We identify confusion in the literature about the definition and calculation of repetitive member factors. This confusion casts some doubt on the validity of the 1.15 repetitive member factor permitted in ASTM D 245 and ASTM D 1990.
Verrill, Steve; Kretschmann, David. 2010. Repetitive member factors for the allowable properties of wood products. Research Paper FPL-RP-657. Madison, WI: U.S. Dept. of Agriculture, Forest Service, Forest Products Laboratory. 38 p.