That is why I was not sure how accurate my answer was, I do not think I have ever even seen a piece of HO track in person, so I had no clue how thick the ties were... I just used the 5mm you mentioned, not even knowing what is stood for, I just needed that third number for the volume equasion, LOLSubstitute 0.0625" for 0.1969" (1/16" = 0.0625" = depth of track ties) and I came up with 164" +-. But of course this is all theoretical. Not taking into account the angle of repose, individual size of ballast, etc, etc...I could be wrong, I have been before, correct me if I am.
Is'nt that already factored into the amount of content printed on the package though, in this case the 18 cubic inches? I always thought that it was, but I am probably wrong though as usual, LOL :eyes:You guys are forgetting packing density.
Packing density for spheres is something like .75 so you would divide your number by .75 and you'll see it'll go further.