”In the Infinity project, our focus is not only on what we report, but on how and what we build.”
Castellums nya omfattande projekt Infinity byggs i Hagastaden i Stockholm, ovanpå Eugeniatunneln. CarlGustav Solutions har fått äran att leverera stommen till denna 14 våningar höga kontorsbyggnad med cirka 20 000 kvm moderna kontors- och gemensamhetsytor. Projektet certifieras enligt Miljöbyggnad Guld, Noll CO₂ och WELL Core, med ett tydligt fokus på hållbarhet och energieffektivitet.
I samband med projektet har vi intervjuat projektledaren Andris Bondars, som delar med sig av insikter om projektets nuläge, utmaningar och hållbarhetsarbete.
Where is the project at the moment, and which key milestones lie ahead?
We are approaching the midpoint of the project and are on track with the agreed schedule. We are not expecting any major challenges, such as adverse weather conditions. The biggest milestone at this stage is to keep the project on schedule and to maintain our GWP target (Global Warming Potential), which we have already reached. Our focus now is to ensure that we continue to meet this target throughout the project.
Infinity is being built on top of the Eugeniatunnel. How does that affect the structural solution and the assembly process?
From a construction perspective, this does not affect our assembly work, which is carried out as usual. The main difference is that the designers must take the tunnel into account when performing their structural calculations. Apart from that, standard calculation methods are used.
What are the biggest challenges at this stage of the project, and how are you working to address them?
One of the biggest challenges in the project was coordinating the design within the agreed schedule. The timeline was very tight, particularly due to the use of ECO 50 concrete. This required up to ten weeks of production time for assembly, compared to the usual four weeks. Despite this, we successfully managed to keep the schedule on track. A second, smaller challenge was achieving the target GWP level.
How does CG Solutions work to meet the requirements of certifications such as Miljöbyggnad Gold, Noll CO₂, and WELL?
Sustainability is built into the way we work. Climate impact, quality, and environmental considerations are fully integrated into the design process, material selection, production, logistics and of course, assembly.
In ECO 50 concrete, a large portion of traditional cement is replaced with alternative binders, such as slag, which reduces CO₂ emissions by up to 50%. In addition, the steel used in the project contains up to 80% recycled material. To achieve these results, the design process carefully considers material choices to ensure they are as environmentally friendly as possible.
Is there anything else you would like to share about the project?
We also use climate-improved concrete for joint fillings in the hollow-core slabs, which further reduces the project’s overall CO₂ footprint. For concrete pumping, we use electric pumps, and most deliveries are carried out using transport solutions with a reduced environmental impact. In the Infinity project, our focus is not only on what we report, but on how and what we build.
