trainguy
Structural
- Apr 26, 2002
- 706
To anyone out there (DH?):
In the AAR Manual of Standards and Recommended Practices, Section C Part 2, chapter 7 contains Road Environment Percent Occurrence Spectra (REPOS) for various forces on various freight car types.
In the case of "Twist Moment" REPOS (i.e. Table 7.25), what are the units, because I can't find them anywhere.
Are they kip-ft, kip-in, lb-ft, lb-in? And why does the table heading say maximum LOAD, minimum LOAD? Are these forces or moments?
tg
In the AAR Manual of Standards and Recommended Practices, Section C Part 2, chapter 7 contains Road Environment Percent Occurrence Spectra (REPOS) for various forces on various freight car types.
In the case of "Twist Moment" REPOS (i.e. Table 7.25), what are the units, because I can't find them anywhere.
Are they kip-ft, kip-in, lb-ft, lb-in? And why does the table heading say maximum LOAD, minimum LOAD? Are these forces or moments?
tg