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An Examination into BIM Feasibility: Working with Existing Infrastructure Mr. Chris Lock, BIM Manager, Steensen Varming HKIBIM-CIC BIM Conference 2014 Date: 29-Oct-2014 (Wed) Time: 9:30 a.m. – 5:00 p.m. Venue: Room 201 B & C, Asia World Expo, Hong Kong International Airport, Lantau, Hong Kong Organizers: The Hong Kong Institute of Building Information Modelling (HKIBIM) http://www.hkibim.org Co-organizers: The Construction Industry Council http://www.hkcic.org HKTDC Hong Kong International Building and Hardware Fair http://www.hktdc.com/fair/hkbdh-en/HKTDC-Hong-Kong-International-Building-and-Decoration-Materials-and-Hardware-Fair.html The HKIBIM - CIC BIM Conference 2014 is the 5th Annual Conference organized by the Hong Kong Institute of Building Information Modelling (HKIBIM). It is the premier annual event for experienced AEC professionals to demonstrate the practical use of Building Information Modelling (BIM) processes using real cases. The speakers will illustrate lessons learned in practical projects so that others can improve their efficient use of BIM and advance practical knowledge.
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Working with Existing Infrastructure
DISCIPLINE STEENSEN VARMING
If a building becomes architecture, then it is art. Clearly if a building is not functionally and technically in order, then it isn’t architecture either, it’s just a building. Arne Jacobsen
Mechanical EngineeringLighting DesignSustainable DesignElectrical Engineering
CopenhagenLondonSydneyHong KongNew York
Ryesgade 23,2200 Copenhagen N, DenmarkCVR 34 48 88 35t : +45 / 50 99 10 10e : [email protected]
steensenvarming.com
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Sydney October 2014Ref. no. 00630-01
Presented by Chris LockOctober 2014
steensenvarming.com
STEENSEN VARMING
�Steensen Varming are a Danish engineering firm
that established its Sydney office in 1973
�In April this year the firm launched its Hong Kong
Studio
�Steensen Varming operates around the ”One
Global Studio” business model
“If a building becomes architecture, then it is art. Clearly if a
building is not functionally and technically in order, then it
isn’t architecture either, it’s just a building.”
— Arne Jacobsen
Introduction
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�Documentation was developed by hand in the past,
each iteration being quite time consuming
�3D models are not a new approach. Models have
been used to communicate design in the past and
are still used today
Introduction
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STEENSEN VARMING
�Existing Infrastructure Projects can extend from an
expansion on an existing building to a design of a
shopping plaza
�Our portfolio has a significant component of
culturally based infrastructure, most of which is
existing
�Managing existing infrastructure based projects
continues to be a challenge even today
�The Problem?
�Documenting Existing components
�Stakeholders designing in different formats
Existing Infrastructure
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�Current Industry expectations are generally driven
by cost and there is a perception this is achievable in
vector based packages
�Clients want to minimise risk. Vector based
approach to existing elements is a poor approach to
achieve this
�Establishing clear BIM interfaces with existing
elements in the design phase can drastically
improve how we design intergration into existing
systems
Can We Use BIM to Document Existing Infrastructure?
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�BIM can identify
�where risk exists
�design changes before construction
�high level quantity and cost control with existing
systems
� legacy data for intergration into FM systems
�Results of BIM intergration are significant. This is
particularly prevalent in the construction phase
�Delivering a BIM that articulates a new design, and
also existing components can provide a pathway for
more sophisticated organisational FM
Can We Use BIM to Document Existing Infrastructure?
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”If a building is worth building,
its worth building twice, one
digitally during the design
process and again physically
during the construction process”
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STEENSEN VARMING
�Current BIM development strategies with existing
Infrastructure extend to utilising as built drawings to
carrying out site surveys.
�Where do you start? How accurate is the As Built
data? Developing auditing systems to address this
can be time consuming and often inaccurate.
�Laser Scanning can provide a robust, cost effective,
and adaptable alternative
How to build a BIM- Is the Information you have current?
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�Laser Scanning is a process of rapid data capture
�Laser scanning works by capturing a matrix of
physical data in xyz format.
�Data capture speed varies dependant on structure
complexity
�Primary costs in a Laser Scanning is labour
dependant
Laser Scanning
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STEENSEN VARMING
�Generally any area can be scanning.
�Scanning is limited by line of site.
�Laser Scanning can dangerous to eye sight with
certian units. Safe work method statement should
always be established
�Time involved in the whole process is dependant of
space complexity and density of elements
Laser Scanning
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On-site Scanning
Post Production
Scan Registration
Post Production
Project AuditPSC into BIM
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STEENSEN VARMING
�Laser Scan outputs are a collection of many points.
Please remember a Laser scan is not a BIM.
�Building a BIM from a PCS can be a time consuming
process. A plan must be established initially with
clear objectivies and Level of Detail (LOD) agreed.
�PCSs are not a survey. Control can be inserted to
establish desired tolerence
Integrating a Laser Scan (PCS) into a BIM
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�Good work practices of utilising PCS in a BIM
�Establishing well founded control from a
surveyed location.
� Register key scans first, then populate
additional scans to limit tolerence creep
�Managing the data. Always export as seperate
scans to enable better control in a BIM.
�Point extraction tools can greatly assist in BIM
conversion however the process is still and
elements by element process.
Integrating Laser Scans (PCS) into a BIM
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�Rapid data extraction
�Data is derived from modelled elements
drastically reducing error in tabulation
�Data is dynamic- reverse feeding information
back into the model from tables and schedules
�Information is available dynamically across
disciplines
�Modelled elements can be used for
computation
�Carry out Quality checking using ROT’s (Rule of
Thumbs)
Leveraging a BIM for Design
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�Rapidly communicating design intent
�QS take offs and accurate quantities
�Design integration and validation
�Facility to re-design components with inbedded
engineering data
�Latitude to provide alternative solutions in a more
rigid and transparent format
Contractor Engagement
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�Setup drawings once, leverage BIM to detail
changes
�Extract data once. Establish area, size, space and
populate to Engineering data across all disciplines
�Update information in a tabulated format and realise
changes in all linked areas
�Utilise the model for Engineering calculations
�Rapid extraction of data and analisis of BIMs
�Leverage for manufacturing, extract to CAD/Cam
format, ability to develop DfM (design for
Manufacture)
�Deliver BIM for FM.
Efficiencies in the BIM Process
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Case Study
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Gladesville Bridge
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�Project Description
�Third Major bridge in Sydney Harbour
�Fiftieth Anniversary in September this year
�Currently the super structure is unlit
�Project was to provide lighting to the super
structure during the Anniversary Celebrations
�No drawings or surveys available
�Quick turn around project with a low fee.
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STEENSEN VARMING
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In Conclusion
• Establish a clear approach to what will be documentated
• Note limitations and how risk will be managed
• Take care to ensure current information is accurate
• Consider new techniques such as Laser Scanning
Existing Infrastructure
Contact Hong Kong
Chris Arkins
Hong Kong: Room A, 10/F
3 Connaught Road West,
Hong Kong
+852 8193 2992