Comments on the working documents submitted for the 80th session of GRRF

The deadline for the submission was at the 19th of June 2015.

The first document submitted was R55-10-02 about redefinition of Class S. The secretary commented that a small change was made in relation to the agreement at the 9th meeting of the working group. That was to include the class W that most likely will be approved during the 80th session of GRRF. This document was accepted by the working group without any changes.

The second document submitted was document R55-10-10. Concerning the proposal number 3 within the document R55-10-10 the working group had some comments on the distinction between hinged and rigid drawbars. This is not clear in the table 4. Hence the table was changed such that the row in the table that concerns drawbars was split into two rows. There is one for rigid drawbars and one for hinged drawbars. Furthermore a new column was added to handle the characteristic value Av. Through these changes the footnote to table 4 becomes obsolete. Hence it is removed. The changes are documented in the document R55-10-17. Furthermore it was observed in the fourth proposal within the working document that the definition of class W was unnecessary restricted to clevis type couplings. It shall be applicable to drawbar couplings in general. Hence the words “clevis type” were stricken out. This change was also documented in the document R55-10-17.