The building and construction industry encompasses several different facets that all work together to create a new edifice. This new edifice can have any number of uses: residential, commercial, industrial or public.
Within the roles of building and construction are several specialties. It is very unlikely that a small, residential building and construction company will have a plumbing contractor and electrical contractor on staff whereas a large commercial building and construction company many have several plumbers and electricians working on various projects.
All building and construction projects begin on a drawing board. An architect will create plans and the customer will approve or request changes as the plans are made. As plans are finalized, the building and construction team will take over and physically build the new edifice. The edifice could be as simple as a small, residential home or a complex office building with several stories.
The first thing the construction team will do is dig a foundation for the new building. Depending on several factors, such as local building codes and requirements, the foundation could be as few as two feet or as many as several feet thick. Concrete is normally used and is reinforced with steel bars and wire.
Plumbing is normally put in next. This "roughing in" phase means the pipes and internal parts of the plumbing will be placed before being covered. Each pipe will represent a general location of a toilet, sink or other plumbing fixture.
A framing team will come in after the concrete and plumbing to build the internal skeleton of the new building. For a home, it may be wooden beams but for a large building, steel girders may be used. As soon as the building is framed, it is time for the electrical team to come in and wire, but not connect, for the electricity in the new building.
Normally, a building inspector will be coming during or immediately after this phase to insure the safety of the wiring and the workmanship of the construction. This is necessary before the building's internal structures can be covered with sheet-rock or the internal wall covering.
After the internal wall covering, the building is almost done. Windows, electrical outlets and lights, flooring and painting is all that will be left and the building will be complete.