The Reality of Level 2 BIM · the practical implications of level 2 bim bim region south 11/11/2015...

THE PRACTICAL IMPLICATIONS OF LEVEL 2 BIM

BIM REGION SOUTH 11/11/2015

THE PRACTICAL IMPLICATIONS OF

LEVEL 2 BIM IN DELIVERING PROJECTS

Nigel Davies



WHO WE ARE

• Evolve Consultancy • CAD & BIM Management Services

• Technology integration

• Project support & mentoring

• Nigel Davies • 20+ years’ experience in Engineering and Architecture

• Chair of the AEC (UK) CAD & BIM Protocols

• Regular writer and presenter

• Bennetts Associates, John McAslan + Partners,

Ramboll, RSH+P, Tideway, Volker Fitzpatrick…

BIM

MicroStation Revit

Evolve



WHAT IS BIM?

• A phrase coined by Autodesk to

describe processes that were

not possible using regular CAD

systems

• A “Single Building Model”



WHAT IS BIM?

“Building Information Modelling (BIM) is a

collaborative way of working, underpinned by

the digital technologies which unlock more

efficient methods of designing, creating and

maintaining our assets. BIM embeds key

product and asset data and a 3 dimensional

computer model that can be used for effective

management of information throughout a

project lifecycle – from earliest concept

through to operation.”



WHAT IS BIM?

“It's about information use, reuse, and

exchange, of which electronic documents are

just a single component.”

“Making the right information available to

the right person at the right time.”



LEVELS OF BIM



LEVELS OF BIM

• Level 0 • CAD

• Lines, arcs, circles representing building

elements



LEVELS OF BIM

• Level 1 • “Structured” CAD

• Common standards & protocols

• BS1192:2007 (+A13:2015)

• Integration of 3D into the design process



LEVELS OF BIM

• Level 2 • “Federated” BIM

• Common standards & protocols

• PAS1192-2 (page viii)

– Employers Information Requirements

– Evaluation of capability & capacity

– BIM Execution Plan

– “Single” environment

– Enabling tools



LEVELS OF BIM

• Level 3 • Integrated BIM

• The “single project model”

P.S.

IFD = International Framework Dictionary (now bsDD)

IDM = Information Delivery Manual (ISO29481-1:2010)



WHAT IS LEVEL 2 BIM?

• “Level 2 BIM is a series of domain

specific models (e.g. architectural,

structural, services etc) with the provision

of a single environment to store shared

data and information” http://www.bimtaskgroup.org/bim-faqs/

• NOTE: It’s a graded wedge!



PAS1192-2 LEVEL 2 BIM REQUIREMENTS

• Discipline-controlled models, sourcing information by reference, federation or direct exchange

• Employers Information Requirements (EIR)

• Pre-contract capability assessment

• BIM Execution Plan (BEP)

• Provision of a single environment to store shared data

• Processes & procedures in Table 1*

• Some form of enabling tools (PAS1192’s list is not exhaustive)

* Basically says the same as the BIM Maturity Wedge © Bew & Richards



PAS1192-2 LEVEL 2 BIM REQUIREMENTS

• NOTE 1: Coordinated model via a single point of responsibility (lead designer)

• NOTE 2: COBie, PDF and native files

• NOTE 3: Level 2 BIM defined in PAS1192 may not be the definition of Level 2 BIM you use!

(Page ix)



PERCEPTION OF COMPLIANCY

Level 0 Level 1 Level 2 Level 3

22% 60%

15% 3%

2D 3D



REALITY OF COMPLIANCY

Level 0 Level 1 Level 2 Level 3

0% 18% 37% 45%

2D 3D



PAS1192-2:2013

• Employers Information Requirements • Name of Information Manager(s)

• Description of CDE

• Schedule of information exchanges

• Exchange formats

• Data & asset requirements

• File naming, annotation and symbology requirements

• Spatial co-ordination and zoning protocols

• Archiving procedures

• Security requirements and access rights procedures

EIR



PAS1192-2:2013

• BIM Execution Plan • General Project Information

• BIM Uses

• Variances from contract

• Who is responsible for each model and to what Level of Development

• LOD & LOI required at each building stage.

• Description of CDE

• Method(s) of data exchange

• Setting out information

• BIM coordination meeting aims and frequency

• BIM authoring tools

• Known compatibility issues

EIR

BEP



PAS1192-2:2013: LOMD

LOMD1

PREPARATION & BRIEF

• A model

communicating the

performance

requirements and site

constraints

LOMD2

CONCEPT DESIGN

• A conceptual or

massing model

intended for whole

building studies

including basic areas &

volumes, orientation,

cost

LOMD3

DEVELOPED DESIGN

• Generalized systems

with approximate

quantities, size, shape,

location and

orientation.

LOMD4

TECHNICAL DESIGN

• Production, or pre-

construction, “design

intent” model

representing the end of

the design stages.

• Accurate and

coordinated, suitable

for cost estimation and

regulatory checks.

LOMD5

CONSTRUCTION

• An accurate model of

the construction

requirements and

specific building

components, including

specialist sub-contract

geometry and data.

LOMD6

HANDOVER

• An “as built” model

showing the project as it

has been constructed.

• The model and

associated data is

suitable for maintenance

and operations of the

facility.



PAS1192-2:2013

• Roles & Responsibilities • Information Management (General & Task)

• Project Delivery Management

• Task Team Management

• Interface Management (Lead Designer?)

• BIM Authors

• This is required to be specific individuals

EIR

BEP



PAS1192-2:2013

• Information Exchange • The individual domain 3D models in their native file formats

• The 2D reviewable design deliverables cut from the models

• COBie UK 2012 data

EIR

BEP

Datadrop1

Datadrop 2

Datadrop 3

Datadrop 6



PAS1192-3:2014

• Asset Information Model • Not usually the same model as BIM

“The PIM used as the basis for the AIM should include only the objects or elements representing what has actually been constructed, which shall replace those objects or elements representing design intent.”

• To be acceptable at Gate 6 the checks that should be carried out are: • model suitability check;

• technical content check;

• information exchange;

• drawings extract checks along with any additional documentation that is shared as a co-ordinated package of information.

EIR

BEP

AIM

Datadrop 1

Datadrop 2

Datadrop 3

Datadrop 6



PREPARING FOR BIM LEVEL 2



COMMON FAILURES

• Terminology • Zone (BS1192) = Volume (PAS1192)

• LOD(efinition) = LOD(evelopment) =

LOMD

(not forgetting Level of Detail)

• LOD400 = LOD4 = Stage 4?

• LOD4 ≠ 4d modelling



COMMON FAILURES

• Employer Information Requirements don’t exist

• EIR is unreasonable / unfeasible / unrequired • Make BIM Level 2 workflows your “business as

usual” activities

• BEP template?

• “We can’t do level 2 unless everyone is” • Working to the intentions of BIM Level 2

• Make BIM Level 2 workflows your “business as usual” activities



COMMON FAILURES

• Contractor dictates different information

requirements at later date

(especially at novation) • BIM ≠ PIM ≠ AIM

• When was the BIM Execution Plan defined?

• There is no BIM Execution Plan • The BEP is a collaborative response to the EIR

• Understand your deliverables

(Model Responsibility Matrix)

• LOI!



COMMON FAILURES



• A challenge to “traditional ways of working” • More data-centric, less drawing-focussed

• EIR vs “educate the client” • What will the model / data be used for?

• Who is responsible for what?

• What is beyond the scope of expected BIM production?

• More lead in time • Pre- and post-contract BIM Execution Plan

• Preparing the project data (esp. coordinates & data exchange)

• Training

COMMON FAILURES



THE REAL SOLUTIONS

• “BIM is not a competitive advantage over your

competition; delivering better projects is.”

• Strategy • Have a plan

• Avoid knee-jerk reactions

• Do not cut corners (time, cost, technology)

• Get educated • “Just because you don’t understand it,

doesn’t mean it makes no sense”



THE REAL SOLUTIONS

• Know your business • EIR / BEP / decisions based on business, not BIM

• What will the model / data be used for?

• Sensible programme

• Plan the time you need

• Right people leading • Not just a BIMvangelist

• Certainly not a “power user”

• Top-down, bottom-up

• Collaborate



THE REAL SOLUTIONS

• Level 1 BIM • Address common digital production standards

– Layers

– File naming

– Folder structures

• Processes & procedures

• Quality, validation & approval

• Level 2 BIM • Business as usual



“It is a mistake to think you can solve any

major problems just with potatoes.” DOUGLAS ADAMS

e [email protected]

@NigelPDavies

facebook.com/EvolveConsultancy

The Reality of Level 2 BIM · the practical implications of level 2 bim bim region south 11/11/2015...

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