Well engineering is about forming the material world into the service of Man.
There are two main aspects of this.
Firstly deciding what to do or make. This is called design.
The second is to implement the design. That is where construction engineering comes in.
Sometimes the result is newbuild sometimes it is repair or extension of existing.
Either way there are some different ways of thinking to achieve good design or good fabrication.
Here are two examples.
A survey of what is already there is usually part of the design process.
A construction engineer will use a different form of survey to place the parts of the structure in the desired locations.
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A design engineer may choose to specify an arch for construction, because it is a very strong structure capable of supporting enormous loads in addition to its own weight.
The construction engineer will know that, strong as the finished arch is, it is incapable of supporting even its own weight until it is complete. So he will have to design and construct some temporary supports to hold the structure up until it is finished and capable of supporting itself. (This is known as falsework)
There is an equivalent split of function in all engineering; for example in mechanical engineering there are design engineers and production engineers.
