Purpose: Used to select alternate method for fatigue calculations in ASD or LFD projects.
--> Given in girder input
AASHTO permits 10,000 psi to be used for the live load plus impact stress range in the rebars over a pier when determining the number of additional connectors placed at the contraflexure points when the slab is noncomposite over the pier. This number of cycles may be an unconservative value for the stress range, therefore this condition is provided to permit the use of more accurate calculations that may produce more additional connectors at contraflexture points.