Koskisen has started the manufacture of rib slab elements, developed by MetsäWood, under the product name KoskiRipa. Koskisen’s new structural glued wood element product has recently been certified in accordance with the EU’s Construction Products Regulation (CPR) and has been approved under the European Technical Assessment (ETA).
According to Product Manager Janne Inkinen, there is high demand for strong panel elements, such as KoskiRipa. “The demand is solid, and we already have signed agreements for a number of sites. KoskiRipa can be used in all floor elements, and it is also suitable for use as roof elements,” Inkinen explains.
Structural glued rib slab elements are well-known in Finland, but there are only a few manufacturers in addition to Koskisen.
Inkinen explains that, in contrast to conventional wood beam slabs, KoskiRipa allows much longer spans in intermediate floors with no load-bearing intermediate walls, which helps create large open spaces. “Structural glued elements will be popular in the intermediate floors of single-family and two-family homes. For the intermediate floors of wooden blocks of flats, KoskiRipa is undoubtedly the most cost-effective solution,” Inkinen forecasts.
“Structural glued rib elements have an edge over other wooden slabs because they allow longer spans or similar spans with less wood. That is what makes it cost effective. Simply put, you get more with less,” Inkinen elaborates.
KoskiRipa rib slabs can also be supported by the slab alone, which makes the joints between the intermediate floor element and the wall very simple. “This naturally also works in the builder’s favour,” Inkinen adds.
Of Koskisen’s wood construction products, the manufacture of structural glued rib elements is the most closely monitored. “We have to take strength samples from at least one element every single day. As usual, our quality control is top notch,” says Inkinen.
He also adds that the certification process went smoothly: “We were confident to the extent that we were preparing for production and taking orders while still seeking certification.”