janka wood floor hardness scale
The janka hardness scale determines the hardness of a particular type of wood over another. the scale was invented in 1906 by gabriel janka, an austrian wood researcher, and standardized in 1927 by the american society for testing and materials ().depending on the room where the flooring will be installed, a certain level of hardness may make it a more desirable choice.. The industry standard for hardness the hardness of a wood is rated on an industry wide standard known as the janka test. the janka test measures the force required to embed a .444 inch steel ball into the wood by half its diameter. this test is one of the best measures of the ability of a wood specie to withstand denting and wear. it is also a good indicator of how hard a. The janka hardness test was conducted by measuring the amount of force necessary to embed a .444 inch steel ball into side of the wood up to one half of its diameter to determine its hardness rating, which is then recorded on the janka hardness scale. there may be variations of more or less than 20% on the scale, since this is a scientific test..
janka wood floor hardness scale
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