Bui ld ing Information Model l ing (BIM)

 BIM is an intelligent model-based process that supports the execution of planning, designing, constructing, and managing buildings and infrastructure projects.

The model serves as a shared knowledge base, and source of information about a built asset, forming a reliable basis for decision making during its lifecycle from inception onwards.

BIM generates value from the combined efforts of people, process and technology.

The BIM processes is a sharing workflow between the different layers of

stakeholders involved and it is only fully achieved engineering to enable

collaboration and communication.

Concept to Execut ion and BeyondBIM in the Project L i fecycle

The Architect - Interprets the client vision and creates

MEP + Structural - Bring the buildings to life focus on the design (including schematic and detailed Design) MEP Engineers design the spaces for the Mechanical, electrical and public health systems. Structural engineers create conceptual designs and ensure that the structure can be built and is stable and durable.

Contractor: - Execute the designs

Concept - The project design team come together. The Architect will begin building the design model in Revit Architecture. At an agreed upon time, the Architect will send his model to the Structural and MEP Engineers.

Accuracy at this point is vital to make the process more predictable and avoid any costly redesign works.Collaboration between the architect and engineers enabling better decision making, improved quality and less risk.

Each discipline will link the architecture model into their own work space within the discipline version of Revit of their choice (i.e.Revit MEP or Revit Structure). Telling their own discipline versions of Revit to connect to the model that the architect sent and show it graphically within the same space.

Once linked in, each discipline will begin their own work inserting, for the Structural Engineers, beams, trusses and columns and, for MEP Engineers, ducts, pipes and electrical connections. Next the engineers will send their individual models back to the Architect s

This will then be looked over once again by the architect with further amendments if necessary this process is repeated until all design parties/owner are happy and then this is passed on to the contractor to execute

ConstructionDue to careful early planning team members are able to use less materials therefore creating less cost and less operational revenue lost. Construct can be

completed on schedule and in budget.

FM/Operation and Maintenance can enjoy better quality assurance on their completed project and are provided with a complete virtual inventory of their building for operational and

renovation purposes.

B I M   S o ft w a r e• The most commonly used BIM software is Autodesk Revit which have three versions that covers

the major disciplines (Architecture, Structure and MEP). It can be used by the Architects, Structural and MEP designers/contractors.

• Being able to use IT software to illustrate a project lifecycle gives a more sustainable and effective business method than traditional pen to paper

• Revit uses geometry (Geometry is the visual study of shapes, sizes, patterns, and positions) to help form the 3D model

BIM includes software such as Ecotect and Green Building Studio to detail the efficiency of the design with regards to the environmental impact on it and its impact of the environment

B I M C a t e g o r i e s• 3D – Three-dimensional is based in computer-generated representations. 3D modelling typically

refers to data-rich Model Components generated through one of many BIM Software Tools. The 3D also allow mains other BIM uses (e.g., 3D Coordination, Design Reviews, Mechanical Analyses, etc.).

• 4D - The fourth dimension refers to 3D + time. A model or a modelling workflow is considered to be 4D when the time is added to model objects to allow Construction Scheduling and simulation.

• 5D - The fifth modelling dimension (5D) refers to 4D + cost. That is, a model (or modelling workflow) is considered to be 5D when cost is linked/embedded within BIM models and Model Components. 5D is used for the purposes of generating Cost Estimates and practicing Target Value Design

• 6D – The 6D dimension is considered an "as-built" model delivered to the owner or facility manager as the project is completed. The 6D BIM is updated to record any on-site design variations, and populated with relevant building component data including operation and maintenance manuals, product details, warranty and replacement data, photos, links to relevant websites, etc. The 6D BIM, when integrated with BIM aware facility management systems can aid the facility manager in optimising retro-fitting, operations and maintenance through the buildings life-cycle.

O p p o r t u n i t i e s f o r A l l e n & Yo r k

• As BIM is a relatively new technology companies will either need to provide training to their staff or recruit BIM specialists

• Due to the efficiency of BIM projects will finish with better results / time / cost leading to repeat business and more profit = new projects/more $taff

• Fits in beautifully with the AY sustainability focus as this tool optimises this area for projects