After the user completes the required information and then clicks the CALCULATE button, the application displays the minimum volume of the upper (above the building) and lower (floor) reservoir, and the minimum commercial diameter of the discharge pipe (piping leading water to the upper reservoir).
     It also has the LANGUAGE button which allows the user to choose to use it in Spanish, Portuguese or English.
     It was developed by Carlos Alberto P. de Queiroz and its intellectual mentor was Professor José Edson Martins, both civil servants of IFRN.