Sixteen mm steel, 12 meters long, a ton, how many roots?
The weight of that one 12m is 12*1.58=18.96kg. 1 tons =1000kg. That's 1 tons: 1000 divided by 18.96, about 52. Hope to help you.
To know how many roots a ton has, you should first know how heavy it is. From the knowledge column of Beijing dried into iron and steel, it is known that 16mm's thread steel is 1.58kg/m heavy.
