يك نوع رابطه منطقي است كه نشان مي‌دهد، پايان كار فعاليت پس نياز، نمي‌تواند پيش از پايان كار فعاليت پيش‌نياز باشد. همچنین به تعریف also finish-to-start, start-to-finish, start-to-startو logical relationship مراجعه نمایید

A logical relationship in which a successor activity cannot finish until a predecessor activity hasfinished. See also finish-to-start, start-to-finish, start-to-start, and logical relationship