Going by the definition of civil engineering, the subject can be defined as the study, design, development and maintenance of the built environment. When we talk about build environments in the context of civil engineering, it involves both the natural environment and build environment.
The main job of a civil engineer is to try and find a balance between these two environments in order to construct manmade structures that make human lives better, easier and more comfortable without hampering the natural ecology of the earth as well as ensuring economic feasibility and catering to the general needs of the human society. Going by the above understanding, civil engineering has a vast scope of applications in addition to the core construction field. Any industry that is involved in the creation of sustainable infrastructure like oil and energy, chemicals, transportation, power, environmental and marine, need the help of civil engineers to create safe build environments.