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.
All plywood is sold in full sheets. Plywood sheets are 4' x 8'. Prices are per square foot of coverage 3/4 thick and 5 1/8 face width. These materials must be special ordered or milled, so allow two weeks for delivery. Some material is available in other widths.