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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
Digital planen. Effizient bauen. Nachhaltig betreiben. 3
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
Digital planen. Effizient bauen. Nachhaltig betreiben. 4
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
Digital planen. Effizient bauen. Nachhaltig betreiben. 5
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
Digital planen. Effizient bauen. Nachhaltig betreiben. 6
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
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, …
Digital planen. Effizient bauen. Nachhaltig betreiben. 7
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)
Digital planen. Effizient bauen. Nachhaltig betreiben. 8
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
Digital planen. Effizient bauen. Nachhaltig betreiben. 9
• 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
Digital planen. Effizient bauen. Nachhaltig betreiben. 10
Concept for prototype software client
Digital applicationform
Messages
IFC model / land-use plan
Check results
Deviations,obligations
IFC
Service
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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?
Digital planen. Effizient bauen. Nachhaltig betreiben. 12
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)
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Example project: Hafencity, Hamburg
Building NORTH (IFC model)
Building SOUTH (IFC model)
Land-use plan (XPlanung)
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BIM-based building application: Modeling guideline
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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
▪ …
Digital planen. Effizient bauen. Nachhaltig betreiben. 16
BIM-based building application: Feedback from interest groups (associations)
Digital planen. Effizient bauen. Nachhaltig betreiben. 17
Prototype software: Visualization of land-use plans (XPlanung)
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Prototype software: Extraction of permissible building envelopes
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Prototype software: Visualization of land-use plans (XPlanung) and BIM models
Digital planen. Effizient bauen. Nachhaltig betreiben. 20
Prototype software: Verification of prescribed distances
▪ Calculation of minimum distances to neighboring sites
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Prototype software: Deduction of quantities from spaces
Ancillary facilities, e.g. playgroundsParking spaces and building accesses
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Prototype software: Data extraction from BIM model into digital building application form
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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
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Prototype software
▪ Demo of the prototype software…
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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)
Digital planen. Effizient bauen. Nachhaltig betreiben. 26
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]