The following is an approximate formula for determining the diameter of a roll of fabric. The formula generally underestimates roll diameter for fabrics with texture or some specialty yarns. Also, actual diameters can vary at different take-up tensions.
The following chart gives the general direction of changes in certain fabric characteristics when the construction is altered. These relationships may not always apply; however, the magnitude of the change would be negligible.
+ = increase, – = decrease, 0 = no change
1 = lowest cost, 1 = least thick, 1 = lightest, 1 = weakest, 1 = closed
7 = highest cost, 7 = thickest, 7 = heaviest, 7 = strongest, 7 = open