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Pyrmont Bridge
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BEST PRACTICE ASSET MANAGEMENT BIM – Pyrmont Bridge Case Study
Wayne Sahlman Sydney Harbour Foreshore Authority
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• The Asset • Heritage • Why BIM? • Model
Specifica:on • Applica:on • Repor:ng • Lessons Learnt • The Future
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• World’s oldest surviving electrically operated swing span bridge
• Commissioned 1902 • Na:onal engineering
landmark 1992 • NSW State Heritage lis:ng
2002
HERITAGE:
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• World’s oldest surviving electrically operated swingspan bridge
• Commissioned 1902 • Na:onal engineering
landmark 1992 • NSW State Heritage lis:ng
2002
OWNERSHIP:
• NSW Roads, DMR • DHA -‐ Bi-‐Centennial Development Project -‐
1984 (Dept Public Works) • DHA -‐ Leightons Contractors (1988 -‐ 2002) • SHFA ongoing
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A New Approach to Asset Management
BIM (Building Informa:on Modelling) is a process involving the genera:on and management of digital representa:ons of physical and func:onal characteris:cs of built assets.
A NEW APPROACH
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Benefits of BIM: • Supports decision-‐making about an asset’s opera:onal
life by providing a single database for all data to reside
• Open protocol format
• System integra:on
• Start of long-‐term, archival, intelligent asset record for the bridge
• Supports the Burra Charter (Heritage Conserva:on Guideline)
BENEFITS
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Objective:
• to support the development of a minimum sustainable Building Informa:on Model for the asset management of Pyrmont Bridge
• ...which will in turn support the minimum data set for the intelligent opera:on, maintenance and refurbishment of the Bridge
PYRMONT BRIDGE BIM
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Tender Brief:
BIM Objective Technical Specification
Tenderers to: • Submit a Building Management Plan (BMP)
• BMP is a formal document defining “how the project will be executed, monitored and controlled with regard to BIM”.
• Clear descrip;on of project objec;ves, what deliverables are required at handover
• NATSPEC Na;onal BIM Guide – Establishes key elements of a BIM-‐based project. – IFC and COBie standards specified.
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Asset Specification:
• Asset nomenclature – BIS standards – Pyrmont Bridge Documenta:on
• Compliance Context – Structural compliance, heritage significance, opera:ons
• Asset Informa:on – Repor:ng and analysis – Strategic planning
• Inspec:on Methodology – Condi:on Assessment -‐ data collec:on, data entry
PYRMONT BRIDGE BIM
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early modelling
PYRMONT BRIDGE BIM
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Pyrmont Bridge Model Auditing:
• Model Quality • is model assembled and exported correctly?
• is modeller consistent in modelling?
• does model contain the correct scope of objects?
• do objects have all data requirements sa:sfied?
• Model Audi:ng • Regular quality check
– Defined milestones
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Application of the Model
A so_ware-‐based tool for capturing and analysing condi:on assessment data, managing opera:onal and preventa:ve maintenance. Procurement of a pilot So_ware as a Service (SaaS) to provide: • User friendly interface • Portability • NSW Government Guidelines compliance
Application
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Challenges: • Not undertaken previously, let alone to
this scale (7,343 elements assessed) • Manual data entry to digital – cultural
change • Customisa:on of the iPad,
customisa:on of screens for data entry, shortcuts, and download
Pyrmont Bridge Condition Assessment – March 2015
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Pyrmont Bridge Reporting:
• Original / non-original fabric vs deterioration over time • Works package development – lineal metre, surface area estimates • Exception reporting – reliability/accuracy • Management reporting holistic view to condition assessment
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Pyrmont Bridge Reporting:
Orientation to weathering Hanging Rods span 7-12 Paint Condition
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PYRMONT BRIDGE BIM
Lessons Learnt Contract Specification: • Model too detailed. Nuts / bolts / Plates. LOD 500 – now reduced for usability /
efficiency.
• IFC export file size 927 MB, Solibri Optimizer > 545 Meg> Zuuse Optimizer 400 Meg. Need to break model down into manageable sections. Identity data to be clearly defined at onset.
• Contract required Condition Assessment data be captured as a part of Model Construction Contract.
• Cobie Format - Internationally adopted spec for information exchange suitable for buildings / not Bridges. Better definition for electrical and mechanical components.
• Nomenclature not specific enough in relation to a number of attributes.
• Lidar Scan
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PYRMONT BRIDGE BIM
Lessons Learnt Condition Assessment: • Data preload
• iPad too big in particular areas for photographing, inability to take photos from photos already taken
• No flash available on iPad
• Moving platform, glare settings, battery recharge facility
• Tablet navigation
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PYRMONT BRIDGE BIM
THE FUTURE 1. Pyrmont Bridge • Progressive Data Capture – Bridge Health Index / Element
Remediation / Model correction
• Model efficiency
• Work Package Development
• Operational / Preventative Maintenance
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PYRMONT BRIDGE BIM
Operations functionality
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PYRMONT BRIDGE BIM
Work Package Development
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PYRMONT BRIDGE BIM
THE FUTURE 2. Organisational
• To implement BIM on a precinct wide basis incorporating public domain and building assets (particularly heritage) for Asset Management.
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PYRMONT BRIDGE BIM
Acknowledgements: ROADS AND MARITIME SERVICES
Bridge Engineering Division, Southern Region and South Western Region Asset Management
GHD (Model Developer) Jorge Pautasso Paul Hellawell
SAAS PROVIDER Malcolm Foort
CQR BIM CONSULTANT John Mitchell
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THANK YOU