When Karl Hedin planned to expand the sawmill in Krylbo, extra environmental considerations had to be taken into account. The solution was a gigantic pipe bridge from Scanmast. - "This is one of the largest pipe bridges, in this genre, that we have built. The construction is more like a truss bridge," says Andreas Gidlund, former project manager and salesman at Scanmast.
Karl Hedin has invested in one of Europe's fastest adjustment plants. For environmental reasons, Hedin was forced to find a solution where the timber packages would be transported across a ravine, from the sawmill to the other part of the area, where it is loaded onto lorries for further transport to the customer.
- They contacted us for a solution and we managed to help them with a real customised construction," says Andreas Gidlund.
Impressive figures
When he describes the project in detail, the figures are truly impressive:
√ The Scanmast structure is 66 metres long, seven metres wide and has 40 metres between columns.
√ The entire bridge, which is made of galvanised steel, weighs over 50 tonnes.
√ Three masts of model S1100 have been linked together with a beam system, with footbridges on the outside.
√ In the centre is a steel structure with a chain conveyor.
√ Once the structure is in place, it should be able to support timber packages that are 4.2 metres wide, 2.2 metres in diameter and weigh six tonnes.
√ The design must be capable of transporting such a package every five minutes, 24 hours a day, all year round.
Unique truss solution
- This is a completely unique truss solution. Usually a pipe bridge contains wires and pipes.
"This is more of a truss bridge for timber transport," says Andreas Gidlund, adding that the structure is made of galvanised steel, which makes the bridge particularly resistant to corrosion from heavy metals and other extreme stresses.
This was also a project characterised by a lack of steel and advanced construction, which really required special knowledge from Scanmast's employees. The assignment was to be completed in late October/early November.
- We did it on time and it feels extra good to the customer, says Andreas Gidlund in connection with Sweden's largest mobile crane on wheels coming to Krylbo to lift the bridge in place.
