue and resolve TQ’s (Technical Queries)
Site assembly
Timeline:
Preliminary drafting 2 weeks
Back drafting 1 week
PER CENT PER ANUNM
•
•
The Focus should be on Value Added Growth
Source: Singapore’s Productivity Performance of Economics Division Ministry of Trade and Industry
Source: /workers_stadium
Source: Tekla, Tokyo Sky Tree
16
The Many Facets and Applications of Strategic Innovation 3D Visualization (Customer Communication/Mockup/Urban Study) 3D “Clash Detection” and Coordination 3D Production (Drawings and Fabrications)
Investment
$
$
$
$$$$$$$$$$$
$ / time
$
$
Investment
$$$
$$$
$$$
Sustainability Emergency
vs.
Value
Happiness
Sickness
Measuring Productivity Trends of Labor vs. Computer Wage
Rebar factory starts bending
Ship to site
Assembly
Use model to develop and communicate methods
Check and coordinate detail drawings
Comment on spec
Pre-assembly
» Automated Cost Estimating and Scheduling » Life-Cycle Cost Analysis
22
Different applications require specific “bridges” and interpretations of 3D geometry. How should we construct and share a product model?
» Object-Oriented Product Modeling » 4D Modeling » Industry Foundation Classes
» Virtual Reality—CAVE
» Thermal Comfort and Energy Simulation » CFD Analysis » Lighting Simulation
Virtual Design & Construction An Introduction
2014/10/10
1
What is Virtual Design & Construction?
2014/10/10
2
Virtual Design and Construction (VDC)
Client/Business Objectives Project Objectives BIM+ ICE
Source: Stanford-CIFE
12
Singapore: Construction Productivity
Singapore’s GDP and Productivity Growth Sectoral Productivity Growth
(3-Year Moving Average)
Why Virtual Design & Construction?
2014/10/10
6
Building Professionals

Building Professionals

Draft spec
Update spec
Release spec
Preliminary design
GA drawings
Preliminary RC detailing
Refine RC details and concept for buildability/ detailing
Prepare RC detail drawings (drafting)
Cost Estimate & Value Engr. 3D+Time Visualization Life-Cycle Cost/Environmental Impact
10 12 14 16 18 20 22 24
4 6 Scanning 8 10 12 14 16 18 20 22 24 3D2 Laser
-10
Hour of the day (Cases: 1. Base case & 2. Case 2, Better Solar Shielding) People Window (cond. + rad.)
empowered by
BIM & VDC

< Age 20
Age 21 - 30
Age 31 - 45
Age 46 - 80
> Age 81
Investment
$
$
$
< Age 20
Age 21 - 30
Age 31 - 45
Age 46 - 80
> Age 81
Process
Current State Process, T5 Rebar Detailing for Construction
Design
Design input/ changes
NOTE: Design changes during detailing (from: architecture, baggage, systems, etc.) are upsetting RC drawing development.
International Adoption of VDC
2014/10/10
19
FINLAND 芬兰
20
Source: www. /
21
Assess state-of-the-art technologies and information standard:
CAD check (1d/dwg)
Check against engineering calcs (.5d /dwg)
Most of the checking process is done concurrently with RC detail development.
Engineering
Detailed engineering design information Consists of: engineering calculations, sketches, etc.
Validation
Automation Simulation Optimization Smart Building
Accuracy, Efficiency
Accuracy, Efficiency Informed Decision Better Informed Decision On-Demand Controls & Access
Independent final check & sign off (2 weeks)
Building control check & sign off (BAA, time?)
BAA building control accepts the opinion of the independent design check - and does not perform a check of its own
NOTE: Drawings are batched into sectionsthen subdivided into building components. Each component is an assembly package, e.g. rail box floor, wall, etc. The number of drawing sheets per building component vary depending on the work. On ART for example, each component may consist of 8-15 GA drawings and 8-15 RC detail drawings. All of the GA drawings are complete pending changes from other design disciplines