BIM for Landscape Architecture

BIM for Landscape Architecture
IFC for Landscape - Example used in Revit

Wednesday, October 31, 2012

The Netherlands is the first country to have made CityGML a national standard.

…In this article, authors Jantien Stoter, Joris Goos and Athina Trakas describe CityGML and take a look at how National Spatial Data Infrastructure stakeholders in The Netherlands worked together to establish a national 3D standard that aligns to both the existing national 2D standards and the international OGC standard for 3D geoinformation, CityGML.

Adding a third dimension to the National Spatial Data Infrastructure (NSDI) makes a lot of sense in a heavily populated country where two-thirds of the land is vulnerable to flooding. The OGC City Geography Markup Language (CityGML) Encoding Standard is already in use in spatial data infrastructure programs in Germany, France, Malaysia, Abu Dhabi and other countries, where it provides an important platform for the transition from 2D to 3D data. The Netherlands, however, is the first country to have made CityGML a national standard.

In this article we describe CityGML and look at how NSDI stakeholders in The Netherlands worked together to establish a national 3D standard that aligns to both the existing national 2D standards and the international OGC standard for 3D geoinformation, CityGML.…

"3D Pilot NL"

…3D information is practice!

The presentations of Joris Goos of the City of Rotterdam and Thomas Kolbe, University of Berlin at the symposium, underlined that 3D is both required for many applications and feasible. Joris Goos explained why Rotterdam invested in 3D geo-information and concluded that it is not a matter of how much a 3D approach costs, but how much you can save with it. Also, Joris announced that as of June 16th the 3D data set of Rotterdam is open data, which provoked a loud applause from the audience.
Thomas Kolbe elaborated on CityGML. An important result of the pilot is a CityGML implementation profile for large scale geo-information in the Netherlands. Thomas Kolbe explained that CityGML is rich in semantics and therefore attractive for various applications. Inspiring was the live demo Thomas Kolbe gave on the solar atlas of Berlin ( Both the presentation of Joris Goos and of Thomas showed the importance of performing analysis on the 3D data. That is, 3D geo-information makes it easier to answer questions like: what are the best locations to generate solar and wind energy in the city? What is the effect of a new building on the environment? And how green is the city?…

Tuesday, October 30, 2012

Monday, October 29, 2012

Open source BIMserver

…What is CityGML and what about the extension for GeoBIM?
CityGML is a relatively young open standard for modelling cities. This standard originates in the geographic world (GIS). The GIS world is known for its 2D maps, but has recently started adding 3D objects. Agreements have been defined in CityGML about how roads, buildings, water, vegetation, green spaces and so on are described. Because this is documented for complete cities, the level of detail describing a building in CityGML is rather limited (not nearly as detailed as in IFC). However, it is possible to define expansion sets in CityGML. This makes it possible to add specific information to a CityGML model (for the nerds: comparable to Psets in IFC). The initiator of the GeoBIM extension is BIMserver open source. This CityGML extension for GeoBIM information enables IFC data to be added to the buildings in CityGML. The BIMserver software export to CityGML facility, adds the IFC information according to this official GeoBIM extension.…

…Is that all?
Another popular feature is clash detection on the (merged) IFC data and the option to ‘subscribe’ to changes in (part of) the model.
Other users very much appreciate the automatic up-to-date KML interface. This enables clients to monitor the project progress in Google Earth. The exports to CityGML, ifcXML, Collada (for Sketchup) are also very popular. The O3D/WebGL functionality enables you to inspect BIM models in your web browser without having special IFC software installed on your PC.
The more technical users are enthusiastic about the Query and filter options for the IFC data. Simple pre-programmed queries such as ‘give me the 2nd floor only’ or ‘give me all the windows’ are widely used.
But you can program more complex queries yourself, such as ‘give me all doors on the 3rd floor that are wider than 900 mm’ using the advanced query function.
The nerds among us consider the various interfaces (web user Interface, REST interface and SOAP) and working with an EMF framework wonderful.…

Friday, October 26, 2012

IFC for LARK – Eksempel brukt i Revit

Denne oversikten viser hvordan LARK kan benytte seg av eksisterende programvare og tilpasse den så godt som mulig til LARK sin måte å jobbe med 3D objektbasert modellering. Undertegnede har gjennomført ulike landskapsprosjekter i tidsrommet 2005 til i dag 2012 basert på Autodesk Revit som 3D modelleringsverktøy for prosjektering, tegningsproduksjon, mengdekontroll, kostnadsoverslag, utsettingsdata osv…… Denne oversikten prøver å ta de erfaringer man har fra gjennomførte prosjekter og de LIM objektene som vi nå har kommet frem til i denne rapporten og sette dette i system.

Denne oversikten viser at vi kan klare å levere mye Landskap mot IFC hvis vi nå i første omgang er villig til å forenkler LIM objektene og ser sammenhenger og muligheter i eksisterende programvare ment for andre fagdisipliner. På lengre sikt bør LIM objekter få sin egen IFC definisjon. Der det i denne oversikten kommer IfcBuildingElementProxy bør man kunne komme frem til egne IFC definisjoner i Norge som vi kan benytte her frem til vi får på plass en internasjonal IFC standard for Landskap.

Ved praktisk bruk av denne oversikten vil det komme frem mange viktige punkter som igjen er bra å ta med inn i et standardiseringsarbeid med tanke på IFC for LARK. Denne oversikten er kun ment som et første utkast basert på egne erfaringer og ønskes supplert av andre med tilsvarende erfaringer.


....Getting Inside

Although CityGML can be used to model building interiors, it isn’t sufficient to meet all the requirements of indoor navigation. To fill this gap, OGC membership recently formed a Standards Working Group to develop a new standard, IndoorGML.

From the perspective of IndoorGML, IFCs and CityGML can be considered as important data sources for the interior topography of buildings (and other structures such as tunnels).

IndoorGML will provide the essential model and data for important applications such as building evacuation, disaster management, personal indoor navigation, indoor robot navigation, indoor spatial awareness, indoor location-based services, and the tracking of people and goods. IndoorGML will support different travel modes, such as walking, driving and flying.

IndoorGML provides a framework for the flexible integration of different localization technologies (e.g., WiFi, RFID, LIDAR, etc.) and allows the ad-hoc selection of appropriate navigation data according to the capabilities of the mobile device and the offered localization technologies of a building.

Standards for bridging the indoor/outdoor location divide are on the critical path to navigation, machine-to-machine communication, smart grids, smart cities, smart buildings, smart pipes, sensor webs, BIM, location marketing and other exciting new domains of economic activity. Success in all these domains depends on the widespread and active collaboration of many different standards-development organizations. If your organization has a stake in these, we encourage you to become involved.