Minimal bending radius, pulling

The minimal bending radius during cable pulling can be determined from the minimal bending radius factor multiplied with the external diameter of the cable $D_e$.
The minimal bending radius should be larger than the smallest inside bending radius $r_{arc}$ along the cable route.

Symbol
$r_{mbp}$
Unit
m
Formulas
$\frac{r_{mbpf} D_e}{1000}$