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 : info@steensenvarming.com

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Sydney October 2014Ref. no. 00630-01

Presented by Chris LockOctober 2014

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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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�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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�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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�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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�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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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