Janka hardness test understand which woods are harder than others. Janka hardness test The Janka hardness test (from the Austrian-born emigrant Gabriel Janka, 1864-1932) measures the resistance of a sample of wood to denting and wear. It measures the force required to embed an diameter steel ball halfway into a sample of wood. A common use of Janka hardness ratings is to determine whether a species is suitable for use as flooring. The hardness of wood varies with the direction of the wood grain. Testing on the surface of a plank, perpendicular to the grain, is said to be of "side hardness". Testing
Carlo Janka won the gold medal in giant slalom and the bronze in downhill at the 2009 World Championships in Val d'Isère. On the weekend of 4–6 December, 2009, Janka achieved a remarkable feat by winning the super-combined, downhill, and giant slalom on the challenging "Birds of Prey" course at Beaver Creek, Colorado. Janka was the first skier to win three World Cup races in a single weekend since Hermann Maier at the same location ten years earlier on the 2000 World Cup tour. On the same weekend as Janka triumphed in Beaver Creek, Lindsey Vonn almost duplicated the feat on the