Construction World February 2022

CRANAGE & HEAVY LIFTING

design software Revit helped visualise the challenging tunnel geometries down to the smallest detail, especially the formwork constructions. When different countries are involved, data and sketches help everyone understand what's going on. And participation means understanding. BIM is a digital bonfire at which project partners warm up every day for their tasks and discuss all manner of issues surrounding the tunnel construction. “The BIM model was great and helped us to plan the works before execution since it gave us a unique possibility to see how everything will look in reality. This is very helpful when it comes to production and crane planning. When you combine the knowledge from a professional formwork supplier like Doka, an experienced subcontractor and our expertise the result becomes great,” says Martin Klimt, Blockmanager for concrete/formwork at Comsa. Six construction sections, one big goal Why, for example, a particular load-bearing tower or large- area formwork is used, or why fewer system parts are sometimes more. Every tunnel is different, at most similar only to itself. This means that experience does not mean resting on one’s laurels, but is part of a continuous learning process. Because there is always something new you can learn, a goal you can strive for. And this is how projects like the one in Sweden come into being; the country's first circular road tunnels in open-cut construction are now taking off around Stockholm; on top of that, it’s another first for the Swedish Doka team, projected in BIM. As things stand, the six sections involving Doka will be handed over to the client on time and within budget after roughly five years of planning and construction. When the junctions between Kungens kurva in the south and Häggvik in the north are approved for traffic, as is due to happen from 2025, the Stockholm Bypass will be one of the three longest road tunnels in the world. And Stockholm will continue to be one of the best places to live. 

three spares of each of the parts, their use is timed so that the construction company can manage with less material without experiencing shortages. Or safety: Here, the Edge protection system XP was chosen. "It is user-friendly and can be used universally for all edge pro¬tection needs," explains Lukas Palme, Group Leader Engineering, Doka Sweden. An invaluable benefit, especially since the Swedish Doka branch has been entrusted with several construction sections. As well as the two circular tunnels, including entrances and exits, the work includes two 20-metre-long routes in rocky terrain as well as a pair of trough structures, the expansion of existing infrastructure and numerous stabilisation measures along the route. A matter of form As well as identifying the perfect solution and getting the most out of it, at least one more question is on the minds of the formwork specialists: How to position the system to make pouring concrete a piece of cake. And how Sweden's first round road tunnel is not just a matter of form. At Doka, it’s always about combining functions and innovations. About a modular system that does not only generate hardware solutions but other solutions as well. In Skärholmen the team has once again demonstrated how valuable an all-round service that is firmly embedded in Doka’s value system can be. BIM as a ‘digital campfire’ Cue BIM: “We surprised Comsa with a 3D model on our initiative,” explains Jan Radlbauer, Head of Engineering Europe. Since the more complex the geometry, the more important it is to fully map the building space. Doka also drew the underlying model so that the customer could visualise it. The benefits are clear. All employees are connected via their mobile devices and therefore are always up-to-date when construction data changes or an update is available. Problems are evaluated more quickly and errors rectified more easily than if everyone had to be individually briefed on the vast construction site. BIM 360 and the

FORKLIFT PERIMETER LIGHTS IMPROVEWAREHOUSE SAFETY

A t their busiest, warehouses can become sites of accidents or injuries if employees are not constantly vigilant or don’t have the right tools to do their jobs. Even the best warehouse optimisation tools cannot make up for human error caused by a lack of concentration. With this in mind, 600SA Holdings, a division of materials handling and industrial equipment group of companies, EIE Group, has introduced safety perimeter lights as a standard feature on all their CT Power electric forklifts. 600SA’s, Inland Sales Manager, Sonia Pretorius, says safety is paramount for all 600SA-associated products. “In addition to urging our customers to provide training for their forklift drivers, we have now

forklift at any given time. “Considering the tight spaces that forklifts and people negotiate in warehouses and the overall focus on safety, it is surprising that CT Power is the only forklift distributor that offers these types of lights as a standard feature.” She says the safer a work environment is, the more productive employees are. “In fact, a 2017 Harvard study indicated that safety in the workplace made employees feel more engaged and increased productivity by 12%.” “Not only do safety measures make people feel better about where they work, it also results in less downtime due to the reduction of accidents and injuries. This leads to greater efficiency and productivity – a win-win situation for everyone.” 

ensured that our CT Power forklifts are the most visible machines in any distribution centre, reducing pedestrian injuries and possible disabilities by up to 40%.” Red laser lights are projected onto the warehouse floor from the sides of the forklift, creating a highly visible red, one-metre perimeter or ‘barrier’ around the forklift. This allows warehouse employees to see the equipment from any angle. In addition, another blue laser light projects two metres onto the floor from the back of the forklift, creating an early warning signal for anyone is close proximity to the machine when it reverses. Pretorius says the lights are an ingenious way of alerting warehouse employees to the whereabouts of the

30 CONSTRUCTION WORLD FEBRUARY 2022