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