Information on building information modeling

Information on Building Information Modeling

By: Kyle Miller

Building Information Modeling Definition:

•      We use BIM as a verb or an adjective phrase to describe tools, processes and technologies that are facilitated by digital, machine-readable documentation about a building, its performance, its planning, its construction and later its operation. Therefore BIM describes an activity, not an object. To describe the result of the modeling activity, we use the term ‘building information model’, or more simply ‘building model’ in full.

What Is BIM Movie Clip:

•      What is BIM movie clip

            http://www.youtube.com/watch?v=5Qj9pI5us7o

•      Building Information Modeling (BIM)

            http://www.youtube.com/watch?v=hgyhRk8smkk

•      The ArchiCAD BIM Blues

            http://www.youtube.com/watch?v=XdHSzPyGvtE&feature=g-all-u

Current AEC Business Model:

•      Facility delivery process remains fragmented, and depends on paper-based modes of communication.

•      Errors and omissions in paper documents often cause unanticipated field costs, delays, and eventual lawsuits between the various parties in a project team.

•      These problems cause friction, financial expenses, and delays.

•      Most common problems associated with paper-based communication during the design phase is the considerable time and expense required to generate critical assessment information about a proposed design, including cost estimating, energy-use analysis, structural details, etc. 

Building Models are Characterized by:

•      Building components that are represented with intelligent digital representations (objects) that ‘know’ what they are, and can be associated with computable graphic and data attributes and parametric rules.

•      Components that include data that describes how they behave, as needed for analyses and work processes, e.g., takeoff, specification, and energy analysis.

•      Consistent and non-redundant data such that changes to component data are represented in all views of the component.

•      Coordinated data such that all views of a model are represented in a coordinated way.

“An intelligent simulation of architecture”:

•      To enable us to achieve integrated delivery, this simulation must exhibit six key characteristics. It must be:

•      Digital

•      Spatial (3D)

•      Measurable (quantifiable, dimension-able, and query-able)

•      Comprehensive (encapsulating and communicating design intent, building performance, constructability, and include sequential and financial aspects of means and methods)

•      Accessible (to the entire AEC/ owner team through an interoperable and intuitive interface)

•      Durable (usable through all phases of a facility’s life).

What is not BIM technology:

•      Models that contain 3D data only and no object attributes.

•      Models with no support of behavior.

•      Models that are composed of multiple 2D CAD reference files that must be combined to define the building.

•      Models that allow changes to dimensions in one view that are not automatically reflected in other views.

What are the benefits of BIM?  And What problems does it address?

•      Pre-Construction Benefits to Owner

•      Concept, Feasibility and Design Benefits

•      Increased Building Performance and Quality

•      Design Benefit

•      Earlier and More Accurate Visualization of a Design

•      Automatic Low-Level Corrections When Changes Are Made To Design

•      Generate Accurate and Consistent 2D Drawings at Any Stage of the Design

•      Earlier Collaboration of Multiple Design Disciplines

•      Easily Check against the Design Intent

•      Extract Cost Estimates during the Design Stage

•      Improve Energy Efficiency and Sustainability

•      Construction and Fabrication Benefits

•      Synchronize Design and Construction Planning

•      Discover Design Errors and Omissions before Construction (Clash Detection)

•      React Quickly to Design or Site Problems

•      Use Design Model as Basis for Fabrication Components

•      Better Implementation and Lean Construction Techniques

•      Synchronize Procurement with Design and Construction

•      Post Construction Benefits

•      Better Manage and Operate Facilities

•      Integrate with Facility Operation and Management Systems

Object based parametric modeling

•      The current generation of BIM architectural design tools, include Autodesk Revit Architecture and Structure, Bentley Architecture and its associated set of products, the Graphisoft ArchiCAD family, and Gehry Technology’s Digitial Project as well as fabrication-level BIM tools, such as Tekla Structures, SDS/2, and Structureworks all grew out of the object-based parametric modeling capabilities developed for mechanical system design.

•      BIM Tools for Architectural Design

•      Revit

•      Bentley Systems

•      ArchiCAD

•      Digital Project

•      AutoCAD-based Application

•      Tekla Structures

•      DProfiler