sssi seminar digital engineering

SSSI Seminar

Digital Engineering

25 October 2016

Presenter: Dr Lee Gregory Managing Director

12d Solutions

Copyright © 2016 by 12d Solutions Pty Ltd

12d and Civil BIM

Resume

• Sydney University – Ph D Mathematics

• 1980 CEANET – Computer Engineering Applications

Offices around Australia

Timesharing Bureau

Introduced Moss (MX) to Australia

Software development - Father of SMIGS

• 1987 Founded 12d Solutions (formerly 4d) with Alan Gray

Consulting work in Civil Engineering

1991 Released 12d Model

2012 Released 12d Synergy

Currently

• Member Institute of Public Works Engineering Australasia

• Member BuildingSMART

• Founding member of Open BIM Alliance

• On International Committees/Expert panels for IFC Alignment,

Model Setup, Roads, Rail and Bridges

WARNING

Lee is a passionate believer in Open Data Exchange Formats

12d Advertising

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• 12d Model

Largest Surveying and Civil design software in Australia

and New Zealand. Celebrating 25 years.

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• 12d Model



12d Model is a Civil BIM System

12dXML (or 12da) is a published text format that can be used

to transfer data until Civil IFCs become available

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• 12d Model



12d Model is a Civil BIM System

12dXML (or 12da) is a published text format that can be used

to transfer data until Civil IFCs become available

• 12d Synergy

Newer product for collaboration and data management

BIM and Digital Engineering

What BIM-Digital Engineering is depends on

who you are talking to.

BIM and Digital Engineering

If a wide search of the literature for BIM and ISO

Standards is made, and all the marketing fluff is ignored,

one quickly sees that almost universally the BI in BIM is

Building Information (where Building is a noun) and

although BIM is about the process, all the objects are for a

Building on a site.

The other constant is that the International Standard for

transferring BIM data is the vendor independent published

format of IFCs.

BIM

In 2011 the BIM movement received a major boost when

the UK Government released the Government

Construction Strategy which aimed to reduce the cost of

government construction projects by 15-20% and BIM was

identified as one of the strategies to achieve help the

savings.

BIM

The Strategy contained an Action Plan that included the

objective for BIM to introduce a progressive programme of

mandated use of fully collaborative Building Information

Modelling for Government projects by 2016.

One early outcome of the Strategy was for

BuildingSMART to develop a national BIM standard with

the principles of interoperability. This will be key to future

delivery of Level 3 “Open & Shared” BIM.

BIM

The move to ‘full’ collaborative working is via distinct and

recognisable milestones, in the form of ‘levels’. These

have been defined within a range from 0 to 3, and, whilst

there is some debate about the exact meaning of each

level, the broad concept is:

Level 0 – no collaboration

2D CAD drafting only. Output and distribution is via paper

or electronic prints, or a mixture of both.

BIM

Level 1 – a mixture of 3D CAD for concept work, and 2D

for drafting of statutory approval documentation and

Production Information.

CAD standards are managed to BS 1192:2007, and

electronic sharing of data is carried out from a common

data environment (CDE), often managed by the

contractor.

There is no collaboration between different disciplines –

each publishes and maintains its own data.

BIM

Level 2 – collaborative working – all parties use their own

3D CAD models.

Design information is shared through a common file

format, which enables any organisation to be able to

combine that data with their own in order to carry out

interrogative checks on it.

Hence any CAD software that each party used must be

capable of exporting to a common file format.

This is the method of working that has been set as a

minimum target by the UK government for all public-sector

work, by 2016.

BIM

Level 3 – integrated working between all disciplines by

using a single, shared project model which is held in a

common data environment.

All parties can access and modify that same model,

removing the final layer of risk for conflicting information.

This is known as ‘Open BIM’, and the UK government’s

target date for public-sector working is 2018.

BuildingSMART is responsible for the Open BIM format

IFCs.

BIM

Lets Look at Some Real Civil Jobs

Woolgoolga to Glenugie

• First part of the 155 km of upgrade and new

highway from Woolgoolga to Ballina

Apart from Coffs Harbour and Raymond Terrace bypasses, completes the final stage of the 2000 km road from Brisbane-Sydney-Melbourne without a traffic light

• Arup – Parsons Brinckerhoff Joint Venture

• 35 Km highway, 5 Km access roads

• Had to produce BIM outputs as IFC 2x3 for everything including road and subsurface details all split into 100 m pieces

• NO SPATIAL STRUCTURE

• Different IFCs needed to go to Solibri, Navisworks or Revit


• Three alignments in use

Left carriageway

Right carriageway

Reference alignment

• 100 m breakup was with respect to the Reference alignment which is not always perpendicular to either the left or right carriageway. That is, it can be skewed with respect to the left and/or right carriageway. The “100 m lengths” may not be 100m on either carriageway

• Trimeshes for pavements etc were oputput as ifcFace, ifcConnectedFaceSet

• Design and IFCs have been completed and delivered

Solids not cross sections


• Solids

• Surfaces

• Strings


Data passed to Solibri

• Solids

• Surfaces

• Strings

• Flow Elements for drainage networks


• Motorway tunnel link between Hills

M2 Motorway and the M1 Pacific

Motorway

• Two key components – Tunnel and

M2 Integration

• Australia’s longest and deepest road

tunnel

– Longer than the Eastern Distributor, M5

East and Cross City tunnels combined

http://www.google.com.au/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&ved=0CAcQjRw&url=http://www.rms.nsw.gov.au/&ei=OHsGVfu4OcOVaq7mgfAM&bvm=bv.88198703,d.d2s&psig=AFQjCNFYPtgivBefg7M59pNnTyuVz1Xpaw&ust=1426574516741910

• Twin mainline tunnels = 16.3 km

• Four ramps = 4.1 km

• 75 cross passages = 1.4 km

• Four shafts = 210 m total depth,

90 m max

• Excavation = 2.25 million cu.m

• 19 road headers


For the 19 road headers

• Approx 4,000 – 5,000 cuts

• 75 cross passages = 1.4 km

• Will be approx. 100 million scan

points per lining (3 linings)

• Approx. 300,000 rock bolts

• If had to do conformance plots @

1m interval then approx 100K plots


Southern Interchange M2 Portal

Wilson Rd Shaft Trelawney St Shaft

Northern Interchange M1 Portal Tunnelling – Basic Scheme

And What Data Are They Using

And What Data Are They Using

3D Design Model from 12d

Live As-Built Model

www.westlinkm7.com.au Sydney Orbital

www.westlinkm7.com.au Project Structure

Design & Construction

Contractor

Tollway Operator &

Customer Service Management

Equity Interests

Transurban 40%

MIG 40%

Leighton 10%

Abigroup 10%

Westlink Structure

Federal Road:

National Highway

Project

Concession:

34 years

14/02/2003 -

13/02/2037

www.westlinkm7.com.au Key Motorway Features

• 40km dual carriageways, 2 lanes in each direction

• Wide central median (approx 15m)

• Provision for a public transport corridor

• 20 Km local road upgrades

• Full electronic tolling

• 40 km shared path / cycleway 4m wide

• Links M5 at Prestons; M2 at West Baulkham Hills, M4 at Eastern Creek

www.westlinkm7.com.au Design Features

• Designed in 8 Sections

• 1 Million m2 Concrete Pavement / Asphalt Overlay

• 8 Million m3 Earthworks

• 17 Major Intersections

• 146 Bridges (32 Segmental)

www.westlinkm7.com.au

180 Designers


Over 8000 Design

Drawings


8 million cubic meters

www.westlinkm7.com.au Machine Control - Grader

www.westlinkm7.com.au Interchange 8 - M4 and M7

www.westlinkm7.com.au Concrete Paving


• Construction of all roads and bridges was done with

no surveyors pegs

• All controlled from Digital Electronic Model, including

the casting and positioning of the bridge sections

• Calculated savings in wooden pegs - $1M


• Construction of all roads and bridges was done with

no surveyors pegs

• All controlled from Digital Electronic Model, including

the casting and positioning of the bridge sections

• Calculated savings in wooden pegs - $1M

• Construction was done in 2005

So why are we discussing Digital Engineering

and BIM as some new fangled thing when



• Surveyors have been using digital models ever since

data recorders were introduced over thirty years ago

• Construction surveyors have been using digital models

on major projects for over twenty years

• Cadastral surveyors are currently moving onto ePlan



Because there are two sides to Digital Engineering/BIM:








Because there are two sides to Digital Engineering/BIM:

• Vertical BIM – Architects, Structures

At a BIM presentation in Sydney last year it was stated that 70% of people on a building site don’t even use a plan

• Horizontal BIM – Civil BIM - Roads, Rail






The Positives of Architect BIM

• BIM introduced Architects to 3D

• BIM introduced 3D objects (trimeshes) to Civil

• BIM introduced to main stream the concept of having data

and attributes instead of drawings

The Positives of Architect BIM

• BIM introduced Architects to 3D

• BIM introduced 3D objects (trimeshes) to Civil

• BIM introduced to main stream the concept of having data

and attributes instead of drawings

And do not underestimate to importance of the realisation that a

3D digital model must be the source of truth instead of drawings.

Even through Civil has produced these fantastic examples of

using Digital Engineering, it is entirely through the back door and

even today all that is often handed out is thousands of useless

CAD drawings.

Paper BasedDrafting

Plan View

Long Sections

Cross Sections

Cross Sections

Implementation

Changing Thinking and Processes

HIS

TOR

ICA

L

Plan View

Long Sections

Cross Sections

Cross Sections

Computer AidedDesign

(Digital Models)

Implementation

CU

RR

ENT


Not much has changed

CAD sped up the process slightly but it is still mainly manual and time consuming and the biggest bottleneck and source of errors

Digital Engineering model is the source of truth

Drawings and reports are only ways at looking at the model

FUTU

RE

ComputerGenerated XML

DESIGN ADAC XML

Computer AidedDesign

(Digital Models)

Implementation(Machine

Automation)

Plan ViewLong

SectionsCross

SectionsCross

Sections

ComputerGenerated XML

AS CON ADAC XML


DE XML DE XML

The Downside of Architects BIM

The new BIM Managers thought that:

The Downside of Architects BIM

• 3D was a brand new idea and no one else had heard of it

• Architect BIM can be applied to everything in the world

• The world is flat

• And for many of them, the world has a 20 Km diameter

• Unfortunately the world is not flat

• Unfortunately the world is bigger than a 20 Km diameter

• Unfortunately a road can change every millimetre

• Unfortunately moving beyond flat space requires the use of map

projections and map and combined scale factors

• Unfortunately for most Civil works, a definition of an Alignment is

essential

A Civil Digital Engineering System Needs

• Large coordinates – e.g. Eastings and Northings

• Handle large and long horizontal projects

• A Helix for arcs

• Strings with diameters and attributes on strings, vertices and segments

• Transitions – spirals, cubic parabolas etc (varying radius helix)

• Drainage/Sewer pits and pipes

• Tins for surfaces (hundreds of millions of points) and trimeshes for 3D objects

• Alignments – independent horizontal and vertical geometry; vertical defined in

terms of 2D distance (chainage) of HG

• Name/Code for strings – used in Australia at least since 1980

• A published format available free of charge to everyone

• People who understand all of the above plus longitude and latitude, heights,

coordinate systems, map projections, and how to bringing together disparate

data

However as you saw in the earlier examples


surveyors in Australia have been doing

Digital Engineering for years


surveyors in Australia have been doing

Digital Engineering for years

Finally the rest of the world is catching on

Surveyors

Surveyors

Digital Engineering Needs You !

DE

Thank You

Presenter: Dr Lee Gregory Managing Director

12d Solutions

sssi seminar digital engineering

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