Realising the advantages of B.I.M. · 2013-05-30 · processes through the application of...
Transcript of Realising the advantages of B.I.M. · 2013-05-30 · processes through the application of...
Realising the advantages of B.I.M.
Presented by: Philip J Calvert
23rd April 2013
Introduction
The A.G Coombs Group
- Privately owned group of companies with 65 years operation.
- 550+ permanent staff across Victoria, NSW and Queensland.
- “Whole of Life” capability, incorporating Advisory, Small Projects, Major Construction,
ICA, Service & Maintenance, and Technical Facility Management.
Philip Calvert
• BIM Coordination Leader - UQ Oral Health Centre Project
• Project Manager - Technical Building Services Specialist
Management of high profile, cutting edge & technically biased projects incorporating
BIM, Trigeneration, Natural Ventilation, Green Star, Health Services, Data Centres
and Critical Infrastructure Automation in Australia and the UK.
A successful journey is as much about the map
as it is the mode of transport...
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The start of a journey...
Overview
• BIM – a process, not a product
• Where are the advantages?
• Proven BIM methods that improve on-site efficiency.
• Key steps to maximising a project’s BIM advantages.
• Conclusions
So what is BIM?
• BIM is a process utilising 3D modelling software and databases to
continuously and accurately develop, communicate and record a
facility’s data throughout the phases of its lifecycle.
• The BIM process is a direct evolution of traditional construction
processes through the application of technology.
The advantages of BIM
• BIM offers industry participants and client’s benefits including:
•True accuracy of design
•Efficient collaboration
•Improved scope clarity
•Improved install methods
•Reduced on-site rework
+ Advanced data retention & retrieval capability
•Reduced Project Cost
Potential Cost
Improvement :
~ 5% -10%
Where does BIM add most value?
Concept Basic
Design Detailed Design
R&R
SIMULATED BUILD
(3D)
Services Coordinatio
n
Shop Drawing
PHYSICAL ASSEMBLY Verify
Concept Basic
Design Detailed Design
DESIGN DOCUMENTED
(2D)
Services Coordination
Shop Drawing
PHYSICAL
BUILD
Review & Revise
Verify
Traditional (Design Then Build)
BIM – (Simulate Then Assemble)
Concept
0.9%*
Design
8.1%*
Construction 91% Structure 57%*, Services 34%*
In $ terms:
- Typical Example: Brisbane 14 storey, 5 star, comm high rise (28,200m2 GFA)
- Traditional cost estimate = $100m (+ fit-out)
- Potential BIM Efficiency Gain = 5 to 10 % of $92m = $4.6m to $9.2m (est)
* Percentage Spilt of Typical Project Costs - RLB Data 2009
TYPICAL PORTION OF OVERALL PROJECT BUDGET
Examples of Site Benefits
Clash Prevention & Resolution
A major benefit of BIM during construction is reduction in abortive works.
Regardless of the origin of a
clash, its negative impact on
all stakeholders in terms of :
-on-site review time
-re-design costs
-meeting time
- abortive works
.....cannot be stressed
highly enough.
Pre-casting Fixings
Improving On-site Efficiency
Pre-Fabricated Assemblies
UQ Oral Health Centre , 3,100 precast hangers
AG Coombs 2012
Peter Doherty Institute
Prefabricated Multiservice Riser
18 x Self-Supporting Steel Sections
Site Installation Time: 4 days
AG Coombs 2012
Improving On-site Efficiency
BIM to Field
Applying Tablet based technologies for model reviews,
measurements, and installation records
AG Coombs 2013
Where does BIM add most value?
Current
Improvement :
< 1%
Less than $900k of the $9m on offer
Potential Cost
Improvement :
~ 5% -10%
Concept Basic
Design Detailed Design
R&R
SIMULATED BUILD
(3D)
Services Coordinatio
n
Shop Drawing
PHYSICAL ASSEMBLY Verify
Concept Basic
Design Detailed Design
DESIGN DOCUMENTED
(2D)
Services Coordination
Shop Drawing
PHYSICAL
BUILD
Review & Revise
Verify
Traditional (Design Then Build)
BIM – (Simulate Then Assemble)
Concept
0.9%*
Design
8.1%*
Construction 91% Structure 57%*, Services 34%*
In $ terms:
- Typical Example: Brisbane 14 storey, 5 star, comm high rise (28,200m2 GFA)
- Traditional cost estimate = $100m (+ fit-out)
- Potential BIM Efficiency Gain = 5 to 10 % of $92m = $4.6m to $9.2m (est)
* Percentage Spilt of Typical Project Costs - RLB Data 2009
TYPICAL PORTION OF OVERALL PROJECT BUDGET
Getting our processes right
Focusing on fundamentals
1. Definition of Services Zones during the initial design phase is still a fundamental
requirement.
2. If traditional services zones can’t be accommodated, areas need to be pre-
coordinated during the initial design phase to ensure that spatial allowances are
sufficient.
3. Riser positioning and sizing is fundamental to any workable design.
3D modelling assists a project team to identify and
rectify significant spatial issues before they
become a co-ordination issue.
Quality is Everything
1. Reference models and co-ordinated layouts (RCPs) must be
accurate and maintained.
2. Operational System designs must be complete and should include
basic performance data as a minimum.
3. Any amended elements must be updated in 3D by the responsible party.
Supplementary 2D documentation is unusable for 3D co-ordination.
Responsibility for the accuracy and quality of any individual model must
contractually rest with the current editing party.
Adding value with maximised efficiency
1. The project must have a common agreed platform (IFC or alternative) that
allows stakeholders to easily share model data between design tools.
2. The intention is that each stakeholder adds only the appropriate amount of
additional value to the model in each phase. No more, no less.
3. Application of common standards (such as BIM-MEPAUS) are critical to allow the
efficient and constant development of data by subsequent stakeholders.
Most importantly, a project’s contractual scope must clearly identify the
obligations, deliverables and handover points for each team member
with direct relation to the project’s defined BIM process.
Conclusions
As an industry, BIM allows us to pass on true benefits to our clients.
These advantages can only be achieved if we:
• Maintain adherence to fundamental design principles.
• Ensure the quality of data is maintained at all stages.
• Maximise the efficient transfer of data throughout the entire BIM
process.
BIM – How good is your map?
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The A.G. Coombs Group “Together we achieve the extraordinary!”
A.G. Coombs Pty Ltd (Qld)
54 Berwick St
Fortitude Valley, QLD 4006
P: 07 3648 0500
For more information, please go to:
www.agcoombs.com.au
www.bimmepaus.com.au