It is Plies.
Commercial ply is stronger than normal ply. Waterproofed ply is waterproofed and commercial ply is stronger but not necessarily waterproof.
Ply Board is a Board made out of Ply
Yes. A ply is a layer so 2 ply is double as strong as 1 ply
The load range indicates the ply rating of the tire or the number of plys under the tread. A = 2 ply B = 4 ply C = 6 ply D = 8 ply E = 10 ply F = 12 ply G = 14 ply H = 16 ply J = 18 ply L = 20 ply M = 22 ply N = 24 ply This has a direct relation to the Load Index which tells you the weight the tire can carry. The more plys the more weight the tire can carry.
it depends on the ply. such as two ply or one ply.
the plural of ply is plies. As in "she plies the drink on him".
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Whitesmith!