Civil engineering update

What caused this column to break

This is my hand work,if you see this post not just pass without having an error on this very plan, get your error and drop it in the comments section thank you.

Please and please my engineers,
I need you people help I'm lacking so many things

He who need advices or ideas from people, they are always discovered themselves in the right direction or position.
The essence of me create this page, I'm a technologist in civil engineering technology, that's what makes me to create the page, because I need ideas and strategies use to carry appropriate work from engineers or people.

New construction