If self weight is is included automatically, the program creates a special 0'th load combination with self-weight only, and shows shear and bending results for that load combination in the analysis results.
Before a member has been completed specified in Beam View or by selecting a Suggested Section, the Analysis Results show values for this combination due to an arbitrary weight of 1 N/mm (68.5 plf), and do not include the self-weight stresses in the analysis graphs or tables for other load combinations.
When a member is selected , the self-weight is included in the graphs and tables for other load combinations.
Values reported in the Design Check output always reflect the true self weight. Automatically generated self-weight appears as a load in the design results output in the list of input loads.