Collaboration par excellence

Example: Hasselt City Hall, Belgium — The building of the new municipal administration center in Hasselt, Belgium, demonstrates how seamless collaboration in building projects can minimize risks and save costs from the design phase all the way to commissioning.
A joint project of several brands of the Nemetschek Group.
Nemetschek brands involved: Allplan, GRAPHISOFT, Solibri

Pioneering planning and project execution with Open BIM

“The end-to-end use of BIM solutions constitutes genuine added value for all stakeholders in the building process
because it enables seamless and efficient collboration”

Steven Hendrickx, Head Architect in Hasselt

Large-scale, highly complex building projects in particular require ongoing, reliable and efficient coodination between all stakeholders – both internal and external – across disciplines and between companies. Therefore, in association with other market players, the Nemetschek Group is promoting the Open BIM data standard. This is a universal, collaborative approach to designing, constructing and operating buildings based on open standards and workflows It makes it possible for project stakeholders to collaborate, even if the type of software varies from user to user. The Industry Foundation Classes (IFC) interface has established itself as an open standard and is therefore of central significance.

Sharing and evaluating data throughout the entire product life cycle saves time and money and improves quality. The administration of data is key to this digital transformation, for it is only possible to take full advantage of the potential if each stakeholder can access the data that he or she needs at any given time. This begins with a realistic BIM building model, which is an essential prerequisite for a genuine 5D workflo. This model is no longer limited to just 3D construction data; it also includes data concerning the dimensions of time and costs.

Seamless collaboration exemplified by the Hasselt City Hall

Under the management of the architect team comprising Jaspers-Eyers, MASS Architects and Michel Janssen, a new municipal administration center is being built in Hasselt. The complex, consisting of a renovated building section and a new building, provides approx. 17,000 m2 for the city administration and social services as well as offices. The architects and their most important partners are using Open BIM software solutions for the entire construction process. Three Nemetschek solutions are being implemented for this project: Archicad from Graphisoft for the design and planning of the architects, Allplan Engineering for civil engineering, and the Solibri Model Checker for the BIM quality control carried out by the construction company.

From the beginning, all information concerning the building project is contained in the digital building model – from the draft to implementation – including all design details, desired materials, fire protection requirements, acoustic properties, insulation and building structures, and administration. This constitutes considerable added value for all stakeholders compared to the old standard model, which was purely 3D. Thus, this improvement ensures more than just seamless collaboration between all those involved. The complex project can be turned over to the municipality – the proud building owner – with the required quality, on time and within the specified budget.

Hasselt City Hall is groundbreaking – in terms of design, planning and project implementation.

Independent and yet consistent

Steven Hendrickx, the head architect in Hasselt, recognized four decisive factors with Open BIM over the course of the successful project:

  • Individual partners design their model with their preferred BIM software, and with their own templates. Outstanding collaboration is ensured, though, thanks to a common, uniform standard which is specified in advance.
  • The division of labor is defined at the beginning of the project. Data on statics, for instance, have an essential impact on the architecture and structural design. Data on heating, ventilation and air-conditioning, on the other hand, are also important but don’t generally flow directly into the architecture. These data, for example, can be sufficiently analyzed with the BIM solution for quality assurance from Solibri.
  • Design changes in one area don’t necessarily affect the plans of all the others involved in the project. The architecture and the building stage are inherently the most closely linked.
  • The expertise of the staff, i.e., extensive holistic knowledge of the various building disciplines, is also critical for the success of the project.

Two examples of the advantage of precise planning

In Hasselt, the construction company was commissioned with excavation, among other tasks. An assessment of the amount of sand that needed to be removed was done based on a cal culation using conventional 2D planning methods, which yielded a result of 800 cubic meters. The engineers used the Solibri Model Checker based on Open BIM and the data provided by the architects and arrived at a figue that was just half this amount, i.e., 400 cubic meters of sand. This shows how exact the work with Open BIM solutions can be.

The steel struts to be installed are another example: With the interface function IFC Exports from Allplan, it was possible to use the BIM model to automatically calculate which steel struts needed fieproofing. All it took was a mouse click to obtain precise results, right down to the running meter. In projects that don’t use Open BIM solutions, these calculations are made by manually entering the data from 2D drawings in Excel or some other software and then recalculating and evaluating the data for use in quotations and planning, a process that is susceptible to error and one that leaves a lot of room for interpretation. These errors often go undetected until the actual cost planning is already completed. In the case of the Hasselt City Hall,  it was possible to avoid such errors from the outset.

Converting to Open BIM pays off

As is the case with any change, it takes a certain amount of time for companies and employees to accept BIM as the norm. The best way, according to Steven Hendrickx, is to start out by planning smaller projects using BIM. The experience thereby gained will make it possible to complete successively larger BIM projects. The advantages of collaborating through Open BIM are obvious: The entire workflow is much simpler for all project stakeholders, and building projects are completed within time and cost budgets.

CONCLUSION

Consistent standards and open interfaces in par-ticular are essential for successful building projects. Stakeholders need solutions that can “work together” for all and any individual tasks being performed. Seamless collaboration between humans and machines: This is ensured with Open BIM, and backed by the brands of the Nemetschek Group.



Reference projects on this topic:

Overcoming BIMtimidation: Belgian General Contracting Firm MBG Makes the Leap to BIM

Nemetschek brand involved: Bluebeam

While Architecture, Engineering and Construction (AEC) professionals are rarely given proper credit for being innovative, the tech sector of the industry has grown so exponentially over the past decade that many new digital possibilities have emerged that can be overwhelming. This is especially true for small to midsize companies within AEC. The technological boom yields incredible advantages when implemented correctly, but that very implementation process raises so many questions that it can become a daunting predicament.

With the increase in Public-Private Partnerships (PPP), the impending UK BIM mandate, Brexit ramifications, and possible government standardizations, the choice of whether or not to use digital solutions is gradually being taken out of the hands of prime contractors on a global scale. Owners and government agencies are instead making the call, indicating that digital solutions are likely here to stay—but just how deep these digital solutions need to go remains to be seen. Project partners are seeing the benefits from increased communications efforts because of technology, and as the tide of BIM and Virtual Design and Construction keeps rising, getting pushed into the water might just be the best way for firms to learn how to swim.

Belgian firm MBG is doing just that, taking the BIM plunge for the first time on the Belgian Industrial CFE affiliate’s £105 million AZ Sint-Maarten Hospital project in Mechelen — hardly the ideal project on which to experiment. The public and privately funded nature of the project left the firm little room to negotiate on technology solutions. (This is not a full PPP project, but financially, private partners VZW Emmaus–AZ Sint-Maarten need to follow rules applicable to government instances because they benefit from the project’s subsidies.) “Our client made the decision to design this hospital in BIM,” says Project Manager Bens Bervoets. As the general contractor for the project, MBG was more than willing to adapt to the digital challenges head-on. “This is one of the first big projects here in Belgium being done in BIM format, with Revit creating a 3D model."

With a five-year build plan totaling nearly £303 million for the finished hospital, the wide-open possibilities of how technology would be implemented on such a grandiose project was the first obstacle to tackle. “We don’t have a standard here in Belgium yet for how to work with BIM—they are currently working on a European standard, but they haven’t finalized it,” says Bens. “For projects like this, there is a mountain of project information that has to be transferred to the right people at the right time. Modern technology can provide solutions for everyone to make their job more efficient.” In this case, the technology suite included Buzzsaw (project extranet), Aproplan, Revit, Tekla, Navisworks and Bluebeam Revu—all of which were new to MBG.

“I believe this software should be used like Word and Excel. I use Bluebeam every day!” – Bens Bervoets

Not Lost In Translation

As a project manager, Bens’ key challenges include ensuring the information from the complex BIM programs could be properly translated and sent to the field, as well as gaining project partner approval for all updated drawings. “Normally we would get some drawings from our contractors and subcontractors and we’d have to review them, which would require me to print the drawing and make all my remarks the old school way, on a table with all my drawings as colors,” explains Bens. “And then I’d have to go to our offices in Antwerp and scan them in A0 size. This is not a very complicated process, but it takes a lot of time.” Instead, Bens used Revu to translate the informational drawings and host the markups. “Now with Revu, I can make all my markups in the program digitally, send them to the subcontractors and suppliers, and they can easily send me their revisions in a PDF. We primarily use the annotations, hyperlinking and measurement tools. It’s a good program because not every contractor, and definitely not every subcontractor or smaller player on the project, has the BIM software or the right staff to work with it. So, especially with smaller subcontractors, we use Revu.”

If You Can Show It, They’ll Know It

The other component that eased MBG’s transition to BIM was the very device that showed the drawings. “We are using a big touch screen because it can show an A0-size drawing without zooming,” Bens declares. “That makes it an easier adjustment for workers who are used to checking drawings on the plotter paper.” Not only did MBG save money and time by not needing to print on plotter paper, but also project latency was practically eliminated between drawing approval and posting on the touch screen. Bens elaborates, “We use the screen for meetings with the foremen of subcontractors so that our site superintendents can easily discuss short-term planning, because you can take a floor map of, for example, level 2 of the building, and you can easily mark it up using Revu on the big screen. You can easily make markups with colors, and then we can save it on the project extranet [making it possible to carry the documents along on site using an iPad] or send it to them via email.”

On Track and Moving Ahead

Despite using BIM for the first time, MBG’s AZ Sint-Maarten Hospital project is moving full steam ahead and, more importantly, is right on schedule. Bens and his MBG team are happy to have taken on the challenge. “For this project, there were a lot of test cases coming together. We had the screen, and BIM and Bluebeam Revu, and I think these will become standard practices on our future jobs.”

Bens attributes information-sharing as the key to unlocking BIM’s potential within the built environment. He also believes that the industry as a whole would benefit from better communication. “We are living in a sharing economy now, especially because of social networks, and we’re in a sharing time in general. We are seeing this evolution in the construction industry in Belgium, and in the rest of Europe as well. A lot of discussions are happening between different companies, so I think the competition is more based on knowledge than on labor. Thirty or forty years ago, you were a top five contractor if you had 1,000-plus workers, and now you are a top ten contractor if you write the best solutions for your client. So there has been a shift in the construction industry from labor to knowledge-based competition.”