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Shamim Ahmmed

Difference between Analysis & Design Bending Moment

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Assalamualaikum to all

I analysed a two story  concrete Building in ETABS.
After analysis the positive bending moment is +15.80 kip-ft and Negative B.M is -19.99 kip-ft

when i design the building frame, ETABS calculate less positive B.M +9.99 kip-ft and negative B.M is  -19.99 kip-ft
I can't understand why ETABS calculate less positive bending moment in designing?
Please help me.
Thanks in advance.

Screenshot are given here.
 

Analysis Bending Moment.JPG

Design Bending Moment.JPG

ACI Code.JPG

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