Date post: | 16-Jul-2015 |
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Engineering |
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Building Information Modelling(BIM)
Syed Nematulla Quadri
3KB11CV060
B.E. Civil Engineering (8th semester)
K.B.N. College of Engineering, Gulbarga
Under the guidance of
Prof. Md. Faisaluddin
Contents
• What is BIM?
• What is 3D, 4D, 5D, 6D and 7D in BIM?
• Software used in BIM
• Benefits of BIM
• Industry Foundation Class
• BIM cloud
• BIM maturity wedge diagram
• BIM in India and abroad
• Drawbacks of BIM
What is BIM?
BIM is an intelligent model-based process that provides insight to help you plan,
design, construct, and manage buildings and infrastructure. – Autodesk
Who can take advantage of BIM
What is 3D, 4D, 5D, 6D and 7D in BIM?
Problems faced when BIM is not used
• Flow of data
• Improper schedule of work
• Cost estimate is tedious and not accurate
• Digitalization of data is less
• Clash detection becomes very difficult to notice
• Reinforcement details in junctions
• Energy analysis
3D Software used in BIM
Design analysis software used in BIM
Scheduling software used in BIM
Estimation software used in BIM
Non – BIM software
Interaction among the AEC professionals due to BIM without any conflict
Industry Foundation Classes (IFC)
BIM Cloud
Drawing based process vs. BIM process
CAD vs. BIM
Task CAD
(hours)
BIM
(hours)
Hours saved Time savings
Schematic 190 90 100 53%
Design development 436 220 216 50%
Construction
documents
1023 815 208 20%
Checking and
coordination
175 16 159 91%
Totals: 1824 1141 683
(Rick Rundel (7),2007)
Countries making BIM compulsory for big projects/government projects
• United Kingdom
• Norway
• Denmark
• Finland
• Hong Kong
• South Korea
• Netherlands
BIM maturity wedge diagram
BIM in India
None
Allplan
ArchiCAD
Microstation
Revit
VectorWorks Architect
40%
5%
6%
0%
49%
0%
BIM Application used in India
Anti-Drafting
Better Design
Faster Documents
Virtualization
Democratization
Visualization
30%
65%
53%
56%
26%
74%
Aspect of BIM that appeals
the most
(Lachmi Khemlani, 2007 (3))
Don't know about BIM
Interested but not adopted BIM
Interested and planning to adopt BIM
Testing BIM
Actively utilizing BIM
Exclusively using BIM
15%
23%
15%
15%
9%
23%
Firm Leaders interested
towards BIM
Save costs
Clients demand
Energy analysis purpose
Better design tool
Competative advantage
19%
14%
12%
44%
12%
Reasons for the interest
towards BIM
(Lachmi Khemlani, 2007 (3))
Software too Expensive
24%
No technical Expertise
28%
Owners not requested
24%
Not familier with the
technology
24%
Reasons for not using BIM in India
(Lachmi Khemlani, 2007 (3))
Drawbacks of BIM
• Complexity of software used for BIM
• Cost of software
• Lack of BIM knowledge in India
• BIM course is only available abroad
• The computer system running these software needs high end specifications
Conclusion
• BIM is promising and more advantageous compared to the traditional process, but still it has several setbacks as the technology is still in primitive stage.
• A significant amount of development is to be done in information flow and interoperability of the software.
• Additional training material is to be provided with software to learn the complicated features.
• In India, universities should start teaching BIM as an academic course to make the people perfect in this field.