Purpose: Sets the sign of the ratio fw/fb for determining curved girder allowable stress.
--> Given in ASD and LFD girder input
A condition used to set the sign of the ratio of lateral bending stress to primary bending stress to be positive. This is the default for the 2003 Curved Girder Specification (see commentary on page 33 of the 2003 Curved Girder Specification). Also see MCMANUS SIGN CONVENTION.