Delivering COBie data

ECPPM 201607/09 to 09/09 | Limassol, Cyprus

11th European Conference on Product and Process Modelling

eWork and eBusiness in Architecture, Engineering and Construction

Delivering COBie datafocus on curtain wall and building envelopes

Jan KarlshøjTechnical University of Denmark (DTU), Kongens Lyngby, Denmark

Paolo Borin, Michele Carradori, Michele Scotton, Carlo ZanchettaUniversity of Padova, Padova, Italy

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ECPPM 2016

07/09 to 09/09 | Limassol, Cyprus

Delivering COBie data - focus on curtain wall and building envelopes

J.Karlshøj, P. Borin, M. Carradori, M. Scotton, C. Zanchetta

Index

Subject of the researchState of the art

Getting COBie

IDM development

Conclusions

Future developments

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Subject of the researchBIM

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FacilityManage

rINFORMATION

EXCHANGE

Project lifecycle

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Subject of the research

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FacilityManage

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information exchange:MODEL VIEW DEFINITION

(MVD)

IFC BIM model(ISO16739:2013)

=COBie

Construction (to) Operations Buildinginformation exchange

curtain

walls*Project lifecycle

Production of hundred of papers and

files difficult to be used by

Facility Managers.

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State of the artNowadays, the delivery of

handover information is still based on paper documents and

PDF files.RESULTS

Information often available

monthsor years after occupancy.

Time wastedin recreating information

already specified during

the project.

Manual inclusion of information

in maintenance management

software.=we need something else!

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State of the art

COBieaims to be a unique container able to collect those pieces of information needed for FM,across the different project stages

can be delivered in electronic format (.ifc, .ifcxml, .xml)

standard, open and reusable data structure, based on the IFC schema.

it is a MVD since it represents a subset of the entire IFC data set.

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State of the artCOBie’s data structure

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State of the art

Two different behaviours can be internationally recognized:

all the equipments that need preventive maintenance plan, have consumable parts and require management and regular inspections,

are supposed to be included in COBie.(as stated by Bill East, original developer of COBie)

COBie’s content:

U.S.A.NBIMS-US v.3 - Chapter 2.4

July 2013, National BIM Standard

U.K.BS 1192-4:2014Sep. 2014, British Standard Institute

........................……………………..IfcCurtainWallIfcPlateIfcMember……………………..……………………..

IFC entities

exclusion list

COBie for all(in UK COBie is

mandatory for allcentral procured

project since April 2016)

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State of the art

This research focusedon the UK scenario,

since:

• the UK Goverment’s initiatives could become a framework for the European States which do not yet submit a BIM policy;

• the importance of the UK construction business in Europe, especially regarding private housing and commercial, where curtain walls are commonly used;

Moreover, curtain walls are products that typically require to be maintained during the project life-cycle:

it could be useful tocheck COBie against passive

products!

How to obtain COBie?

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Getting COBie

Curtain wallBIM model

Create withAutodesk Revit

2014

COBie.xml

- The data format for COBie required by the UK Government

- It is just a mapping of the COBie MVD: the information content is the same.

direct exportationthrough an internal plug-in

indirect exportation

via IFC + external app.

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Getting COBie

Curtain wallBIM model unitized

curtain walling system=

Pre-assembled curtain cells,composed by sub-elements,which are installed on site.

stickcurtain walling system

=All the elements are installed on

site.

Curtain panels(IfcPlate)

Curtain mullions

(IfcMember)

Curtain cellsub-elements

Curtain cell(IfcPlate)

Curtain system(IfcCurtainWall)=

Curtain system(IfcCurtainWall)

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Getting COBie


COBie.xml

direct exportationCOBie Extension

for Revit

indirect exportationvia IFC + external app.

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Non-collaborative procedure based on COBie .xml: there could be several

issue in aligning information produced by the different stakeholders.

Automatic exportation of all the information included in the model, relating to Contact,

Facility, Floor, Space, Zone, Type, Component, System, Attribute and

Coordinate worksheets.

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Getting COBie


COBie.xml

direct exportationCOBie Extension for Revit

exporting the model

in IFC format

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It is not possible to choose COBie as MVD

in Revitwhile exporting in IFC

format;the Extended FM

handover View was used, but it is not

approved by buildingSMART

International, therefore not stable.

transforming the IFC modelin

COBie .xml

Issues in the definition of mullions (naming and

Type association), because of the IFC Exporter of Revit.

Results:Cobie Toolkit, BimService.

Chanche to modify the exclusion list introduced by

the US COBie spec.

No results:BIMserver, BimService

(old version).No chanche to modify the

exclusion list introduced by the US COBie specification.

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Getting COBie

COBie.xml

direct exportationCOBie Extension

for Revitindirect exportation

via IFC + external app.

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Spare Resource Job Docume

nt

Revit, as a design software, is not able to handle information that are typically exchanged during the construction phase.

Impact Connection

Assembly Issue Coordina

te System

Type√

Component√

Attribute√

What is modeled as a family type in Revit, is also exported as a Type in COBie. All the attributes included in the model can be associated to the relevant COBie cell.

Optional content (BS 1192-4)

Content expected not exactly defined

Project-specific indications required

Same results!Results evaluated considering the specific stakeholder and producton which this research focused (and the related COBie worksheets).

:

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IDM developmentIndustry Foundation Classes

IFC:establishes the language

Model View Definition

MVD:selects words and syntax constructions for a certain

purposeInformation Delivery Manual

IDM:defines how the speech occurs

Objective:define a standardized

methodology for existing or new processes, in order

to assist the different stakeholders in their tasks

=

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IDM developmentIDMs based on the approach described by Mondrup, Treldal, Karlshøj,

Vestergaard (2014):it is possible to define IDM packages that specify the

information exchanges that occur at a specific life-cycle stage involving specific actors of the processA B

ACobie-related life-cycle

stages, taken from the BIM task Group (UK)

BActors’ roles taken from the

British regulation BS1192:2007

IDM 1COBie Data Drop 3 - Specialist DesignerIDM 2COBie Data Drop 4 - Subcontractor

Re-definition of the existing COBie IDM (NBIMS-US v.3) in consideration of:- BS 1192-4 and Uniclass;

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IDM developmentIDM components:

Business

Use Case

ProcessMap

ExchangeRequirements

ExchangeRequirement

Models

Textual description of the analyzed process

Graphic translation of the

Business Use Case

Description of the information to be exchanged (who, when and what)

technical specification ofthe Exchange

Requirement (needed to develop a MVD)

Out of the boundaries

of this research

The COBie Responsibility Matrix(projects.buildingsmartalliance.org) allows to link:

COBie Exchange Requirements COBie .xml cells

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IDM developmentMain problem: what should be considered

manageable assets?

premise:curtain

wallcomplexi

ty

Ontological complexity

of the considered product

• Design information, at various stages

• Construction information• Operation & Maintenance

information• Manufacturing-based information

Huge variability of elements

if dimensions are considered

The entire curtain wall can be seen• as unique object;• as an assembly composed by several

subsystems (cells);• as an association of single elements. E.g. in buildings like skyscrapers the hundreds of panels that constitutes the facade could seem the same panel repeated for hundreds of times, but they often differs for dimensions.

Different sourcesof information

Interferences withother disciplines

componentsTypical electrical and mechanical systems

COBie Assembly

specifies the elements Type included in a cell

Type 19

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IDM developmentMain problem: what should be considered

manageable assets?• No project-specific

indications• No stable practice on

COBie• Curtain wall complexity

chosen criteria:

Every element:• which needs specific

maintenance operations• for which replacement parts are

provided• that requires to be specified by

additional documents• that requires to be specifically

described by those properties expected by the Type worksheet (e.g. warranty information)Every curtain wall cell*

is described by a specific

COBie Type(regardless dimensions)is exported as aCOBie

Component

*In the general case where curtain walls are not subdivided in cells, each element must be

exported as a Component too.

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IDM developmentResult: Exchange Requirement example

The ERs used by the COBie specification included in NBIMS-US v.3 were used.

Sub-ERs related to the COBie worksheets were defined.

The specific IFC entity which compiles a precise COBie cell (taken from the COBie MVD).

Information to be exchanged is defined

in relation to the COBie columns.

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Conclusionsimpossibility to reach the

actual objective:exchange of the entire set of

informationneeded for Facility Management

The best solution if the purpose is just deliver COBie data in .xml format, in order to fulfil a contractual requirement:- Easy to use;- No additional

application needed: all happens within the Revit environment

Considered scenario:

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ConclusionsHopeful scenario:

using IFC is the only way to enable

interoperability between the

different actors

A MVD for Facility Management which clearly

defines the content of the exchange and standardizes data

flow (also for curtain walls) is strongly needed.

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Future developments

Consideration on how BIM tools translate in IFC format the complex relations that charachterize curtain walls. Application of the developed IDMs to different case studies, in order to verify the validity of the proposal.

A

B

ECPPM 201607/09 to 09/09 | Limassol, Cyprus

11th European Conference on Product and Process Modelling

eWork and eBusiness in Architecture, Engineering and Construction

Delivering COBie data - focus on curtain wall and building envelopesJan KarlshøjTechnical University of Denmark (DTU), Kongens Lyngby, Denmark

Paolo Borin, Michele Carradori, Michele Scotton, Carlo ZanchettaUniversity of Padova, Padova, Italy

Thank you for attention

Education

Delivering COBie data