A simplified method for determining flame spread

The author discusses a small-scale fire test, which he proposes be used to determine flame-spread ratings for plastics during the development stages. Data on certain cellulosic materials indicate good correlation with the 25-ft tunnel test. Note: Based on a paper delivered by the author at the 22nd Annual Technical Conference of the Society of Plastics Engineers, March 12, 1966. At the time of the paper’s presentation, Mr. Levy was employed by the Pittsburgh Corning Corporation. He is currently with the Pittsburgh Plate Glass Company.