Many things have been accomplished by early engineers. The great pyramids in Egypt for example are an engineering marvel still today. The massive structures look simple but they took great skill to construct. The complex ventilation systems and rooms took brilliant engineers to design. The people in that era had very few tools to help them build the pyramids so engineers had to devise a way to lift the ponderous stones and place them where they were needed. Engineering has many applications, and is one of the most widely used and needed professions in the world.
The building of the great pyramids is just one small facet of engineering. Engineering is not one broad profession but is a profession consisting of several specialized branches. Historically, engineering can be divided into four primary disciplines. These are civil, mechanical, chemical, and electrical engineering. Additionally engineering is a cornerstone of nuclear technology, mining, and environmental control. Each of the four primary disciplines has a long and rich history.
Civil engineering is the oldest of the four disciplines. It