Gantt charts
Main article: Gantt chart
A Gantt chart showing three kinds of schedule dependencies (in red) and percent complete indications.
Gantt created many different types of charts.[7] He designed his charts so that foremen or other supervisors could quickly know whether production was on schedule, ahead of schedule, or behind schedule. Modern project management software includes this critical function even now.
Gantt (1903) describes two types of balances:[8] * the "man’s record", which shows what each worker should do and did do, and * the "daily balance of work", which shows the amount of work to be done and the amount that is done.
Gantt gives an example with orders that will require many days to complete. The daily balance has rows for each day and columns for each part or each operation. At the top of each column is the amount needed. The amount entered in the appropriate cell is the number of parts done each day and the cumulative total for that part. Heavy horizontal lines indicate the starting date and the date that the order should be done. According to Gantt, the graphical