Dick, you didn't say what scale or what size bin. Both the 30' and the 40' bins, however, have the same 24' diameter. That makes it a 75' circumference. With 6 segments, that makes each segment 12.5' long and 4.4' high. Scaling from a Rix photo gives a 5" band width.
You can convert these dimensions to your desired scale, but for N they are:
diameter 1.8"
segment length .94"
segment height .33"
band 1/32"