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.
1 The Materials-the average sheet of roofing quality plywood that measures 5/8 thickness is roughly $20. 2  For this project it is going to require around 40 sheets for a cost of $800. The Materials-the average sheet of roofing quality plywood that measures 5/8 thickness is roughly $20. 2  For this project it is going to require around 40 sheets for a cost of $800.