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.
chapter 4. PLYWOOD PANEL SIDING. 4.1 PLYWOOD PANELS. 4.1.1 Construction. Plywood panels are made up of an uneven. number of layers or plys. Depending upon. the type of panel, these plys can vary in. thickness fiom a few hundredths of an inch. for fine hardwood face veneers to 1/4 inch. or so for the inner plys of some sheets of.