Basic Networks - Construction Project Scheduling and Control - page 40

2. Presentations to high-level staff : CEOs and senior managers are usually not con-
cerned with the progress at the individual activity level. They prefer to have an
overall picture of the project and its main components. Roll-up or summary
bar charts have become a popular option in computer software. The project
activities are grouped (rolled up or summarized) based on a certain attribute,
such as area, responsibility, phase, or the company's work breakdown structure
Instead of looking at hundreds or thousands of activities, a top-level execu-
tive will look at a few bars that provide an overall picture of the progress of
the project.
TIME-SCALED LOGIC DIAGRAMS
Some scheduling software vendors tried to take the advantage of networks (logic,
or relationships) and impose that advantage on bar charts in what some people called
time-scaled logic diagrams (Figure 3.23). The result was more like spaghetti. Depict-
ing all relationships not only complicated bar charts (which eliminates their main
Figure 3.23 Time-scaled logic diagram or bar chart with logic links