No matter where I work—a home, an office building, or a water treatment plant—I follow a building plan or blueprints to install the piping for water, drainage, waste disposal, and gas systems. I lay out the job on paper and mark and measure areas where the pipes will go. I want to be sure the pipes will fit into the structure without too much waste. Sometimes I cut holes in walls, floors, and ceilings and hang supports to hold the pipe in place. To assemble the plumbing system, I cut and bend the pipe pieces using saws, pipe cutters, and pipe benders. I connect the lengths of pipe with fittings, adhesives, or solder. After the pipes are in place, I install the fixtures and connect the system to the outside gas, water, or sewer lines.