<< Click to Display Table of Contents >> Navigation:  Wadiso 6 User Guide > Optimization > Optimization technique and general concepts  > Reducing the number of candidate solutions  > Size test

A size test is employed to reduce the number of candidate solutions. If a certain pipe size combination does not meet the pressure requirements, no pipe size combination will meet the pressure requirements, which has all sizes equal to or less than the pipe sizes of this combination. In order to execute the size test, the program maintains a queue of non-functional pipe size combinations. If a pipe size combination passes the cost test, it will enter the size test, in which the present combination is compared with previous combinations, which have failed the pressure requirement.