Work includes but is not limited to providing all necessary labor, materials and equipment for replacing an existing 4 inch gas main line and extending the new main line inside an existing building chase and through the roof, running new gas lines on the building’s roof, abandoning existing gas lines, extending the new gas lines through the roof and into different areas of the building to feed and connect to various existing appliances and equipment, installing new valves, properly patch and seal all roof penetrations, paint new piping to match surrounding wall finish, patch, finish, replace ceiling tiles as necessary and paint to match existing ceiling and all other items of work necessary to complete the work.