Germany: BIM-based building application · XPlanung is an open XML-based data exchange format for geodata in spatial planning (urban land-use planning, regional planning, landscape

Gesellschaft zur Digitalisierung des Planens, Bauens und Betreibens mbH

Germany:

BIM-based building application

Michael Theiler20th February 2020

BIM-based building permit process automation seminar, Tallinn

Digital planen. Effizient bauen. Nachhaltig betreiben. 2

Funding project in the course of

planen-bauen 4.0 GmbHRuhr-Universität BochumStadt Hamburg / Landesbetrieb Geoinfo. und VermessungStadt Dortmund / Land Nordrhein-WestfalenBundesarchitektenkammerBundesingenieurkammerBund der öffentlich bestellter VermessungsingenieureBundesvereinigung der PrüfingenieureVerband Beratender IngenieureHauptverband der Deutschen Bauindustrie

Duration 2018 - 2020

Project partners

Concept for the seamless integration of Building Information Modeling (BIM) into the official building application process

Central coordination department for maintenance and development of the standards XPlanung and XBau

BIM-based building application


XPlanung

▪ XPlanung is an open XML-based data exchange format for geodata in spatial planning

(urban land-use planning, regional planning, landscape planning and other planning)

▪ Based on Geography Markup Language Version 3 (GML 3.2.1)

Image Source: Dr.-Ing. Kai-Uwe

Krause, Geoinformation und

Vermessung, Stadt Hamburg

Authorities

General public

Neighboringcommunities

Planning offices

Real estateindustry

Other publicinterest entities


Example: City of Hamburg

▪ Participation platform for

the urban land-use

planning procedure for

citizens

▪ Detailed information on

the determination of a

land-use plan based on

XPlanung

Image Source: Dr.-Ing. Kai-Uwe Krause, Geoinformation und Vermessung, Stadt Hamburg


XBau

▪ XBau is an open XML-based data exchange format for electronic data transmission in building

supervision procedures

▪ Message-based format, building application is one of many message types

▪ Standardized communication between building owners, architects, authorities, test engineers, …

Grrr! Yeah!

Image Source: Dr.-Ing. Kai-Uwe Krause,

Geoinformation und Vermessung, Stadt

Hamburg


XBau: Building application message

▪ Contains metadata about the

building project, involved

persons, location, …

▪ In the attachment, digital models

can also be included

Open questions:

▪ How must models look like?

▪ Which information must be

contained?

▪ How can models be used for

(semi-)automated checks,

e.g. by test engineers?

▪ How can model-based

communication be included?

Building application

Date / Sender / Recipient

Who?

What?

Where?

Attachments

Persons

Data about

Building owner

Architect

Specialist planners

Representatives

Name

Address

E-Mail

Telephone

Type of action

Type of building

Type of use

Building site

Location on the site

Localisation in the real estate cadastre

Address

Documents, digital models, …


Key topics of the funding project

▪ Identification of requirements to BIM models in the

course of building application

▪ Testing of the (semi-)automated checking of BIM-

based building applications on selected topics

▪ Integration and testing of open data formats

(XPlanung, XBau, IFC, BCF)

▪ Prototype software implementation for verification

of the BIM-based approach

▪ Evaluation of additional expenditures or saving

potentials for people involved in the building

application process

▪ Validation on example projects

(HafenCity, Hamburg / Phoenixsee, Dortmund)


Step 1: The DIGITAL building application

Service

Manual input of

the form data

Preparation of

the permit

planning

Submission of the digital

building application

Architect imports

initial data

If necessary, addition or

correction of the site plan

by surveyors

Provision of

land-use plans

• Subject-related check

• Exchange of messages


• Subject-related check

• Exchange of messages

Step 2: The BIM-BASED building application

Service

Formular data can be

extracted automatically

Preparation

Permit model

Architect imports

initial data

Provision of

land-use plans

IFC

IFC

IFC

IFC

Support through

rule-based checking

If necessary, addition or

correction of the site plan

by surveyors

Submission of the BIM-based

building application


Concept for prototype software client

Digital applicationform

Messages

IFC model / land-use plan

Check results

Deviations,obligations

IFC

Service


Checks regarding planning law (extract)

Area designation Does the use fit in with the designation of the area?Is an exemption application necessary?

Boundaries Are the structures located in the construction sites?How large is the respective excess (length and depth)?Is an exemption application necessary?

Floor area Is the permissible floor area adhered to?How large is the excess?Is an exemption application necessary?

Storeyedness Is the permissible number of full floors being adhered to?How large is the excess?Is an exemption application necessary?

Building height Are the permissible building heights observed?How large is the excess?Is an exemption application necessary?


Building classification Height of the upper edge of the floor of the highest storey?

Special structuralclearance

High-rise building, height of upper floor edge of the highest floor < 22 m? Retail outlets, areas of retail space < 800 m²?Restaurant, gastronomy area?

Distances Are there any distance violations?How large (depth) is the undercut?Is a deviation application necessary?

Garage type Useful area of the underground car park > 1000 m²?

Playarea for children Is the required size of the children's play area adhered to?How is the children's play area equipped?Is the minimum size of 100 m² observed?

Checks regarding the building code (extract)


Example project: Hafencity, Hamburg

Building NORTH (IFC model)

Building SOUTH (IFC model)

Land-use plan (XPlanung)


BIM-based building application: Modeling guideline


BIM-based building application: Modeling guideline

Contents

▪ General information on the

building project

▪ Georeferencing

▪ Modeling of site, building

and storeys

▪ Gross and net areas

▪ Units of use

▪ Sealed areas

▪ Parking spaces and

building accesses

▪ …


BIM-based building application: Feedback from interest groups (associations)


Prototype software: Visualization of land-use plans (XPlanung)


Prototype software: Extraction of permissible building envelopes


Prototype software: Visualization of land-use plans (XPlanung) and BIM models


Prototype software: Verification of prescribed distances

▪ Calculation of minimum distances to neighboring sites


Prototype software: Deduction of quantities from spaces

Ancillary facilities, e.g. playgroundsParking spaces and building accesses


Prototype software: Data extraction from BIM model into digital building application form


Prototype software: Model-based request for deviation

▪ BCF-based workflow for creating requests for

deviations

▪ Returning to the original model view

▪ Selection and display of relevant objects

▪ Comment and sketch functionality


Prototype software

▪ Demo of the prototype software…


Outlook

▪ Completion of the modelling guideline and a final report

▪ Provision of machine-readable property set definitions (psdXML/ifcXML)

▪ Provision of machine-readable mvdXML file for validation of the property sets

▪ Demo projects, …

Plans for a follow-up project

▪ Digitalization of the German Musterbauordnung (MBO)

▪ 1st step: Preparation of the MBO in a form that can be understand by computer scientists,

e.g. by providing UML sequence diagrams, …

▪ 2nd step: Specification of a neutral rule language,

which can be used as a basis for software vendors to create model checkers

▪ 3rd step: Translation of the MBO in the neutral rule language

▪ Searching for German project partners and European project partners (2nd step)


Michael Theiler | Project managerplanen-bauen 4.0Gesellschaft zur Digitalisierung des Planens, Bauens und Betreibens mbH

Office WeimarCoudraystraße 499423 Weimar

Office Berlin | HeadquarterGeneststraße 5 / Aufgang A10829 Berlin

E-Mail: [email protected]