This document provides an overview of Building Information Modeling (BIM). It defines BIM as a digital representation of the physical and functional characteristics of a facility that acts as a shared knowledge resource about a facility during its lifecycle. The document discusses the history and key concepts of BIM, how it is used for off-site applications, its interactive process, benefits including improved coordination and productivity, common BIM software, countries making BIM compulsory, and potential drawbacks such as complexity and cost.

1. AN OVERVIEW OF
BUILDING INFORMATION MODELING – BIM
By: Assist. Prof. A. J. Niazi
Email: dr.ajniazi@gmail.com
Kabul Polytechnic University – KPU
Construction Faculty
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2. Content
• Introduction
• What is BIM
• BIM – History
• Some Key Terms
• BIM – Off-Site Applications
• Interaction and Process
• Benefits of BIM
• BIM – Softwares
• Countries Using BIM
• Drawbacks of BIM
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3. Introduction
• What is Modeling?
• Type of Modeling in Construction & Urban Planning..
• How they works?
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4. What is BIM?
• (BIM) . . . is a digital representation of physical & functional characteristics of a facility.
• (BIM) . . . is a shared knowledge of resources for information about a facility forming a reliable basis
for decisions during its lifecycle
• BIM is an intelligent model-based process that provides insight to help you plan, design, construct,
and manage buildings and infrastructure. – Autodesk
• Building Information Modeling (BIM) is the process of generating and managing building data during
its life
• cycle. BIM uses three-dimensional, real-time, dynamic building modeling software to increase
productivity in building design and construction.
• To create a BIM, a modeler uses intelligent objects (Families) to build the model.
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5. BIM is an interoperable database
• Multiple models interoperate
• – Architectural model
• – Structural model
• – HVAC model
• – Piping model
• – Telecommunications model
• – Electrical model
• – Furniture model
• – Civil model
• – Construction model
• – Fabrication model
• – Facility management model
• – etc.
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6. • Models can interoperate with analysis and other specialty tools
– Rendering, 3D Printing
– Scheduling
– Estimating, Procurement
– Engineering Design
– Animation, Simulation (construction, energy consumption, etc)
– Laser Scanning and Underground Radar
– Facility Management
It is all about the Information …
• Graphical Information
– 3D Objects Visual in the Model – Architecture, Structure, Ductwor k, Piping & Equipment
• Non-Graphical Information
– Performance Data
• Linked Information
– Schedule & Cost Information
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7. BIM – History
• Charles M. Eastman. Is a pioneer in CAD and developed early research on BIM.
• In the mid-1970s, he focused on the development for practitioners with the ‘Building Description
System’ and ‘Building Product Modeling’ (which was later renamed into ‘Building Information
Modeling’ – BIM).
• Author of BIM Handbook: A Guide to Building Information Modeling for Owners,
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8. Drawing based process
vs.
BIM process
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9. Some Key Terms
• BIM – Dimensions in Construction
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10. BIM – Off-Site Applications
 BIM is mainly used in offices of Construction & Design companies.
 There are 5 main purposes when working with BIM:
 Gather – Collect & organize Information
 Generate – Create & design with the information gathered
 Analyze – Review the design and it properties
 Communicate – Present & document the design & information
 Realize – Follow through with the design & implement it in the construction phase
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11. • BIM can be used to facilitate a virtual walkthrough while on a construction site –
through the use of BIM “apps”. Most common BIM apps are listed below:
 Graphisoft BIMx
 Telka BIMSight Mobile
 Navigator Pano Review
 Autodesk 360 Mobile
 Revizto Viewer
 BIManywhere
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12. Interaction
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14. Benefits of BIM
• • Improved quality of the construction drawings (CDs).
• • Reduced time to prepare the initial drawings and final
• CDs.
• • Quantities and shared properties of materials are
easily
• extracted for cost estimating.
• BIM programs & practices are not only used
• to help with communication and visual
• understandings of a project, but also have a
• great impact on accelerating productivity and
• achieving a higher project turnover rate.
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15. • Site Logistics
• Utilize 3D models to identify Site logistics and communicate phasing
• Valuable for managing expectations early in the process
• Structural BIM:
• Incorporate detailed design into model to eliminate need for
separate shop drawing process
• Enables complex construction
• Visualization:
• 3D Coordination:
• Field Coordination:
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17. BIM – Productivity Rates:
 75% of BIM users reported better multi-party communication.
 57% of Designers state BIM reduces errors during the design phase.
 Average project duration reduced by 37%.
 65% of contractors report BIM reduces rework and cost overruns.
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18. BIM – Softwares
3D Modeling Software - Revit
Architecture 2011
Features. (Autodesk Revit, 2016).
4D Project Scheduling Software, Autodesk
Navisworks. (Autodesk Navisworks, 2016).
5D Estimating Software - PlanSwift.
(Planswift, 2016).
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20. Prototype Revit Model
• Architectural
• Structural
• Mechanical
• Electrical
• Plumbing
• Automotive
• Drawing Updating
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21. Countries making BIM compulsory
for big projects/government projects
• USA
• United Kingdom
• Norway
• Denmark
• Finland
• Hong Kong
• South Korea
• Netherlands
• India
• Japan
• China …. And …
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22. Drawbacks of BIM
• Complexity of software used for BIM
• Cost of software
• Lack of BIM knowledge in every place
• The computer system running these software needs high end specifications
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