The Levels of BIM Explained

November 11, 2016

This post provides a quick-reference list of the BIM maturity levels and what they mean.

BIM is a rapidly developing field, and there is no real definition of what it is and what it is not. However, a convention has built up to categorise BIM under various levels, and the movement from one level of BIM to another is referred to as BIM maturity.

The BIM Maturity model starts at Level 0 and moves up to Level 3. The majority of BIM usage at the moment is at Level 0 or Level 1, but the UK Government called for the construction and civil engineering industries to have achieved Level 2 by 2016 for all publicly funded projects.

Level 0: CAD

Method:

Drawings, lines, text

Outcome:

95% produce 2D drawings lacking coordination, increasing costs by 25% through waste and rework.

Features:

  • Unmanaged CAD in 2D
  • Paper or electronic data exchange
  • Not BIM proper

Level 1: 2D/3D BIM

Method:

Models, objects, collaboration

Outcome:

2D/3D spatial coordination based on BS 1192:2007 has the potential to remove error and reduce waste by 50%.

Features:

  • First step towards genuine BIM
  • Use of 3D data to present design
  • Usually an isolated designer
  • Managed CAD in 2D or 3D format
  • Common data environment
  • BS 1192:2007 compliant
  • May include stand-alone finance and cost management packages

Level 2: 3D BIM

Method:

Models, objects, collaboration

Outcome:

2D/3D spatial coordination based on BS 1192:2007 has the potential to remove error and reduce waste by 50%.

Features:

  • Managed 3D format
  • Separate BIM discipline software tools with data attached
  • An 'as-built data drop' (COBie)
  • Information protocols for data sharing
  • May introduce 4D construction sequencing data and/or 5D cost information

Level 3: iBIM

Method:

Integrated, interoperable data

Outcome:

A fully integrated and interoperable BIM(M) has the potential to mitigate risk throughout the process and to increase profit by 2% through a collaborative process.

Features:

  • Fully integrated and collaborative real-time project model
  • Probably facilitated by web or cloud services
  • buildingSMART compliant
  • 6D project life-cycle information
  • Standard libraries of object data

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Tagged: BIM