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.