sap2000 simple symmetrical building sdb file. but reinforcement is not symmetrical ?

[sagunconsult]

I have attached a simple building sdb file. as my building is symmetrical and load are also symmetrical about y-axis i was supposed to get equal reinforcement in both lines of grid but results are some little different. Please anybody take interest in this matter? any suggestion will be appreciated. Here attached sdb and bmp image as well.

 

[sagunconsult]

additional information:
load combination as per Nepal Building Code
EQx and EQy User defined coeff.
slab and beam meshed
diaphragm defined etc.