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.
Study on Air-Water & Water-Water Heat Exchange in a Finned Tube Exchanger
An overview of of bim by assist. prof. a. j. niazi
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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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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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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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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