Thank you both (Wiktor and Rod Smith). We did use the table you referenced in your post for the interior girder distribution factor, and decided to use the lever rule for the exterior. This discussion has been very helpful. Thanks again.
Thank you wiktor! In my particular case (bridge load rating with steel corrugated deck), the lever rule produces an acceptable result for exterior moment. But I was surprised to find that the relevant articles regarding moment distribution do not mention the lever rule (only for shear). Is the...
For interior girder shear distribution factors, the lever rule is recommended for structure types not found in table 4.6.2.2.3a-1 (see LRFD section 4.6.2.2.3a). Similarly, for exterior girder shear distribution factors, the lever rule is recommended for cases not addressed in Tables 4.6.2.2.3a-1...
