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Andy Lohan

on 26 June 2014

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Transcript of BIM

What are we doing?
Information Management
Optimization of information exchange hinges of

Information that is tied to one format or one piece of software is very inefficient.

Technology is also continuously evolving and information produced now needs to be easily inputted into future programmes.

The solution?

Industry Foundation Classes (IFC)
Model Types
BIM Levels

How to Implement BIM on a Project Effectively
BIM at Construction Phase
Levels of BIM
Level Zero - Unmanaged CAD in 2D
Model Types
Geometric Models
Level One
- Managed CAD in 2D or 3D
- collaborative tool providing a common data environment.
Level Two
- A managed 3D Environment held in separate discipline BIM tools with data attached.
- 4D construction sequencing and/or 5D cost information.
Level Three
- Full collaborative process enabled by web services.
- 4D cost sequencing
- 5D cost information
- 6D project lifecycle management information
Geometrical Models
- Design Review
- Design Coordination
- Clash Detection
- Value Engineering
Time Models
- Program and Cost Monitoring
- Pre-Fabrication
- Sequencing
- Contract Management
Asset Management Models
- As Built Documentation
- Operations and Maintenance
- Property Management

Cost Models
- Quantity Surveying
- Cost Estimation
- Planning
Asset Management Models
What is BIM?
Building Information Modeling?
3D Modelling?
Data Management?
Type of software?
A process?
Time Model
Management Information

Put in place the appropriate protocols and standards
Information needs to created, stored, transferred and managed in a structure and managed manner.
This has to be outlined clearly at the beginning of a project.
Example: Replacement of an existing structure
Common Data Environment

Easy place to share, manage and find information

Aid QA

Promote communication and collaboration

Point Cloud Survey

Improved accuracy over historical drawings

Reduces risk

Less sight visits required
Construction Management Web Portal

Remotely monitor developments on site

Optimize approvals process

Improve QA

BIM is
information management and modelling (IM&M)
Construction Management Web Portal

Format of background model: File type, structure, naming conventions, orientation, units etc.

Define level of detail of model required for input to system

Point Cloud Survey

What exactly needs to be surveyed?
How is this information going to be used?
What density of survey is required?
How will the large files sizes be transferred?
What do we do now?
Its organized and filed at the end of the project. This is time consuming and expensive or not done properly.
Paper files and unintelligent/unstructured electronic files means future use of this information in painstaking.
What is the proposed solution?
Construction Operations Building Information Exchange (COBie)
Structured information that can be viewed in design, construction and maintainance software or even in simple spreadsheets.
COBie is essentially a human viewing form of IFC.
The key concepts behind this idea is to:
1. Produce information in a format that is versatile.
2. To continuously produce the information in the correct format so reorganization is not required at the end.
Series of databases that can be easily viewed and updated from concept design right through to demolition.

Common Data Environment

Needs to be in place before concept design begins.

What system shall be used?
What is the folder structure?
How is information verified?
How is QA incorporated?
Who is responsible

BIM is the management and modeling of
Significant bridge modeling capabilities.
Common Data Environment

Point Cloud Survey

What software is to be used

File naming convention

File transfer protocols
Construction Management Web Portal

Set key performance targets
Ensures that project stays on target to achieve each deliverable.
Industry Foundation Classes (IFC) allows this interoperability between BIM applications to occur.

It is free to use, controlled by a non for profit organization and is not owned by one vendor or a group of vendors.

IFC is an
exchange format
not a common format.

It is used to transfer information between software packages.

If you import IFC into a piece a software it gets converted to the software format.
Will it work?

Its a good idea - attempting to be open source, independent and future proof

UK government have mandated it as part of their BIM strategy.

However critiques sight that:
Dependent of software providers engaging
Complexity - not 'human readable'
As built and future works loss of functionality.
IFC is only an exchange format
At best it can only act as a static background
How to Implement BIM?
Clearly define what both the client and delivery team want to achieve.
What value will this add to the project?
If its not going to add value then why do it?
Plan how each deliverable will be achieved
You need to begin at the end and work backwards.
What is required at each stage to ensure delivery?
What level of detail is required at each stage?
Who will be responsible at each stage?
Expertise in taking and manipulating point clouds
Developing Project Execution Plans that incorporate IM&M
Developing modeling standards and protocols.
Leading implementation of BIM on STIP
Contributing to TfLs BIM related Employers Requirements.
Its aim is to
the design, construction, operation and maintenance of a structure.
BIM is not an isolated aspect of a project. It needs to encompass all elements of the project if it is to be effective.
BIM led projects require significantly more time at the planning stage but this initial sacrifice can lead to significant savings during design, construction and operation.
BIM is not currently a perfect solution but current industry practices are highly inefficient. These inefficiencies are what BIM is trying to address.
It requires information to be stored, managed and shared within one central location in a consistent structured manner.
The purpose of BIM is to
the development, planning, execution and operation of a structure.
The aim of this optimisation is to: - increase knowledge and quality of delivery
- reduce risks and costs
It does this using integrated computer models and data bases of information.
It is
a drawing exercise or 3D modeling! A 3D geometric model is
a BIM model.
A BIM model is a model containing information such as geometry, materials, costs, sequencing, specifications, certification etc. A 3D model is often just the most intuitive environment in which to display this information.
It is
an independent part of a project but will influence all aspects of the project if implemented correctly.
Full transcript