Introduction
How is possible to build great structures without a lot of math? Even when I'm an engineer student and I love mathematics, mankind has build magnificent structures all over the world without a lot of calculations. Creativity was and still being our greatest tool for solve problems. Those have been some of the homeworks that I did for my structures course at EDX from the University Carlos III from Madrid. Thanks to the Internet now we have access to great quantities of knowledge. I have always said it: Knowledge is power!