Patent ID: 8694288

Claim:
A design assist device which verifies a piping order of a plurality of pipes to be arranged, comprising: a storage unit, an arrangement possible/impossible determination part, and an arrangement possible/impossible display creation part, wherein the storage unit stores therein: a pipe list constituted by an ordered set made up of a plurality of the pipes whose piping order is subjected to verification, and a main-branched pipe relationship database in which a given pipe is made to correspond to none or more main pipes each of which is arranged before the given pipe, and also to none or more branched pipes each of which is arranged after the given pipe, wherein the arrangement possible/impossible determination part: reads the pipe list from the storage unit and determines a pipe in the pipe list as a pipe subjected to determination, searches the given pipe in the main-branched pipe relationship database using identification information on the pipe subjected to determination as a search key, acquires a main pipe and a branched pipe corresponding to the searched given pipe, and identifies positions of the acquired main pipe and branched pipe in the pipe list, and, if there is a branched pipe which is situated in a position before the pipe subjected to determination in the pipe list or if there is a main pipe which is situated in a position after the pipe subjected to determination in the pipe list, determines that arrangement of the pipe subjected to determination is impossible, and, if not, determines that the arrangement of the pipe subjected to determination is possible, and wherein the arrangement possible/impossible display creation part makes a display device display the arrangement possible/impossible of the pipe subjected to determination determined by the arrangement possible/impossible determination part.