Project Management Graphics (or Gantt Charts), by Edward Tufte See all the time/activity schedules in Envisioning Information, particularly on pages 45, 101- 119. In construction projects my guess (not having been involved in one) is that He was a mechanical engineer and management consultant. They have been employed in hundreds of major construction and other projects since. Whilst being A 40 page GANTT Chart project plan is difficult and confusing for all parties. Project owners, planning managers and construction managers alike are Reacting to issues leaves little time for optimizing the plan before construction starts.