Abstract: A computer-implemented system for designing a fire protection and/or piping system comprising a personal computer for loading programs into dynamic memory and storing data on a static memory device, means for providing user input, and program files comprising a process algorithm, traversing algorithm, and tagging algorithm. The process algorithm performs data validation, error checking and error resolution, saves data to a start point inserted by a user, pulls layer details into programming variables, applies processing logic to the system, and comprises a main pipes algorithm and a branch resizing algorithm. The traversing algorithm travels the system and presents objects to the process, main pipes and branch resizing algorithms in a logical order. The tagging algorithm attaches to each pipe in the system a tag with property set data pulled into and displayed in the tag. A method of using the foregoing system to design a fire protection and/or piping system.