1 Algorithm based on impact on opinions over time - and Wikipedia. 2  Top ten most significant in history puts Jesus in the number one spot.  The list also includes Muhammad, Lincoln, Hitler and Shakespeare.
Plies vary in thickness from 1.4 mm to 4.3 mm. The number of plies depends on the thickness and grade of the sheet but at least three are required as the minimum odd number of plies. Roofing can use the thinner 5/8 (15 mm) plywood.
What is the weight of plywood that measures 4 foot by 8 foot and 1/2-inch thick? OSB is manufactured using rectangular wood strands arranged in cross-oriented layers. Plywood is made using thin sheets of veneer that are glued together, with each layer positioned perpendicular to the adjacent layer. The manufacturing process gives OSB a uniform quality that has fewer soft spots than plywood, although both materials are manufactured according to the same performance standards.