Geo and BIM does not make a GeoBIM

The EuroSDR GeoBIM project

Objectives

Investigating the state of play of GeoBIM in Europe

The use cases:

Use case 1- Building permission automatic issuing

Use case 2- life cycle support in asset management

Conclusions and Discussion

Overview

National Mapping and Cadastral Agencies (NMAs)

Universities

Present development – the EuroSDR GeoBIM project

EuroSDR

GeoBIM

project

Objectives

State of play

Use case 1

Use case 2

Conclusions &

Discussion

https://3d.bk.tudelft.nl/projects/eurosdr-geobim/

2017-2019 Partners

EuroSDR – research association of

European National Mapping and

Cadastral Agencies (NMCAs)

Objectives

Developing a coherent approach to GeoBIM integration

- with consensus between multiple stake-holders from both the Geo and the BIM side.

- at international level (share national experiences)

Join efforts to improve the state-of-art

Develop initial solutions for better integration:

best practice

for Geo-data in BIM processes and software

And

for BIM data in Geo-data processes and software

Use data from practice, and not “academic” and “clean” IFC models

(modelled as expected, without errors).

Point of view of 2 use cases

EuroSDR

GeoBIM

project

Objectives

State of play

Use case 1

Use case 2

Discussion

Investigating the State of Play of GeoBIM Across Europe

Questionnaire – Current Status, Awareness and

Activities • Mixed picture in terms of awareness

• Most countries see added value of linking Geo-BIM (research

or governmental programmes)

• Fragmented picture in terms of activities – very little

centralised GeoBIM integration strategy work at national level

• More work being done at project/company level

Non-Technical Challenges:

•Lack of GeoBIM Awareness and Knowledge

•Lack of Investment

•Disciplinary Divide: Geographers, Architects, Engineers

Technical Challenges:

•Lack of Software to support both BIM and Geo

•Lack of Standards

•Different Conceptual Models

•Interoperability Challenges

•Lack of BIM Data Sources

Ellul, C., Stoter, J., Harrie, L., Shariat, M., Behan, A., & Pla, M.

(2018). INVESTIGATING THE STATE OF PLAY OF GEOBIM

ACROSS EUROPE. Int. Arch. of the Photogrammetry, Remote

Sensing & Spatial Information Sciences, 42.

Limited awareness

A few small initiatives

Ongoing activity at

regional/national level

National level strategic activity

Used standards:

EuroSDR

GeoBIM

project

Objectives

State of

play

Use case 1

Use case 2

Conclusions &

Discussion

Use cases

EuroSDR

GeoBIM

project

Objectives

State of play

Use case 1

Use case 2

Conclusions &

Discussion

- Analysis of current practice

- Analysis of where current practice can be improved w.r.t. automation using a

combined Geo and BIM approach

- Specifying geo- and BIM data needs in order to (partly) automate the building permit

process / support the life cycle asset management

- Experiments to show the improvements

• with respect to semantics

• with respect to geometry

• with respect to georeferencing

• with respect to accuracy

• with respect to LoD

Use case 1 – From global design to building permission

issuing

EuroSDR

GeoBIM

project

Objectives

State of play

Use case

1

Use case 2

Conclusions &

Discussion

UC1: From global design to building permission issuing

Sweden

Smart Built Environment (many funds):

industry, construction, GeoBIM

National Board of Housing - automation of

building permits

(builders, government, maintenance)

BIM from first application, final design, as built

Tests in northern Sweden using CoClass

(national standard) and IFC (e.g. toilet size for

wheelchair use)

New project with building permits

The Netherlands

Kadaster and municipalities working

for automating building permissions

with (geo)BIM

France

Simulation of urbanism rules

Started project (CityGML, building exterior)

SimPLU web tool provides error (warning) report

Sponsored FutureCityPilot

working group for national 3D geodata standard

UK

Submission of 2D PDF

Work on Urban planning

and BIM Poland

Paper documents, 2D

National Experiences

overview

Ireland

Paper documents, 2D

Students doing work to

automate regulations (e.g.

fire regulations implemented

as Revit templates,

accessibility rules

implemented with Dynamo)

Finland

Upload of BIM available, not

mandatory for small projects

3 checks: BIM only, manual, BIM+Geo

60% of municipalities have joined

common online service for building

permit applications and bigger

municipalities have their own systems

Denmark

Web interface, BIM not used

Designing a national 3D city model

(assessing if useful, what use

cases, what LOD).

EuroSDR

GeoBIM

project

Objectives

State of play

Use case

1

Use case 2

Conclusions &

Discussion

UC1: From global design to building permission issuing

Workflow

proposal City Regulations

3D city model

Validation

of

Geometry

Georef.

Semantics

Conversion

to CityGML Regulations

check for

building

permission

Building

permission issued

And

3D city model

updated

Read as

reference and

building

design

EuroSDR

GeoBIM

project

Objectives

State of play

Use case

1

Use case 2

Conclusions &

Discussion

UC1: From global design to building permission issuing

Workflow

proposal City Regulations

3D city model

Read as

reference and

building

design

Validation

of

Geometry

Georef.

Semantics

Conversion

to CityGML Regulations

check for

building

permission

Building

permission issued

And

3D city model

updated

Compliancy not

checked

/

Eventual refinement

or changes during

construction

EuroSDR

GeoBIM

project

Objectives

State of play

Use case

1

Use case 2

Conclusions &

Discussion

UC1: From global design to building permission issuing

Research

questions

and next

steps

Select regulations that benefit from GeoBIM integration

e.g. Right of sun; Shading; Zoning; Maximum height; Fire (distance to hydrants,

roads, evacuation areas)

Based on these:

• Distinguish between different types of buildings?

• Distinguish between new building or changing buildings?

• Metadata issue

• Accuracy issue

• Georeferencing issue

• Level of detail issue

• Level of development issue

On-going interviews and collaborations with Municipalities and involved stakeholders to

answer these

(Cities of Den Haag, Rotterdam, Almere)

EuroSDR

GeoBIM

project

Objectives

State of play

Use case

1

Use case 2

Conclusions &

Discussion

Case studies from

practise: Netherlands (Rotterdam)

Ireland

France

Use case 2 – Life-cycle support in asset management EuroSDR

GeoBIM

project

Objectives

State of play

Use case 1

Use case

2

Conclusions &

Discussion

Sweden

On-going projects

Interaction with

Product Life Cycle support (PLCS)

standard ISO 10303-239

UK

UK

PAS (Publically

Accessible Standard) for

build and operation

phases - asset

management

Large infrastructure

projects

Management = operation

and maintenance during

life cycle of project

National Experiences

overview

Use case 2 – Life-cycle support in asset management

EuroSDR

GeoBIM

project

Objectives

State of play

Use case 1

Use case

2

Conclusions &

Discussion

Workflow draft:

Need to employ PLCS standard

Still preliminary questions:

• What data asset managers need?

• Can be geoinformation the link between different asset managers?

• …

Conclusions

Common requirements enabling the interoperability: • Valid Geometry

• Valid topology

• Valid Georeferencing

• Standardised and complete semantics

Common Issues: • Software

• Georeferencing and CRS (especially for BIM/IFC)

• Standard versions

• problems with large datasets

Issues linked to the use case 1:

Many different institutions giving different permissions

Regulations have to be translated into digital (spatial) format

Need to promote the solution finding benefits for stakeholders to comply to standards:

• We can then accelerate the planning process and permission issuing

• Enhance objectivity in the evaluations

Specific tools / guidelines are needed

(https://3d.bk.tudelft.nl/projects/geobim/)

EuroSDR

GeoBIM

project

Objectives

State of play

Use case 1

Use case 2

Conclusion

&

Discussion

EuroSDR

GeoBIM

project

Objectives

State of play

Use case 1

Use case 2

Conclusion

&

Discussion

Task 1.

Task 3.

Task 2.

Datasets and materials will be

provided for the tests

Anyone can participate testing one

(or more) tools

The results will be analysed,

synthesised and shared

Website, meetings, winter school,

publications

GeoBIM benchmark: reference study on

software support for open standards of city and

building models

Task 4.

2019 Submitted as ISPRS

Scientific Initiative Aim:

Test software and tools support for open standards (IFC and

CityGML) with common datasets and criteria to provide a

reference, best practices and guidelines for anyone working

with them

Questions and discussion

EuroSDR

GeoBIM

project

Objectives

State of play

Use case 1

Use case 2

Conclusion

&

Discussion