Where our work makes a difference

A growing 3D model is not yet a simulation. An example: The schedule says: “Day 10: install column.” A visualisation shows the column on day 10. A simulation checks whether that is possible at all. Using this one column as an example, the slides show the difference and why it matters for your tender. How can you tell from a bid whether durations are calculated or merely assumed?

Every sub-process is plausible. And yet the construction sequence does not fit into the track possession. Usually this is not down to unknown risks but to five recurring mistakes: 1. Logistics, transport routes and site areas are underestimated. 2. Dependencies between trades are missing from the plan. 3. Productivity assumptions are too optimistic. 4. The chain of activities ends at “installation complete” instead of at the start of operation. 5. Disruptions are not part of the plan. The first point is the one most often underestimated. A conventional schedule shows well when something happens. Where, with which equipment and alongside whom, it hardly shows at all. That is exactly where problems build up. As in one of our simulated bridge renewals, where demolition, lifting-in and launching had to fit into a 55-hour track possession. The excavator could not reach its working area and had to be relocated. That made the transport routes longer, additional trucks became necessary, and they backed up at a bottleneck. Every fix triggered a new conflict. The simulation made this chain visible in advance, before the line was closed. On site, the possession held. Logistics is only one of the five pitfalls. Which one cost you the most time on your last project?

Two days of InnoTrans done, two still to go. Packed halls, great conversations and quite a few new acquaintances at our simulation stand in the Mission Room with Rhomberg Sersa Rail Group — we are heading into the second half in top spirits. Want to drop by? 📍 Hall 25, Stand 430 #Innotrans2026

In a few minutes Jonas Wolpold will be a guest at DB mindbox, talking with Till Hetzer about our work with Deutsche Bahn and how our simulation already feeds into real planning and construction processes today. At InnoTrans today? Tune in!

From tomorrow we are at InnoTrans — Hall 25, Stand 430, with Rhomberg Sersa Rail Group. What sets our contribution apart: we are not another BIM tool and we do not replace your construction planning — we deliver the basis for decisions on it. For owners and clients: we show how you can spot, before the tender, where a project could stall later on. For contractors: we show how your construction sequence can be simulated so that change orders and schedule delays never arise in the first place. And for everyone else: we simply show what a construction site looks like when it has been run through virtually before ground is broken. 💬 We look forward to talking with you.

Simulating construction sequences before anything is built. That is what we do at BII. Sometimes, though, it does not start on paper but in the middle of a running project. On the Koralm Tunnel — at 32.9 kilometers the longest railway tunnel operated in Austria — our Construction Management team, together with Rhomberg Sersa Rail Group, kept a major site that had already stalled stable: no further schedule slippage, and coordination possible 100% remotely. We are now at InnoTrans together: 📍 Hall 25, Stand 430. Drop by and we will tell you how it worked in detail.

The most common reasons construction projects go off the rails are rarely real surprises: change orders due to unclear interfaces, schedule delays due to overlooked dependencies, misunderstandings between many parties. That is exactly where we come in: with simulation we de-risk construction projects before they get expensive. On average we identify 5 to 10 critical conflicts per project before they show up on site. We have already supported more than 250 construction projects with a total volume of over €12 billion this way. At InnoTrans we are showing this together with Rhomberg Sersa Rail Group on a concrete example project. 📍 Hall 25, Stand 430

What does a Process Engineer at BII actually do? Short answer: understand, question and simulate construction sequences. A bit longer: our Process Engineers work with owners and project managers on real construction projects. They deal with cycle times, resources, logistics and the question: does the planned construction sequence really work the way we imagine? To do this they use our own simulation software #dProB and turn plans into a model in which different scenarios can be played through. For our growing team we are now looking for more Process Engineers who enjoy construction planning, technology, client projects and quite a lot of creative freedom. Whether your background is classic civil engineering or you come to us by another route does not really matter. 📍 Würzburg, Biberach or remote 💼 Full-time, working student or individually by arrangement. Curious? Get in touch! 💬

🏃🏃‍♀️ Dynamic in software development. Dynamic on the running track. Writing code, moving projects forward, clocking up kilometers. Yesterday we swapped the keyboard for running shoes and showed at the WVV company run, hosted by Würzburger Versorgungs- und Verkehrs-GmbH, what we can do outside the digital world too. Thanks to everyone who took part — on the course or along it. #GoTeam

How sound are decisions in construction logistics when conditions change daily? Supply chains, available space, material flows, construction processes … even small changes can have a big effect on schedules, costs and resources. Instead of making assumptions and waiting for the outcome, different scenarios can be run through in advance and well-founded decisions taken. How? With simulation. On 16 June, Marlon Gilfert and Nico Schäfer will share practical insights at the virtual LOGISTIK HEUTE forum “Construction logistics for the future: fast, digital, reliable”. Under the title “Construction logistics rethought” they use concrete use cases to show: ✔️ how simulation is used as a basis for decisions, ✔️ how planning certainty can be increased and ✔️ how construction logistics processes can be made more efficient and more reliable. Drop by 👇 We look forward to the exchange.

What happens when a growing company does not want to lose the connection between its teams? Every four months there is one date at BII GmbH that everyone wants to be at: our town hall. Not a stiff appointment but a genuine coming together, and taking the time deliberately. Colleagues from our different locations meet, exchange notes, ask questions and — above all — understand what we are working on together. Transparency is not a buzzword for us. We share openly which projects are coming up, where we want to go and what challenges lie ahead. That is exactly what builds trust and keeps us closely connected even as a large team. The photos give a small glimpse of that exchange 👇

BIM is standard, but are our processes really there yet? We have the methods and the tools, but we are still struggling with the processes in between. Two days at the DB Personenbahnhöfe conference in Berlin brought that insight up in almost every talk. The discussion around the base model was particularly interesting: incomplete as-built data, contradictory information and missing attributes mean reality rarely looks like textbook BIM. Yet this is exactly where it is decided whether projects work or stall. Simulation is called for, but the groundwork for it is often missing. Looking at how intensively topics such as construction simulation (12-week corridors, for instance) are now being discussed, it is clear where things are heading: away from static plans, toward dynamic, robust bases for decisions. In formats like this conference we mostly see a reality check. Not what is theoretically possible, but where we actually stand. We are curious 💬 How are you experiencing everyday BIM in projects right now?

Digital or entirely analogue? After three intense days at a trade fair that revolves around digital solutions, we are happy to have deliberately taken a different route. In conversations spanning very different perspectives we were able to explore many promising use cases in depth and build real momentum. And almost everywhere the same realisation came up: the complexity in construction projects is there, but a tool to make it genuinely tangible is often missing. Going analogue at #DigitalBAU is not a contradiction but a bridge. Broken down that simply, it becomes clear how sequences hang together, how changes take effect and where risks arise. And suddenly the value of digital simulation is very obvious. Concrete ideas came out of many of those conversations. First use cases were thought through, discussed and developed further right there on the stand. That makes us want more. Thanks to everyone who took the time to talk 💬 We are taking away plenty of interesting impulses and look forward to the next steps. Photo © Messe München GmbH

Next week DigitalBAU opens its doors and asks a central question: how do we finally make construction planning predictable? The fair is one of the most important platforms for digital solutions along the whole construction process chain, bringing together software vendors, planners and contractors. We are there with #dProB showing exactly that: how complex construction processes can be turned into comprehensible, simulated processes. 👉 Live at the stand you can experience how planning becomes a sound basis for decisions. 👉 And if you like, we will go straight into your project and think it through together. 📍 Come by and try it yourself: hall 8, stand 355. And a small teaser: we have prepared something else. During the fair we will reveal more about a small event at one of our partners. #staytuned #digitalBAU

On tunnel projects in particular, complex construction phases, tight time windows and live rail operations all come together. Robust, simulation-supported process planning is a decisive factor for quality and safety here. With #dProB we create the basis to model construction processes realistically, test variants early and make their effects transparent — before they become a challenge on site. In combination with BIM and operational systems, this creates an end-to-end planning and control loop. Many thanks to the Rhomberg Sersa Rail Group for the insights into your digital tools in tunneling. We are glad to be part of this digital toolset and to make demanding tunnel projects more efficient and more predictable together. 🚇