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2. Janka hardness test - Wikipedia

   en.wikipedia.org/wiki/Janka_hardness_test

   For hardwood flooring, the test usually requires an 80 mm × 150 mm (3 in × 6 in) sample with a thickness of at least 6–8 mm, and the most commonly used test is the ASTM D1037. When testing wood in lumber form, the Janka test is always carried out on wood from the tree trunk (known as the heartwood), and the standard sample (according to ...

3. Floor slip resistance testing - Wikipedia

   en.wikipedia.org/wiki/Floor_slip_resistance_testing

   It was validated for pedestrian traction in 1971, together with its safety standards, in the UK over a period of 25 years by 3500 real-world public walking area tests and site accident records. [9] [10] The test is an ASTM standard (ASTM E303-22), which in 2022 was updated to describe testing for floors, as well as skid resistance testing for ...

4. Wood flooring - Wikipedia

   en.wikipedia.org/wiki/Wood_flooring

   All-timber-wood floors made from multiple layers of sawn wood. Most engineered wood flooring is in this category, and does not use rotary-peeled veneer, composite wood (such as HDF), or plastic in their construction. Veneer floors use a thin layer of wood over a core that is commonly a composite wood product.

5. Laminate flooring - Wikipedia

   en.wikipedia.org/wiki/Laminate_flooring

   This is an accepted version of this page This is the latest accepted revision, reviewed on 8 December 2024. Type of manufactured floor covering This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Laminate flooring" – news · newspapers · books ...

6. History of radiation protection - Wikipedia

   en.wikipedia.org/wiki/History_of_radiation...

   Unprotected experiments in the U.S. in 1896 with an early X-ray tube (Crookes tube), when the dangers of radiation were largely unknown.[1]The history of radiation protection begins at the turn of the 19th and 20th centuries with the realization that ionizing radiation from natural and artificial sources can have harmful effects on living organisms.

7. MasterCraft - Wikipedia

   en.wikipedia.org/wiki/MasterCraft

   The MasterCraft Boat Company is an American manufacturer of luxury high-performance boats. The company was founded in 1968 in Maryville, Tennessee, and is currently headquartered in Vonore, Tennessee. [1] MasterCraft boats are used in waterskiing, wakeboarding and wake surfing. The company has also produced several boats that are not focused on ...