Some Facts about BIM……..

BIM is a well-known slogan in AEC. BIM is a building design and documentation process. It enables you to create & mange information about a building project before its construct. The information about the building project is stored in a single model. This ensures that the information is coordinated, consistent and complete.

Lets discus about some facts about BIM:

     1.    What is BIM?

     2.    What BIM is not?

3.    Difference between 2D and BIM

What is BIM?

Building information modeling (BIM) is the process of generating and managing building data during its life cycle.

 The National Information Model Standard Project Committee defines BIM as

“Building Information Modeling (BIM) is a digital representation of physical and functional characteristics of a facility. A BIM is a shared knowledge resource for information about a facility forming a reliable basis for decision during its life cycle; defines as existing from earliest conception to demolition”

What BIM is not?

BIM is not CAD. BIM was never meant to be CAD. CAD is a replacement for pen and paper, a documentation tool. By comparison, BIM processes are design applications in which the documentation flows from and is a derivative of the process, from schematic design to construction to facility management until demolition.

 BIM doesn't design buildings. Architects and engineers design buildings. BIM tools merely assist them in doing so. There is no magic "Design" button.

 Difference between 2D and BIM

 The following table looks at many of the common tasks of the construction process and compares the traditional 2D method versus the BIM Process:

Discipline	2D Based Process	BIM Process
Design	Linear, Phased	Concurrent, Iterative
Drawings	Paper 2D	Digital 3D Object based tied to intelligent data
Value Engineering Alternatives	Evaluated over days in 2D	Evaluated in 3D instantly
Site Planning	Unclear Elevations	Relief Contours
Code Review	Slow and Detailed	Expedited and Automated
Design Validation	Light Tables	Clash Detection with Audit Trails
Field Drawings	2D Drawings	2D Drawings and Perspectives
Closeout Documents	Assembled near completion	Intelligent models for operations and maintenance instructions; Constantly updated during construction
Scheduling	Stand Alone Activities	Activities linked to Models
Sequence Planning	Limited Scenarios evaluated	Extensive Scenarios Evaluated earlier in the process
Field Coordination	Paper Shop Drawings	Overlaying Digital Models using collision detection software
Operation Training	Use manuals	Visual

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