PRESSURE LOSS DETERMINATION DEVICE, COMPUTER READABLE MEDIUM, AND PRESSURE LOSS DETERMINATION METHOD

A pressure loss determination device (1) is equipped with a route trace unit (30), a piping information management unit (50) and a loss determination unit (40). The route trace unit (30) extracts a plane whereon a pipe is to be arranged from three-dimensional building information, divides the plane into meshes, to be divided into a plurality of cells, and sets a starting point cell being a starting point of the pipe, and an end point cell being an end point of the pipe. The piping information management unit (50) stores loss information (51) indicating a pressure loss value of a fluid between cells. The loss determination unit (40) searches for a plurality of piping routes formed by a connection between cells from the starting point cell to the end point cell, and determines a pressure loss value from the starting point cell to the end point cell with respect to respective piping routes of the plurality of piping routes, using the loss information (51).