T-TRAK-N Endcap r282
Depicted is a typical T-TRAK-N endcap, also known as a 1801. The module is 365 mm (14.370") by 731.6 mm (28.803"). It is 70 mm (2.75") tall. Per the Interface Guidelines this corner possesses the common track radii.
The track radii for this corner, as depicted, consists of four pieces of r282-45o and four pieces of r315-45o curves. It would be feasible to construct this corner using twelve pieces of r282-15o and twelve pieces of r315-15o curves. Another option would be to use the r282/315 superelevated curves which would consist of one 20184L, three 20183, and one 20184R set of curves.
Click image for a larger picture