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.
This is the most common plywood product, made of softwood veneer, usually fir. The layers are stacked at a right angle to each other and glued together with resinous glues. Softwood plywood usually comes in 4â x 8â sheets, although 5â x 5â sheets are also available.