Installed a new wet pipe sprinkler system in a commercial building. First, I mounted the riser assembly, including a 6-inch backflow preventer and flow switch. I then ran Schedule 40 black steel piping throughout the building, ensuring proper spacing of sprinkler heads per NFPA 13 guidelines. Each sprinkler head was positioned for optimal coverage in high-risk areas, including storage rooms and hallways. After installation, I pressurized the system and tested it for leaks. The fire alarm control panel was integrated with the system to monitor for any sprinkler activations, ensuring full operational readiness.