Hello Civil Engineering World !!! I am a Civil Engineering Student...

I have assigned a Project of Designing an OFFICE BUILDING using Structural Steel and compare it
with concrete design of the same building in different aspects.
So, I need CAD Working Drawings of an OFFICE BUILDING of (10 to 15) Story and Rectangular in shape.
Please give me some source or send me directly if anyone have.
I have Searched the whole internet but nothing found useful.Anyone in the world to help me.I'll be
great thankful till my death and keep the privacy of the drawings...Thankyou Plz Plz Plz
Email : 21stcenturycivil@gmail.com