Short Angle Projection (SAP) Bonded Insulated Rail Joint

The SAP Joint design increases longitudinal joint strength while reducing epoxy shear stress, reduces noise and vibration, and provides a smooth wheel transition from one rail to the other rail.
June 30, 2016
Koppers, Inc.
Koppers Sap Joint Nt 5775924d6621e
  • Reduces expoxy shear stress, noise and vibration
  • Staggered end post halves connected with a short angle cut rail head profile eliminate wheels traversing the conventional 90° end post gap
  • Eliminates joint shock loads and eventual rail end batter