I 973 79 2 SECTION 50 See Page 1 f th S t F TRUCK SERIES IOO 500 SIDE RAIL TYPES sm vnzws M STRAIGHT VARIABLE REINE0RcEI CK UP I R0I mn vmws t E B I I B Is I N c c C D A A A c A D D I I TYPE I TYPE 2 TYPE 3 TYPE 6 ISINGLE cI IANNELI SINGLE cI IANNEI WITH SINGLE CHANNEL wma SINGLE CHANNEL WITH INNER REINI 0RcEMENT INvERTE I INNER a OUTER REINE0RcEMENT REINE0RcEMENTs STEEL TYPES mncnu nous IN sm RAIL ron num snucm IDENTIFICATION I I0IsI 2 000Iss PER sca IN 50 000 Iss PER sq IN II0 000 Iss PER sc IN YIELD STRENGTH YIELD STRENGTH YIELD STRENGTH