Building Information Modelling

1
Building Information Modelling

• (The Impact on Cost Planning Cost Management)
• The Next Generation

2
Quantity Surveying and the Next Generation of
Modelling
IFC Model from ArchiCad
DWF Model from Revit
3
BIM Project Objectives(Quantity Surveying
Discipline)

• Reduce the perceived risks in tendering for
• Principals,
• Head Contractors and,
• Sub Contractors
• Maximise efficiencies in the interface with other
  disciplines
• Seamless interaction of design tools

4
Planned Future Project Deliverables Resulting
From Object Orientated Models

• Quantity Surveying Discipline
• Cost Plan / Project Budget
• Genetic Program (4D)
• Genetic Cash Flows (5D)
• Progress Payments
• Construction Cost Analysis
• Facility Financial Asset Management
• Life Cycle Cost Planning / Analysis
• Value Management / Scope Management

5
Lessons From Pilot BIM Projects

• Key attributes that impacted our confidence in
  the information sourced from the models
• Consistency between modellers
• (Family Names, Modelling Techniques, Extent of
  Modelling)
• Lack of structure of information imported from
  model
• The default UOM (units of measurement)
• Ie. Count, or m2 (can not easily identify or
  change default UOM)

6
BIM The Assets Life Cycle
BIM Classification Code
BIM Classification Code
BIM Classification Code
7
BIM Classification Code Structure
8
Measurement Techniques Vs Modelling Techniques
9
Measurement Techniques Vs Modelling Techniques
10
Modelling Techniques
11
Modelling Techniques
12
Generic Model Elements

• Limited model data
• Identity
• Quantities
• Lack of Consistency

13
Measurement Techniques

• Room information used to populate unknown model
  information
• Wall finishes
• Floor finishes

14
Current Algorithmic Cashflows
15
Genetic Algorithmic Cashflow
16
Genetic Algorithmic Cashflow
17
Moving Forward

• Contract Tendering via Integrated Project
  Delivery
• Continued Systems Tool Development
• Additional Pilot Projects
• Closer Collaboration with Industry
• Design
• Construction