This is the blog page for bimsync. Here we publish articles related to development and use of bimync. For the actual webapp click the button below:
The EU commission has financed a 3-year research project called DuraArk. Catenda is the Norwegian partner.
DuraArk — short for Durable Architecture — is about long term storage of architectural information. Architectual information can be a 3D point cloud of a building or a BIM (Building Information Model) of the building. In addition to the geometry we want to store other relevant information about the building using semantic technology (buildingSmart Data Dictionary; bsDD/IFD and semantic web). The target group is both those interested in preservation of building information and the construction industry. It is easier to plan a high quality restoration or repurposing of a building with this information available.
The consortium consists of a very interesting mix of organizations and competencies. There are people there with deep knowledge of 3D analysis, of long term archival, of semantic technologies, of Building Information Modeling, and of the current practice patterns of practitioners in the industry.
Catendas main role in the project is related to System specification and integration, Semantic metadata management and enrichment, and Data acquisition, evaluation and testing.
Read more about DuraArk here
Optima Kompetanse and Catenda will arrange a Green BIM course in collaboration with the EU project named GreenConServe. Experts from the >University of Life Sciences and from SINTEF Building and Infrastructure will give concrete advice on green BIM. More in Norwegian.
The upcoming version of bimserver will bring many improvements over the existing 1.0 release. While many of the improvements are bug-fixes and optimization there are also a range of new features introduced. Catenda has been following the project for quite some while as we develop most of our tools on top of the latest development of bimserver. We are very exited about the changes and have great expertiaion for the project. There have been many changes and improvements since version 1.0. Some of the major changes are:
Removal of major bottlenecks
Bimserver now uses internal streaming rather than the creation of temporary files for parsing by the geometry kernel. This was one of the biggest performance bottlenecks in version 1.0.
Gives you access to plugins and the EMF core from a client. As a result this gives you the same advanced possibilities on the client as you had on the server in version 1.0.
New protocol buffer interface.
In addition to SOAP and REST bimserver now supports Protocol buffers. This will bring a great deal of speed increase in the communication between bimserver and clients as it replaces encoded XML and SOAP messages with a more light-weigh binary format. There is a figure of the communication interfaces of bimserver at the bimserver wiki.
A new lazy loading feature delays the in-memory instantiation of data from the database until it is needed. This keeps the initial and overall memory footprint on the server side small since only data that has to be operated upon has to be loaded.
Automatic unit conversion
Allows for correct mering of models even when different units is used in the sub-models. The merged model follows the unit conversion for the project while each unit setting is preserved in the original file. This did already exist in version 1.0 but is improved in the new version.
Caching of models and queries
Revision og models are now cashed on server for faster retrival. This speeds things up quite a bit in a mulitiuser environment where several people need to download a merged model or revision to their own machine.
Much improved plugin structure
Bimsever has made it much easier to create plugins to the platform by seperation the core functionality from the server itself. There are already several plugins being developed like a COBIe plugin, several webGL viwers (as the threeJS viewer partly developed by Catenda), an upcoming IFD tagger (also by Catenda) that saves semantic information from IFD onto IFC models etc.
All in all bimserver 1.1 will is a completely revamped version of bimserver and could easily deserve a larger version number to better reflect all the improvements made. Catenda has been using the new server for our product development and are very pleased with the improvements. We are therefore confident to offer a complete setup and maintenance for anyone interested in using the new version for their projects.
For anyone interested in a more deep insight into the latest development I recommend reading the paper “ADVANCES IN THE DEVELOPMENT AND APPLICATION OF AN OPEN SOURCE MODEL SERVER FOR BUILDING INFORMATION” by Jakob Beetz, Léon van Berlo, Ruben de Laat and Peter Bonsma.
Good article on the confusion between the various standard specifications from buildingSMART and the implementations of it. Somebody seems to think that e.g IFC is not rich enough to carry data between applications. That is not true.
As a Ubuntu user I’m not spoiled with good IFC viewers. To be honest there are hardly anyone out there. One decent alternative is the Solibri Model Viewer downloadable from here: http://www.solibri.com/solibri-model-viewer.html For a long time I was using the viewer happily on my 32 bit notebook but when I upgradet to a 64bit version of Ubuntu, the joy was suddenly over. I could no longer get the viewer to start. It stopped with the message “Unable to launch the application”.
After a bit of fiddling with various Java settings and versions I digged into the “SolibriModelViewer_LargeModels.jnlp” file where I found this section:
<resources os="Linux" arch="i386"> <extension href="http://download.java.net/media/java3d/ webstart/release/java3d-latest.jnlp"/> </resources>
<resources os="Linux"> <extension href="http://download.java.net/media/java3d/ webstart/release/java3d-latest.jnlp"/></resources>
For the moment I’m using “Sun Java 6 web start” to launch the application. I have not been able to get it working using “OpenJDK 6 web start” yet.
The Norwegiean Defence Estate Agency (NDEA) and buildingSMART Norway just won the Information Technology equivalent to the Oscars! They took home the “Green IT” award. We congratulate them many times! This is well deserved. Knud Mohn of NDEA has worked hard to emphasize the green advantages of buildingSMART technology over the last few years, it is about time that this view is recognized.
Catenda has been part of the technology development in buildingSMART Norway and buildingSMART International since 1999. We are proud to be part of this, and our tagline at catenda.no, shows us why we do it. Great to have it recognized in this way!
Joint and Catenda offer a BIM starter service. Collaboration is central to any construction project, with or without BIM. With BIM that is even more true. It is important to stay synchronized with the rest of the team.
Joint are excellent at providing good collaboration tools, while Catenda has the BIM and buildingSMART expertise. With it’s eRoom platform, JOINT can together with Catenda offer a complete getting started with BIM package. It will offer organizations that want to get started with BIM, a low risk entry. Together with JOINT, Catenda will make sure that every step taken will lead to increased value for the customer.
We can also add to the great suite of collaboration tools that JOINT offers, our own, small and agile, specialized buildingSMART and BIM tools. They are simple to use, and add value from day one.
I forbindelse med kommende produktlanseringer, vurderer Catenda å hente kapital for å skalere opp virksomheten nasjonalt og internasjonalt, se forøvrig artikkel i Finansavisen 10/11-2010
En fullstendig versjon av artikkelen kan lastes ned her.